Test Report

FCC ID: TMEVR4100X003

Test Report

Download: PDF
FCCID_1130664

Date:                              April 16, 2009

Federal Communications Commission
Via: Electronic Filing


Attention:                         Authorization & Evaluation Division

Applicant:                         Blackboard, Inc.
Equipment:                         VR4100
FCC ID:                            TMEVR4100X003
FCC Rules:                         15.225

Gentlemen:

On behalf of the Applicant, enclosed please find Application Form 731, Engineering Test Report and all pertinent
documentation, the whole for approval of the referenced equipment as shown.

We trust the same is in order. Should you need any further information, kindly contact the writer who is authorized
to act as agent.




                                                                    Sincerely yours,




                                                                    Hoosamuddin S. Bandukwala, Lab Director

Flom Test Lab
3356 N. San Marcos Place, Suite 107
Chandler, Arizona 85225-7176
(866) 311-3268 phone, (480) 926-3598 fax                                          p0910004, d0940011 Rev 2.0


List Of Exhibits
                              (FCC Certification (Transmitters) - Revised 9/28/98)

Applicant:                           Blackboard, Inc.

FCC ID:                              TMEVR4100X003


By Applicant:


                   1. Letter Of Authorization

                   2. Identification Drawings
                                Id Label
                               Location Info
                                Attestation Statement(S)
                               Location of Compliance Statement

                   3. Documentation: 2.1033(B)
                          (3)     User Manual(S)
                          (4)     Operational Description
                          (5)     Block Diagram
                          (5)     Schematic Diagram
                          (7)     External Photographs
                                  Internal Photographs
                                  Parts List
                                  Active Devices


By F.T.L. Inc.


                   A.      Testimonial & Statement of Certification

                   B.      Statement of Qualifications




Flom Test Lab
3356 N. San Marcos Place, Suite 107
Chandler, Arizona 85225-7176
(866) 311-3268 phone, (480) 926-3598 fax                                             p0910004, d0940011 Rev 2.0


                                            Test Report
                                                   for

                                       FCC ID: TMEVR4100X003
                                            Model: VR4100

                                                   to

                                  Federal Communications Commission

                                           Rule Part(s)15.225

                                     Date Of Report: April 16, 2009


On the Behalf of the Applicant:    Blackboard, Inc.
                                   22601 North 19th Ave, Suite 200
                                   Phoenix, AZ 85027


Attention of:                      Tom Kuestersteffen
                                   623-476-1263
                                   email: tkuestersteffen@blackboard.com
                                   and/or Tim Mattson
                                   623-476-1400




Supervised By:                                                  Hoosamuddin S. Bandukwala, Lab Director


Flom Test Lab
3356 N. San Marcos Place, Suite 107
Chandler, Arizona 85225-7176
(866) 311-3268 phone, (480) 926-3598 fax                                    p0910004, d0940011 Rev 2.0


                                   Test Report Revision History
Revision          Date             Revised By   Reason for revision
1.0               April 16, 2009   J Erhard     Original Document
2.0               June 2, 2009     J Erhard     Add conducted emissions test data




Flom Test Lab
3356 N. San Marcos Place, Suite 107
Chandler, Arizona 85225-7176
(866) 311-3268 phone, (480) 926-3598 fax                                 p0910004, d0940011 Rev 2.0


                            The applicant has been cautioned as to the following:

15.21            Information to User.

The users manual or instruction manual for an intentional radiator shall caution the user that changes or
modifications not expressly approved by the party responsible for compliance could void the user's authority to
operate the equipment.

15.27(a)         Special Accessories.

Equipment marketed to a consumer must be capable of complying with the necessary regulations in the
configuration in which the equipment is marketed. Where special accessories, such as shielded cables and/or
special connectors are required to enable an unintentional or intentional radiator to comply with the emission
limits in this part, the equipment must be marketed with, i.e. shipped and sold with, those special accessories.
However, in lieu of shipping or packaging the special accessories with the unintentional or intentional radiator, the
responsible party may employ other methods of ensuring that the special accessories are provided to the
consumer, without additional charge.

Information detailing any alternative method used to supply the special accessories for a grant of equipment
authorization or retained in the verification records, as appropriate. The party responsible for the equipment, as
detailed in § 2.909 of this chapter, shall ensure that these special accessories are provided with the equipment.
The instruction manual for such devices shall include appropriate instructions on the first page of text concerned
with the installation of the device that these special accessories must be used with the device. It is the
responsibility of the user to use the needed special accessories supplied with the equipment.




Flom Test Lab
3356 N. San Marcos Place, Suite 107
Chandler, Arizona 85225-7176
(866) 311-3268 phone, (480) 926-3598 fax                                            p0910004, d0940011 Rev 2.0


                             Testimonial And Statement Of Certification


This is to certify that:


        1.       That the application was prepared either by, or under the direct supervision of, the undersigned.

        2.       That the technical data supplied with the application was taken under my direction and
                 supervision.

