Test Report Part 1

FCC ID: NL54100

Test Report

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FCCID_22198

MEASUREMENT/TECHNICAL REPORT

COMPANY NAME: Computational Systems, Incorporated

MODEL: RF Smart Sensor, 4100, 001 Eng. Proto

FCC ID: NL54100

DATE: January 15, 1998

This report concerns (check one): Original grant X
Class II change_____

Equipment Type: DSS- Spread Spectrum Transceiver

Deferred grant requested per 47 CFR 0.457(d)(1)(ii)? yes_____ No X

If yes, defer until:_________________
date

N.A. agrees to notify the Commission by N.A.
date
of the intended date of announcement of the product so that the grant can be issued
on that date.

Report prepared by:

United States Technologies, Inc.
3505 Francis Circle
Alpharetta, GA 30004

Phone Number: (770) 740-0717
Fax Number: (770) 740-1508

FCC ID: NL54100

TABLE OF CONTENTS

LETTER OF CONFIDENTIALITY

SECTION 1

GENERAL INFORMATION

1.1 Product Description
1.2 Related Submittal(s)

SECTION 2

TESTS AND MEASUREMENTS

2.1 Configuration of Tested EUT
2.2 Test Facility
2.3 Test Equipment
2.4 Modifications
2.5 Test Procedure and Results
2.6 Antenna Description
2.7 Peak Power (Antenna Conducted at Antenna Terminal)
2.8 Antenna Conducted Spurious Emissions
2.9 Peak Radiated Spurious Emissions
2.10 Average Radiated Spurious Emissions
2.11 Minimum 6 dB Bandwidth
2.12 Power Spectral Density
2.13 Processing Gain
2.14 Power Line Conducted Emissions for Transmitter
2.15 Radiated Emissions for Digital Device & Receiver (if Applicable)
2.16 Power Line Conducted for Digital Device & Receiver (if Applicable)

SECTION 3

LABELING INFORMATION

SECTION 4

BLOCK DIAGRAM(S)/ SCHEMATIC(S)

SECTION 5

PHOTOGRAPHS

SECTION 6

USER'S MANUAL

FCC ID: NL54100

LIST OF FIGURES AND TABLES

FIGURES

1) Test Configuration
2) Photograph(s) for Spurious and Fundamental Emissions
Field Strength of Fundamental Emission
Field Strength of Spurious Emissions

TABLES

1) EUT and Peripherals
2) Test Instruments
Field Strength of Fundamental Emission
Field Strength of Spurious Emissions
Radiated Emissions
Power Line Conducted Emissions

FCC ID: NL54100

GENERAL INFORMATION

1.1 Product Description

The Equipment Under Test (EUT) is the Computational Systems, Incorporated Spread
Spectrum Transceiver, Model RF Smart Sensor, 4100, 001 Eng. Proto.

FCC ID: NL54100

1.2 Related Submittal(s)/Grant(s)

The EUT will be used with part of a system to send/receive data. The transceiver
presented in this report will be used with another transceiver which has been submitted
and approved under FCC ID: NL52400.

The EUT is subject to the following authorizations:

a) Certification as a transceiver
b) Verification as a receiver and digital device

The information contained in this report is presented for the certification & verification
authorization(s) for the EUT.

FCC ID: NL54100

TEST AND MEASUREMENTS

2.1 Configuration of Tested System

The sample was tested per ANSI C63.4, Methods of Measurement from Low-Voltage
Electrical and Electronic Equipment in the Range of 9 kHz to 40 GHz (1992). Conducted
and radiated emissions data were taken with the test receiver or spectrum analyzer's
resolution bandwidth adjusted to 9 kHz and 120 kHz, respectively. All measurements are
peak unless stated otherwise. The video filter associated with the spectrum analyzer was
off throughout the evaluation process. Interconnecting cables were manipulated as
necessary to maximize emissions. Interconnecting cables were manipulated as necessary
to maximize emissions. A block diagram of the tested system is shown in Figure 1. Test
configuration photographs for spurious and fundamental emissions are shown in Figure
2.

The sample used for testing was received by U.S. Technologies on December 17, 1998
in good condition.

Due to complexities involved with dismantling the unit to program channel selection, CSI
provided separate preprogrammed units, four were for different transmit channels and one
for receive mode of operation.

2.2 Test Facility

Testing was performed at US Tech's measurement facility at 3505 Francis Circle,
Alpharetta, GA. This site has been fully described and submitted to the FCC, and
accepted in their letter marked 31040/SIT. Additionally this site has also been fully
described and submitted to Industry Canada (IC), and has been approved under file
number IC2982.

2.3 Test Equipment

Table 2 describes test equipment used to evaluate this product.

