System description

1096-EX-ST-2014 Text Documents

Raytheon Integrated Defense Systems

2014-12-04ELS_156497

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                                                     TransCore

                                               Application
                                             For Certification
                                         RF Module, Model IT2611

                                               FCC ID: FIH2611SS

                                                   March 11, 2002
                                                    Revision 3




All services undertaken are subject to the following general policy: Reports are submitted for exclusive use of the client to whom they are
addressed. Their significance is subject to the adequacy and representative character of the samples and to the comprehensiveness of the
tests, examinations or surveys made. No quotations from reports or use of Intertek Testing Services name is permitted except as expressly
authorized by Intertek Testing Services in writing. The report must not be used by the client to claim product endorsement by NVLAP or
any agency of the U.S. Government. The NVLAP logo is applicable for testing to I EC/CISPR 22:1993 and FCC-47 CFR part 15 only.


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                                               TABLE OF CONTENTS

1.0   General Description...............................................................................................................1
      1.1    Related Submittal(s) Grants..........................................................................................1
      1.2    Product Description.....................................................................................................1
      1.3    Test Methodology .......................................................................................................2
      1.4    Test Facility................................................................................................................2

2.0   System Test Configuration ....................................................................................................3
      2.1    Justification.................................................................................................................3
      2.2    EUT Exercising Software.............................................................................................3
      2.3    Special Accessories......................................................................................................3
      2.4    Equipment Modification...............................................................................................3
      2.5    Support Equipment List and Description........................................................................3
      2.6    Test Configuration Block Diagram ................................................................................4

3.0   Test Results ...........................................................................................................................5
      3.1    RF Power Output........................................................................................................6
      3.2    Occupied Bandwidth ................................................................................................. 17
      3.3    Spurious Emissions at Antenna Terminal..................................................................... 28
      3.4    Out of Band Spurious Emissions at Antenna Terminal.................................................. 30
      3.5    Field Strength of Spurious Emissions........................................................................... 38
      3.6    Frequency Stability.................................................................................................... 41
      3.7    Field Strength Calculation........................................................................................... 48

4.0   Test Equipment ................................................................................................................... 44

      EXHIBIT I
      Test Set Up Photographs ....................................................................................................... 45

      EXHIBIT II
      FCC ID Label Location ......................................................................................................... 50

      EXHIBIT III
      External Photographs............................................................................................................. 51

      EXHIBIT IV
      Internal Photographs.............................................................................................................. 54

      EXHIBIT V
      Electrical Schematics and Block Diagram ................................................................................ 62

      EXHIBIT VI
      User Manual and Operational Description................................................................................ 63


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1.0     GENERAL DESCRIPTION


1.1     Related Submittals Grants

This is single application of the IT2611RF Module for Certification under FCC Part 90, Subpart M.
There are no other simultaneous applications.


1.2     Product Description

Purpose of the IT2611 RF Module

The IT2611 RF Module is a part of the non-multiratelation Location and Monitoring Service (LMS)
System. The IT2611 RF Module is mounted with antennas. The intended use of the IT2611 RF Module
unit is to generate a RF signal upon command from a reader, and deliver the signal to one of the antennas
for transmission and receive the reflected modulated tag signal returned through the antenna(s). Then
IT2611 RF Module demodulates, amplifies, and filters the received tag signal, and forwards the digital data
to the reader for processing. The IT2611 RF Module powered at 120VAC/60Hz through the external power
adapter manufactured by TransCore.


The IT2611 RF Module Transmitter

The IT2611 RF Module Transmitter operates in frequency ranges with type of modulation:

Uplink Mode (CW only):
From 902.25 to 903.75MHz (Continuous Wave, N0N Emission Modulation Designator) and
From 910.00 to 921.75MHz (Continuous Wave, N0N Emission Modulation Designator),
adjustable in 0.25MHz step.

Down link Mode (Digital modulation only):
From 912.75 to 918.75MHz (Manchester encode 300kbps Modulated Signal, L1D Emission Modulation
Designator), adjustable in 0.25MHz step.