        3.       That the data was obtained on representative units, randomly selected.

        4.       That, to the best of my knowledge and belief, the facts set forth in the application and
                 accompanying technical data are true and correct.




Certifying Engineer:                                                Hoosamuddin S. Bandukwala, Lab Director


Flom Test Lab
3356 N. San Marcos Place, Suite 107
Chandler, Arizona 85225-7176
(866) 311-3268 phone, (480) 926-3598 fax                                           p0910004, d0940011 Rev 2.0


                                            Table Of Contents


Rule                  Description                                                                Page



                      Test Report                                                                   1

2.1033(c)             General Information Required                                                  2

                      Standard Test Conditions and Engineering Practices                            4

                      Test Results Summary                                                          5

15.225(a)(b)(c)(d)    Field Strength                                                                6

15.209                Radiated Emissions                                                           10

15.225(e)             Frequency Stability                                                          11

15.207.               Powerline Conducted Emissions                                                12

                      RSS 210 99% Occupied Bandwidth                                               13

.                     Test Equipment Utilized                                                      14




Flom Test Lab
3356 N. San Marcos Place, Suite 107
Chandler, Arizona 85225-7176
(866) 311-3268 phone, (480) 926-3598 fax                                   p0910004, d0940011 Rev 2.0


Required information per ISO 17025-2005, paragraph 5.10.2:
a)                                            Test Report

b) Laboratory:                 Flom Test Lab, Inc.
 (FCC: 31040/SIT)              3356 N. San Marcos Place, Suite 107
 (Canada: IC 2044A-1)          Chandler, AZ 85225

c) Report Number:              d0940011

d) Client:                     Blackboard, Inc.

e) Identification:             VR4100

  Description:                 13.56 MHz Transmitter

f) EUT Condition:              Not required unless specified in individual tests.

g) Report Date:                April 16, 2009

h, j, k):                      As indicated in individual tests.

i) Sampling method:            No sampling procedure used.

l) Uncertainty:                In accordance with FTL internal quality manual.

m) Supervised by:




                               Hoosamuddin S. Bandukwala, Lab Director

n) Results:                    The results presented in this report relate only to the item tested.

o) Reproduction:               This report must not be reproduced, except in full, without written permission
                               from this laboratory.




Flom Test Lab
3356 N. San Marcos Place, Suite 107
Chandler, Arizona 85225-7176                                                                  Page 1 of 14
(866) 311-3268 phone, (480) 926-3598 fax                                        p0910004, d0940011 Rev 2.0


                              List Of General Information Required For Certification

                 In Accordance with FCC Rules and Regulations, Volume II, Part 2 and to 15.225

Sub-Part 2.1033
(c)(1):

Name and Address of Applicant:              Blackboard, Inc.

(c)(2):   FCC ID:                           TMEVR4100X003

          Model Number:                     VR4100

(c)(3):   Instruction Manual(s):

                          Please See Attached Exhibits

(c)(4):   Type of Emission:                 ASK

(c)(5):   FREQUENCY RANGE, MHz:             13.56


(c)(6):   Power Rating                      0.632 µW
                         Switchable                      Variable              X    N/A

(c)(7):   Maximum Allowable Power              5 µW

15.203: Antenna Requirement:
                                        X       The antenna is permanently attached to the EUT
                                                The antenna uses a unique coupling
                                                The EUT must be professionally installed
                                                The antenna requirement does not apply




Flom Test Lab
3356 N. San Marcos Place, Suite 107
Chandler, Arizona 85225-7176                                                                     Page 2 of 14
(866) 311-3268 phone, (480) 926-3598 fax                                           p0910004, d0940011 Rev 2.0


Subpart 2.1033 (continued)

(c)(8):   Circuit Diagram/Circuit Description:
                  Including description of circuitry & devices provided for determining and stabilizing frequency, for
                  suppression of spurious radiation, for limiting modulation and limiting power.

                           Please See Attached Exhibits

(c)(9):   Label Information:

                           Please See Attached Exhibits

(c)(10): Photographs:

                           Please See Attached Exhibits

(c)(11): Digital Modulation Description:

                           ___ Attached Exhibits
                           _x_ N/A

(c)(12): Test And Measurement Data:

                           Follows




Flom Test Lab
3356 N. San Marcos Place, Suite 107
Chandler, Arizona 85225-7176                                                                        Page 3 of 14
(866) 311-3268 phone, (480) 926-3598 fax                                              p0910004, d0940011 Rev 2.0


Sub-part
2.1033(b):                                 Test And Measurement Data

All tests and measurement data shown were performed in accordance with FCC Rules and Regulations, Volume
II; Part 2 and the following individual Parts, 15.225.


                            Standard Test Conditions and Engineering Practices

Except as noted herein, the following conditions and procedures were observed during the testing:

In accordance with ANSI C63.4-2003 unless otherwise indicated in the specific measurement results, the ambient
temperature of the actual EUT was maintained within the range of 10° to 40°C (50° to 104 °F) unless the
particular equipment requirements specify testing over a different temperature range. Also, unless otherwise
indicated, the humidity levels were in the range of 10% to 90% relative humidity.