2.4 Modifications

No modifications were made by US Tech, to bring the EUT into compliance with FCC Part
15, Class B Limits for the transmitter portion of the EUT or the Class A Digital Device
Requirements.

FCC ID: NL54100

FIGURE 1

TEST CONFIGURATION

EUT

FCC ID: NL54100

TABLE 1

EUT and Peripherals

PERIPHERAL MODEL SERIAL FCC ID: CABLES
MANUFACTURER NUMBER NUMBER P/D

Transmitter 4100 14427, 14424, NL54100 None
Computational 14399, 14411, & (Pending)
Systems, 14396
Incorporated
(EUT)

FCC ID: NL54100

TABLE 2
TEST INSTRUMENTS
TYPE MANUFACTURER MODEL SN.

SPECTRUM ANALYZER HEWLETT-PACKARD 8593E 3205A00124

SPECTRUM ANALYZER HEWLETT-PACKARD 8558B 2332A09900

S A DISPLAY HEWLETT-PACKARD 853A 2404A02387

COMB GENERATOR HEWLETT-PACKARD 8406A 1632A01519

RF PREAMP HEWLETT-PACKARD 8447D 1937A03355

RF PREAMP HEWLETT-PACKARD 8449B 3008A00480

HORN ANTENNA EMCO 3115 3723

BICONICAL ANTENNA EMCO 3110 9307-1431

LOG PERIODIC EMCO 3146 9110-3600
ANTENNA
BILOG CHASE CBL6112A 2238

LISN SOLAR ELE. 8012 865577

LISN SOLAR ELE. 8028 910494

LISN SOLAR ELE. 8028 910495

THERMOMETER FLUKE 52 5215250

MULTIMETER FLUKE 85 53710469

FUNCTION TEKTRONIX CFG250 CFG250TW1505
GENERATOR 9
PLOTTER HEWLETT-PACKARD 7475A 2325A65394

FCC ID: NL54100

2.6 Antenna Description (Paragraph 15.203)

An intentional radiator shall be designed to ensure that no antenna other than that
furnished by the responsible party shall be used with the device. The use of a permanently
attached antenna or of an antenna that uses a unique coupling to the intentional radiator
shall be considered sufficient to comply with the provisions of this section.

The Model Computational Systems, Incorporated RF Smart Sensor, 4100, 001 Eng. Proto
incorporates an internal antenna only.

Manufacturer: Cushcraft Corporation
48 Perimeter Road
P.O. Box 4680
Manchester, NH 03108

Type: Offset Patch

Model Number: Custom Made

Gain: 0 dBd

Connector: Hirose H.FL-R

FCC ID: NL54100

2.7 Peak power within the band 2400-2483.5 MHz per FCC Section 15.247(b)

Peak power within the band 2400 – 2483.5 MHz has been measured with a spectrum
analyzer by connecting the spectrum analyzer directly via a short cable to the antenna
output terminals or across the antenna leads on the PCB as specified by the manufacturer.
The results of the measurements are given in Table 3 and Figure 3a through Figure 3c.
The spectrum analyzer did not have a RBW greater than the 6 dB bandwidth for the largest
Fundamental Bandwidth, therefore this data was taken using the channel power function
of the spectrum analyzer.

The EUT did not incorporate any antennas of directional gain greater than 6 dBi, therefore
the output power has not been reduced as required by 15.247(b)(3).

FCC ID: NL54100

TABLE 3
PEAK POWER OUTPUT

Test Date: January 15, 1998
UST Project: 98-672
Customer: Computational Systems, Incorporated
Model: RF Smart Sensor, 4100, 001 Eng. Proto

Frequency of Measurement Measurement FCC Limit
Fundamental (dBm)* (Watt)* (Watt)
(MHz)

2.42250 18.17 0.0656 1.0

2.43250 17.14 0.0518 1.0

2.45250 17.07 0.0590 1.0

* Measurement includes 1.25 cable loss

Tester
Signature: Name: Tim R. Johnson

FCC ID: NL54100

2.8 Antenna Conducted Spurious Emission in the Frequency Range 30 - 25000 MHz
(FCC Section 15.247(c))

Spurious emissions in the frequency range 30 - 25000 have been measured with a
spectrum analyzer by connecting the spectrum analyzer directly via a short cable to the
antenna output terminals or across the antenna leads on the PCB as specified by the
manufacturer. The spectrum analyzer was set for a 50 $ impedance with the RBW = 100
kHz & VBW > RBW. All spurious emissions were measured to be greater than 20 dB
down from the fundamental. The results of conducted spurious emissions are given in
Figure 4a through Figure 4l.

Document Created: 2001-07-06 09:22:52
Document Modified: 2001-07-06 09:22:52

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