Operating Power Level:

1 Watt maximum (30dBm) and may be attenuated up to 15dB with 1dB step




FCC ID: FIH2611SS               Report No:3011655 Rev. 3 – March, 2002                       Page 1 of 63


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The IT2611 RF Module Antennas

Two different antennas could be used to transmit RF signal from the IT2611 RF Module:

AA3152 Universal Toll Antenna (UTA)

Frequency range: 902 to 928MHz
Gain: 13dBi
Impedance: 50Ohms


AA3153 Toll Antenna

Frequency range: 902 to 928MHz
Gain: 10.5dBi
Impedance: 50Ohms


The IT2611 RF Module Receiver

The IT2611 RF Module Receiver is a three-channel differential receiver with pre-amplifier. The power at the
receiving antenna terminal is not exceed 2.0 nanowatts.


1.3     Test Methodology

Emission measurements were performed according to the procedures in specified by ANSI/TIA/EIA-603-1992.
All field strength radiated emissions measurements were performed in the semi-anechoic chamber using a
substitution antenna method. All field strength radiated tests were performed at an antenna to EUT distance
of 3 meters, unless stated otherwise in the "Justification Section" of this Application.


1.4     Test Facility

The test site facility used to collect the radiated and conducted measurement data is located at 7250 Hudson
Blvd., Suite 100, Oakdale, Minnesota. This test facility has been fully described in a report dated on January
2000 submitted to your office. Please reference the site registration number: 90706, dated May 19, 2000.




FCC ID: FIH2611SS              Report No:3011655 Rev. 3 – March, 2002                       Page 2 of 63


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2.0     SYSTEM TEST CONFIGURATION

2.1     Justification

FCC Part 90.210(k)(4) specifies measurements at LMS Sub-Band edges FCC Part 90.210(k)(6) for a non-
multilateration transmitter using 100kHz RBW. However, based on the rules interpretations provided by
TransCore in reference to the FCC Letter dated on June 9, 1997 (uploaded with application) measurements of
the Out-of-Band emissions with center frequencies within 1MHz from the band edges were taken using 300Hz
RBW (See Section 3.4).


2.2     EUT Exercising Software

The IT2611 RF Module was tested in the continuous transmission mode.


2.3     Special Accessories

There are no special accessories necessary for compliance of these products.


2.4     Equipment Modification

No modifications were installed during the testing.


2.5     Support Equipment List and Description

BSI Computer, s/n BSI1023175
Data Interface unit manufactured by TransCore
1611A BK Precision DC Power Supply, s/n 241-00988




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2.6    Test Configuration Block Diagrams

The EUT was powered at 120VAC/60Hz through external power supply unit. The EUT was set up as tabletop
equipment.




Measurements at Antenna Terminal




Field Strength Measurements




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3.0     TEST RESULTS

Data is included of the worst case configuration (the configuration which resulted in the highest emission levels).
 A sample calculation, configuration photographs, data tables and graphical representations of the emissions are
included.

The EUT is intended for operation under the requirements of Part 90 (Subpart I and M), Part 15 (Subpart B).
Specific test requirements include the following:

        47 CFR 90.205(j), 2.1046                  RF Power Output
        47 CFR 90.209(b)(5), 2.1049               Occupied Bandwidth
        47 CFR 90.210(k)(3)(ii), 2.1051           Spurious Emissions at Antenna Terminal
        47 CFR 90.210(k)(3)(ii), 2.1051           Out of Band Spurious Emissions at Antenna Terminals
        47 CFR 90.210(k)(3)(ii), 2.1053           Field Strength of Spurious Radiation
        47 CFR 90.213(a), 2.1055                  Frequency Stability


The EUT does not re-modulate or re-key the signal. Based on the lack of re-keying/re-modulation circuitry, the
following test was not performed:

        47 CFR 90.211, 2.1047 RF                  Modulation Characteristics




FCC ID: FIH2611SS                Report No:3011655 Rev. 3 – March, 2002                         Page 5 of 63


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3.1    RF Power Output, FCC 90.205(j), 2.1046

RF Output measurements were made in the start, center, and end frequency of each frequency range with
appropriate type of modulation for these frequency ranges. The follow frequency ranges are used in the
EUT:

Uplink Mode:
From 902.25 to 903.75MHz (Continuous Wave Emission Designator)
From 910.00 to 921.75MHz (Continuous Wave Emission Designator),

Downlink Mode
From 912.75 to 918.75MHz (Modulated Signal Emission Designator, digital modulation, 300kbps,
Manchester code).

So, RF Output measurements were made for frequencies:
902.25MHz, CW
903.00MHz, CW
903.75MHz, CW
910.00MHz, CW
915.75MHz, CW
921.50MHz, CW
912.75MHz, Modulated
915.75MHz, Modulated
918.75MHz, Modulated

Test Procedure

The RF Power Output for the device was measured at the maximum power transmission condition. The
transmitter antenna port was connected to the Spectrum analyzer via the attenuator.

Total Power was calculated from Measured Power adding 6.2dB factor of the external-of-analyzer
attenuator.

Maximum Output Power at Antenna Terminal calculation
According to the FCC 90.205(j), the maximum ERP output power is 30 Watts (44.77dBm).
Maximum output power at antenna terminal = Max ERP Power – Antenna Gain = 44.77dBm – 13dBi
Maximum output power at antenna terminal = 31.77dBm
According to the client specification, the maximum output power at antenna terminal is 1 Watt, or 30dBm.
As a worse case, 30dBm output power at antenna terminal is chosen as a reference level of the Maximum
Output Power at antenna terminal.

Table and graphs below show the RF Power Output at antenna terminal.
Note: Emission level shown in the Graphs does not include 6.2dB attenuation factor of the attenuator.




FCC ID: FIH2611SS              Report No:3011655 Rev. 3 – March, 2002                     Page 6 of 63


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 RF Power Output                 Date:        01-03-2002
 Company:                        TransCore
 Model:                          IT2611
 Test Engineer:                  Norman Shpilsher
 Special Config. Info:           The EUT antenna terminal was connected to the Spectrum
                                 Analyzer through the attenuator 6.2dB (including cable loss).
 Standard:                       FCC Part 90.205(j) and Part 2.1046

                                              Table # 3-1-1

      Output        Measured        Total          Total        Maximum      Margin
      Freq.          Power          Power          Power         Power                   Comments
      MHz            dBmV           dBmV            dBm           dBm          dB
  902.25 (CW)        129.8          136.0           29.0              30.0    -1.0
  903.00 (CW)        129.4          135.6           28.6              30.0    -1.4
  903.75 (CW)        129.7          135.9           28.9              30.0    -1.2

  910.00 (CW)        129.7          135.9           28.9              30.0    -1.1
  915.75 (CW)        130.2          136.4           29.4              30.0    -0.6
  921.50 (CW)        130.3          136.5           29.5              30.0    -0.5

  912.75 (Mod)       129.6          135.8           28.8              30.0    -1.2
  915.75 (Mod)       129.5          135.7           28.7              30.0    -1.3
  918.75 (Mod)       129.7          135.9           28.9              30.0    -1.1




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                                   Graph # 3-1-1




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                                   Graph # 3-1-2




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                                   Graph # 3-1-3




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                                   Graph # 3-1-4




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                                   Graph # 3-1-5




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                                   Graph # 3-1-6




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                                   Graph # 3-1-7




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                                   Graph # 3-1-8




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                                   Graph # 3-1-9




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3.2    Occupied Bandwidth, FCC 90.209(b)(5), 2.1049

Occupied Bandwidth measurements were made for frequencies 902.25MHz, 903.0MHz, 903.75MHz,
910.0MHz, 915.75MHz, and 921.5MHz with unmodulated signal (CW) and for frequencies 912.75MHz,
915.75MHz, and 918.75MHz with modulated RF signal.

Test Procedure

The Occupied Bandwidth for the device was measured at the maximum power transmission condition. The
transmitter antenna port was connected to the Spectrum analyzer via the attenuator. The Occupied
Bandwidth was measured based on the analyzer 99% power measurement option.

The measured Occupied Bandwidth was compared with the maximum allowed bandwidth of 2MHz in
frequency range from 902 to 904MHz and 12MHz in frequency range 909.75 to 921.75MHz according to
FCC 90.209(b)(5).

Table and graphs below show the Occupied Bandwidth test result.
Note: Emission level shown in the Graphs does not include 6.2dB attenuation factor of the attenuator.

According to FCC 2.202 and type of modulation, the Necessary Bandwidth was determined from the
Occupied Bandwidth measurements (See Table # 3-2-1).

The Necessary Bandwidth is:

850Hz - for unmodulated signal (240KN0N Emissions Designator)

1.025MHz – for modulated signal (1M03L1D Emissions Designator)




FCC ID: FIH2611SS              Report No:3011655 Rev. 3 – March, 2002                    Page 17 of 63


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      Occupied Bandwidth          Date:                        01-03-2002
      Company:                    TransCore
      Model:                      IT2611
      Test Engineer:              Norman Shpilsher
      Special Config. Info:       The EUT antenna terminal was connected to the Spectrum
                                  Analyzer through the attenuator 6.2dB (including cable loss).
      Standard:                   FCC Part 90.209(b)(5) and Part 2.1049

                                        Table # 3-2-1


                  Output           Measured Bandwidth               Maximum
                  Freq.               with 99% Power                Bandwidth            Test Result
                  MHz                         kHz                      MHz
           902.25 (CW)                         0.80                     2.0                 Pass
           903.00 (CW)                         0.85                     2.0                 Pass
           903.75 (CW)                         0.85                     2.0                 Pass
           910.00 (CW)                         0.85                    12.0                 Pass
           915.75 (CW)                         0.85                    12.0                 Pass
           921.50 (CW)                         0.85                    12.0                 Pass
           912.75 (Mod)                       1020                     12.0                 Pass
           915.75 (Mod)                       1010                     12.0                 Pass
           918.75 (Mod)                       1025                     12.0                 Pass




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                                   Graph # 3-2-1




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                                   Graph # 3-2-2




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                                   Graph # 3-2-3




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                                   Graph # 3-2-4




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                                   Graph # 3-2-5




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                                   Graph # 3-2-6




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                                   Graph # 3-2-7




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                                   Graph # 3-2-8




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                                   Graph # 3-2-9




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3.3    Spurious Emissions at Antenna Terminal, FCC 90.210(k)(3)(ii), 2.1051

Spurious Emissions at antenna terminal was measured in frequency range up to 10 GHz (10th harmonic).

Test Procedure

The Spurious Emissions at Antenna Terminal for the device was measured at the maximum power
transmission condition. The transmitter antenna port was connected to the Spectrum analyzer via the
attenuator.

Total Emissions level was calculated from Measured Power adding 6.2dB of the external-of-analyzer
attenuator.

The Minimum Emission Attenuation calculation
The minimum emissions attenuation was calculated using the maximum output power P (Watt):
Minimum Attenuation = 55 + 10log (P)
The maximum measured output power in Section 3.1 is 29.5dBm, or 0.891 Watt
According to the client specification, the maximum output power at antenna terminal is 1 Watt, or 30dBm.
As a worse case, the Minimum Attenuation based on 1Watt maximum output power is chosen as a
reference level:
Minimum Attenuation = 55 + 10log (P) = 55 + 10log(1Watt) = 55dB

No spurious or harmonics emissions were observed at antenna terminal in frequency range up to 10GHz
(10th harmonic).

Graph below shows the spurious emissions at antenna terminal.
Note: Emission level shown in the Graphs does not include 6.2dB attenuation factor of the attenuator.




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                                                                   Graph # 3-3-1



                                                        Radiated Emissions at Antenna Terminal, FCC 90.210(k)
                          Job # - 3011655
                          Serial # -                                                                                            Line_1
                                                                 Peak @ 915.75MHz = 130.5dBuV
                                                        Resolution Bandwidth 100kHz, Video Bandwidth 100kHz                     Line_1_t12
                          Model Number - IT2611
                                                                                                                                FCC90.201k3
                          Company - TransCore
                                                              Minimum attenuation 55dB (Line at 75.5dBuV)
                            140.0

                            130.0

                            120.0

                            110.0
         Amplitude dBuV




                            100.0

                             90.0

                             80.0

                             70.0

                             60.0

                             50.0

                             40.0
                               100.0M                                                   1.0G                                             10.0G
                                                                                      Frequency



      Operator: Norman Shpilsher




FCC ID: FIH2611SS                                 Report No:3011655 Rev. 3 – March, 2002                        Page 29 of 63


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3.4    Out of Band Spurious Emissions at Antenna Terminal, FCC 90.210(k)(3)(ii), 2.1051

Out-of-band measurements were made for frequencies:
- 902MHz
- 904MHz
- 909.5MHz
- 921.75MHz.

Output frequencies of the EUT was set to:
- 902.25MHz (CW)
- 903.75MHz (CW)
- 910.00MHz (CW)
- 921.50MHz (CW)
- 912.75MHz (Modulated RF)
- 918.75MHz (Modulated RF)

Test Procedure

The Spurious Emissions at Antenna Terminal for the device was measured at the maximum power
transmission condition. The transmitter antenna port was connected to the Spectrum analyzer via the
attenuator.

Total Emissions level was calculated from Measured Power adding 6.2dB of the external-of-analyzer
attenuator.

The Minimum Emission Attenuation calculation
The minimum emissions attenuation was calculated using the maximum output power P (Watt):
Minimum Attenuation = 55 + 10log (P)
The maximum measured output power in Section 3.1 is 29.5dBm, or 0.891 Watt
According to the client specification, the maximum output power at antenna terminal is 1 Watt, or 30dBm.
As a worse case, the Minimum Attenuation based on 1Watt maximum output power is chosen as a
reference level:
Minimum Attenuation = 55 + 10log (P) = 55 + 10log(1Watt) = 55dB

Measurements were taken using 100kHz Resolution Bandwidth (RBW) of the Analyzer, for frequencies
within 1MHz of the Bandedge 300Hz RBW was used.

Table and graphs below show the out-of-band spurious emissions at antenna terminal
Note: Emission level shown in the Graphs does not include 6.2dB attenuation factor of the attenuator.




FCC ID: FIH2611SS              Report No:3011655 Rev. 3 – March, 2002                    Page 30 of 63


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 Out-of-band Spurious    Emissions at Antenna Terminal                    Date:       01-14-2001
 Company:                TransCore
 Model:                  IT2611
 Test Engineer:          Norman Shpilsher
 Special Config. Info:   The EUT antenna terminal was connected to the Spectrum
                         Analyzer through the attenuator 6.2dB (including cable loss).
 Standard:               FCC Part 90.210(k)(3)(ii) and Part 2.1051
 Note:                   Measurements were taken using 100kHz Resolution Bandwidth (RBW) of the Analyzer,
                         for frequencies within 1MHz of the Bandedge 300Hz RBW was used (indicated in the Table).

                                                        Table # 3-4-1

        Output                Edge        Maximum        Minimum        Measured
        Freq.                 Freq.      Output Power     Atten.         Atten.       Margin        Comments
        MHz                   MHz            Watt           dB                         dB
    902.25 (CW)             902.00           1.0            55.0         80.5         -25.5        RBW 300Hz
    903.75 (CW)             904.00           1.0            55.0         79.8         -24.8        RBW 300Hz
    910.00 (CW)             909.50           1.0            55.0         82.4         -27.4        RBW 300Hz
    921.50 (CW)             921.75           1.0            55.0         80.4         -25.4        RBW 300Hz
    912.75 (Mod)            909.50           1.0            55.0         63.0          -8.0
    918.75 (Mod)            921.75           1.0            55.0         59.3          -4.3




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                                   Graph # 3-4-1




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                                   Graph # 3-4-2




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                                   Graph # 3-4-3




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                                   Graph # 3-4-4




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                                   Graph # 3-4-5




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                                   Graph # 3-4-6




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3.5     Field Strength of Spurious Emissions, FCC 90.210(k)(3)(ii), 2.1053

Field Strength of Spurious Emissions was measured in the Anechoic Chamber in the frequency range up to
10 GHz (10th harmonic).
The substitution method of measurement was used for emissions with the level of field strength above the
general limits for unintentional radiation for unlicensed devices (FCC 15.109, Class A).
The substitution method of measurement is based on the calculation of the minimum attenuation of the
output ERP of the EUT.

Calculation of the minimum attenuation for antenna AA3152 Universal Toll Antenna
Output ERP = Pmax-at –antenna-terminal + Gantenna-gain
The measured in Section 3.1 maximum emission at antenna terminal Pmax-at –antenna-terminal is
29.5dBm, as a worse case 30dBm (according to the manufacturer specification) is chosen.
Output ERP = Pmax-at –antenna-terminal + Gantenna-gain = 30dBm + 13dBi = 43dbm = 20W
Minimum Attenuation = 55 + 10log (P) = 55 + 10log(20Watt) = 68dB
Maximum Spurious Emissions = Output ERP – Minimum Attenuation = 43dBm –68dB = -25dBm

Calculation of the minimum attenuation for antenna AA3153 Toll Antenna
Output ERP = Pmax-at –antenna-terminal + Gantenna-gain
The measured in Section 3.1 maximum emission at antenna terminal Pmax-at –antenna-terminal is
29.5dBm, as a worse case 30dBm (according to the manufacturer specification) is chosen.
Output ERP = Pmax-at –antenna-terminal + Gantenna-gain = 30dBm + 10.5dBi = 40.5dbm
Output ERP = 11.22W
Minimum Attenuation = 55 + 10log (P) = 55 + 10log(11.22Watt) = 65.5dB
Maximum Spurious Emissions = Output ERP – Minimum Attenuation = 40.5dBm – 65.5dB
Maximum Spurious Emissions = -25dBm

Test Procedure
The EUT was placed on a non-conductive table 0.8m above the ground plane inside the Anecoic Chamber.
The table was centered on a motorized turntable, which allows 360-degree rotation. The measurement
antenna was positioned at distance 3m. The radiated emissions were maximized by configuring the EUT, by
rotating the EUT, by changing antenna polarization, and by changing antenna height from 1 to 4m. Field
strength was measured and calculated (See Section 3.7). The Emissions with the level of about 20dB below
the Maximum Spurious Emissions were chosen for substitution method of measurement.
For substitution method the substitution antenna with the signal generator was placed instead of the EUT
with the center of substitution antenna was at the same location as the center of transmitter. The substitution
antenna was faced to measurement antenna with the same polarization as the measuring antenna. The level
of the generator output was adjusted until the previously recorded maximum emission reading for this set of
conditions is obtained. Substitution method of the Field Strength Calculation sees in Section 3.7.

The Table and Graphs below show the Field Strength of Spurious Radiation.




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 Radiated Emissions                     Date:                01-04-2001
 Company:                               TransCore
 Model:                                 IT2611
 Test Engineer:                         Norman Shpilsher
 Special Config. Info:                  Sabstitution Metod
 Limits                                 FCC 90.210(k)(3)(ii)
 Test Site:                             3m Anechoic Chamber
 Note:                                  The table shows the worst case radiated emissions

                                                              Table # 3-5-1


     Frequency           Measured          Substitution         Substitution    Substitution   Limit      Margin
                         Emissions       Antenna Power         Antenna Gain    Antenna EPR
        MHz               dB m V             dBm                   dBi         Power (dBm)     dBm          dB

       1807.5             62.12                 -47.5               8.4            -39.1       -25.0       -14.1
       1829.8             48.44                 -55.9               8.4            -47.5       -25.0       -22.5
       2708.2             61.19                 -39.5               9.4            -30.1       -25.0        -5.1
       2745.4             57.09                 -43.6               9.4            -34.2       -25.0        -9.2




FCC ID: FIH2611SS                    Report No:3011655 Rev. 3 – March, 2002                       Page 39 of 63


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                                                                Graph # 3-5-1

       Job # - 3011655
       Company - TransCore
                                                        INTERTEK TESTING SERVICES                                      maximum_v_h_cf
                                                                                                                       Maximum_12
                                                            RADIATED EMISSIONS 30MHz - 1GHz                            fcca
       Model # - IT2611
       Serial # -
                              80.0

                              75.0

                              70.0

                              65.0

                              60.0
             Amplitude dBuV




                              55.0

                              50.0

                              45.0

                              40.0

                              35.0

                              30.0

                              25.0

                              20.0

                              15.0

                              10.0
                                10.00M                                         100.00M                                           1.00G
                                                                           Frequency MHz



     Operator: Norman Shpilsher                                                               Job #: 3011655




                                                                Graph # 3-5-2

         Job # - 3011655
         Company - TransCore                                INTERTEK TESTING SERVICES                                   maximum_v_h_cf
         Model # - IT2611                                     Radiated Emissions 1GHz-10GHz                             Maximum_12
         Serial # -                                                                                                     fcc _a
         Additional Equipment -
                                       70.0

                                       65.0

                                       60.0

                                       55.0

                                       50.0
                      Amplitude dBuV




                                       45.0

                                       40.0

                                       35.0

                                       30.0

                                       25.0

                                       20.0

                                       15.0

                                       10.0

                                        5.0

                                         0
                                          1.0G                                                                                    10.0G
                                                                             Frequency GHz



      Operator: Norman Shpilsher                                                               Job #: 3011655




FCC ID: FIH2611SS                                Report No:3011655 Rev. 3 – March, 2002                         Page 40 of 63


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3.6     Frequency Stability, FCC 90.213(a), 2.1055

Frequency Stability with variation of ambient temperature was measured from –30 degrees C to +50
degrees C at frequency 915.75MHz and rated power input 120VAC/60Hz.

Frequency Stability with variation of primary supply voltage was measured at 85% (102V) and 115%
(138V) of rated AC Power Supply input voltage of 120V at frequency 915.75MHz.

Note: FCC 90.213(a) indicates that fixed non-multilateration transmitters with an authorized bandwidth that
is more than 40kHz from the band edge is not subject to frequency tolerance restriction.

Table and below shows the frequency stability vs. temperature ambient and supply voltage.

Test Procedure

The EUT was placed in an environmental test chamber and powered such that control element received
normal voltage and the transmitter provided maximum RF output. The Chamber was programmed to cool
from room temperature to minus 30 degrees C and then step in 10-degree increments to plus 50 degrees C.
For Frequency Stability testing with variation of primary supply voltage the EUT power supply was
powered at rated supply voltage at 120VAC/60Hz and then at 102VAC/60Hz and 138VAC/60Hz




FCC ID: FIH2611SS              Report No:3011655 Rev. 3 – March, 2002                    Page 41 of 63


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 Frequency Stability                 Date:            01-11-2002
 Company:                            TransCore
 Model:                              IT2611
 Special Config. Info:               Enviromental Chamber (Frequency Stability testing)
 Test Engineer:                      Norman Shpilsher
 Standard:                           FCC 90.213(a), FCC 2.1055

                                       Table # 3-6-1


                          Output         Frequency          Frequency     Minimum Freq.     Test
    Temperature          Frequency        Stability           Stability      Stability     Result
     Degree C              MHz              Hz                  ppm            ppm
         -30             915.75             445                 0.5            2.5          Pass
         -20             915.75             354                 0.4            2.5          Pass
         -10             915.75             234                 0.3            2.5          Pass
          0              915.75             94                  0.1            2.5          Pass
         10              915.75             22                  0.0            2.5          Pass
         20              915.75              0                  0.0            2.5          Pass
         30              915.75             84                  0.1            2.5          Pass
         40              915.75             178                 0.2            2.5          Pass
         50              915.75             218                 0.2            2.5          Pass
     Input Power          Output         Frequency          Frequency     Minimum Freq.     Test
     AC Voltage          Frequency        Stability           Stability      Stability     Result
         V                 MHz              Hz                  ppm            ppm

        102              915.75             10.0                0.0            2.5          Pass
        120              915.75              0.0                0.0            2.5          Pass
        138              915.75             10.0                0.0            2.5          Pass




FCC ID: FIH2611SS             Report No:3011655 Rev. 3 – March, 2002                 Page 42 of 63


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3.7     Field Strength Calculation

Straight method
The field strength is calculated by adding the emissions reading on the EMI Receiver to the factors associated
with preamplifiers (if any), antennas and cables. A sample calculation is included below.

FS = RA – AG + AF + CF

Where FS = Field Strength in dBìV/m
              RA = Receiver Amplitude (including preamplifier) in dBìV
              AG = Amplifier Gain in dBi
              CF = Cable Attenuation Factor in dB
              AF = Antenna Factor in dB/m

Assume a receiver reading of 47 dBìV is obtained. The amplifier gain of 15 dBi is subtracted. The antenna
factor of 19.5 dB/m and cable factor of 3.5 dB is added. The amplifier gain, antenna factor and cable factor
combined to the Total CF. The net field strength for comparison to the appropriate limit is 52 dBìV/m.

Substitution method
The field strength is calculated by adding the power reading on the substitution generator to the antenna gain
associated with substitution antenna, and cables. A sample calculation is included below.

FS = GP + AG - CF

Where FS = Field Strength in dBm
              GP = Generator Output Power in dBm
              AG = Antenna Gain in dBi
              CF = Cable Attenuation Factor in dB

Assume a generator output power reading of -40 dBm is obtained. The antenna gain is 13 dBi is added. The
cable factor of 0.5 dB is subtracted. The field strength for comparison to the limit is –27.5 dBm.

Tested by:

Norman Shpilsher
EMC Project Engineer
Intertek Testing Services NA, Inc.

Agent for TransCore
Signature

                                          Signature


Date: January 18, 2002




FCC ID: FIH2611SS               Report No:3011655 Rev. 3 – March, 2002                     Page 43 of 63


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4.0     TEST EQUIPMENT

Receivers/Spectrum Analyzers
                                                                            LAST CAL                TICK IF
                         DESCRIPTION                           SERIAL NO.              CAL DUE
                                                                              DATE                   USED

                HP85462A Receiver RF Section                  3325A00106     07/01      07/02           X

                  HP85460A RF Filter Section                  3330A00109     07/01      07/02           X

             Advantest Spectrum Analyzer R3271A                 55050084     05/01      05/02           X

                HP 83017A Microwave Amplifier                 3123A00475     09/01      09/02           X


Antennas
                                                                            LAST CAL                TICK IF
                         DESCRIPTION                           SERIAL NO.              CAL DUE
                                                                              DATE                   USED

              Schaffner-Chase Bicono-Log Antenna                  2468       11/01      11/02           X

                  EMCO Horn antenna 3115                       9507-4513     09/01      09/02           X

                  EMCO Horn antenna 3115                          6579       12/01      12/02           X


Artificial Mains Networks/Absorbing Clamps

                                                                            LAST CAL                TICK IF
                         DESCRIPTION                           SERIAL NO.              CAL DUE
                                                                              DATE                   USED


                        FCC LISN-2                                316       01/25/01   01/25/02

                     FCC-LISN-50-25-2                             2014       04/01      04/02


Generators, Power Source, Environmental Chamber
                                                                            LAST CAL                TICK IF
                         DESCRIPTION                           SERIAL NO.              CAL DUE
                                                                              DATE                   USED

           Rohde & Schwarz SMT 03, Signal Generator             DE12157      06/01      06/02           X

             HP 6813B AC Power Source/Analyzer                3524A00552     07/01      07/02           X

      ESPEC Environmental Chamber EWPH781-CCA                    304469      10/01      10/02           X




FCC ID: FIH2611SS                 Report No:3011655 Rev. 3 – March, 2002                Page 44 of 63


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                                  EXHIBIT I

                       TEST SET UP PHOTOS




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                     Radiated Emissions Test Configuration




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                     Radiated Emissions Test Configuration




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                     Radiated Emissions Test Configuration




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                     Radiated Emissions Test Configuration




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                                       EXHIBIT II

                          FCC ID LABEL LOCATION

                    (See ID Label/Location Info. Attachments)




FCC ID: FIH2611SS         Report No:3011655 Rev. 3 – March, 2002   Page 50 of 63


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                                EXHIBIT III

                         EXTERNAL PHOTOS




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                                  External Photo




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                                  External Photo




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                                EXHIBIT IV

                         INTERNAL PHOTOS




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                                   Internal Photo




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                                   Internal Photo




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                                   Internal Photo




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                                   Internal Photo




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                                   Internal Photo




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                                   Internal Photo




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                                   Internal Photo




FCC ID: FIH2611SS   Report No:3011655 Rev. 3 – March, 2002   Page 61 of 63


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                                    EXHIBIT V

        ELECTRICAL SCHEMATICS AND BLOCK DIAGRAM

              (See Block Diagram and Schematic Attachments)




FCC ID: FIH2611SS      Report No:3011655 Rev. 3 – March, 2002   Page 62 of 63


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                                EXHIBIT VI

         USER MANUAL AND OPERATIONAL DESCRIPTION

     (See User Manual and Operational Description Attachments)




FCC ID: FIH2611SS   Report No:3011655 Rev. 3 – March, 2002   Page 63 of 63



Document Created: 2019-02-16 10:54:44
Document Modified: 2019-02-16 10:54:44

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