Measurement results, unless otherwise noted, are worst-case measurements.


A2LA

“A2LA has accredited Flom Test Labs, Inc. Chandler, AZ for technical competence in the field of Electrical
testing. The accreditation covers the specific tests and types of tests listed on the agreed scope of
accreditation. This laboratory meets the requirements of ISO 17025:2005 ‘General Requirements for the
Competence of Testing and Calibration Laboratories’ and any additional program requirements in the
identified field of testing.”

Please refer to www.a2la.org for current scope of accreditation.

Certificate number: 2152.01




FCC OATS Reg. #933597

IC Reg. # 2044A-1




Flom Test Lab
3356 N. San Marcos Place, Suite 107
Chandler, Arizona 85225-7176                                                                   Page 4 of 14
(866) 311-3268 phone, (480) 926-3598 fax                                         p0910004, d0940011 Rev 2.0


                                           Test Results Summary

      Specification                        Test Name              Pass, Fail,        Comments
                                                                     N/A
        15.225(a)              Fundamental Field Strength           Pass
      15.225(b)(c)(d)         Out of Band Spurious Emissions        Pass
        15.225(e)                    Frequency Stability            Pass
          12.207              Conducted Powerline Emissions         Pass
         RSS-210                99% Occupied Bandwidth              Pass




Flom Test Lab
3356 N. San Marcos Place, Suite 107
Chandler, Arizona 85225-7176                                                              Page 5 of 14
(866) 311-3268 phone, (480) 926-3598 fax                                    p0910004, d0940011 Rev 2.0


Name of Test:                    Field Strength
Specification:                   15.225(a)(b)(c)(d)                     Engineer: J Erhard
Test Equipment Utilized          i00033, i00054, i00326                 Test Date: 6/4/2009

                                               Test Procedure

The UUT was tested on an anechoic chamber at a distance of 1 meter from the receiving loop antenna. A
spectrum analyzer was used to verify that the UUT met the requirements for Fundamental Field Strength. The
antenna correction and distance correction factors were summed with the quasi-peak measurement to ensure
accurate readings were obtained. The following table indicates the highest emission in each of the indicated
bands.

                                                  Test Setup


                           UUT                     Antenna                   Spectrum
                                                                             Analyzer



                                               Field Strength

  Frequency         Measured          Monitored     Distance    Antenna    Corrected        Limit     Result
     Band           Frequency           Level       CF (dB)     CF (dB)   Measurement     (dBuV/m)
    (MHz)             (MHz)           (dBuV/m)                             (dBuV/m)
13.110_13.410        13.3479            53.18         59.1       17.8        -23.72           40.51   Pass
13.410_13.553         13.552            60.40         59.1       17.8        -16.50           50.47   Pass
13.553_13.567         13.560            75.00         59.1       17.8        -1.900           84.00   Pass
13.567_13.710         13.588            57.92         59.1       17.8        -18.98           50.47   Pass
13.710_14.010        13.7715            48.59         59.1       17.8        -28.31           40.51   Pass

* Note. Cable correction factors are not included in this measurement as the low loss of the high quality
TWINAX cable at low frequencies in practically non-existent.




Flom Test Lab
3356 N. San Marcos Place, Suite 107
Chandler, Arizona 85225-7176                                                                Page 6 of 14
(866) 311-3268 phone, (480) 926-3598 fax                                      p0910004, d0940011 Rev 2.0


                                           Field Strength Plots

                                           13.110_13.410 MHz




                                           13.410_13.553 MHz




Flom Test Lab
3356 N. San Marcos Place, Suite 107
Chandler, Arizona 85225-7176                                                    Page 7 of 14
(866) 311-3268 phone, (480) 926-3598 fax                          p0910004, d0940011 Rev 2.0


                                           13.553_13.567 MHz




                                           13.567_13.710 MHz




Flom Test Lab
3356 N. San Marcos Place, Suite 107
Chandler, Arizona 85225-7176                                                 Page 8 of 14
(866) 311-3268 phone, (480) 926-3598 fax                       p0910004, d0940011 Rev 2.0


                                           13.710_14.010 MHz




Flom Test Lab
3356 N. San Marcos Place, Suite 107
Chandler, Arizona 85225-7176                                                 Page 9 of 14
(866) 311-3268 phone, (480) 926-3598 fax                       p0910004, d0940011 Rev 2.0


Name of Test:                  Radiated Emissions
Specification:                 15.209                                 Engineer: J Erhard
Test Equipment Utilized        i00049, i00054, i00267                 Test Date: 4/13/2009

                                              Test Procedure

The UUT was tested on an Open Area Test Site (OATS) at a distance of 3 meters from the receiving antenna. A
spectrum analyzer was used to verify that the UUT met the requirements for Radiated Emissions. The spectrum
for each tuned frequency was examined beyond the 10th harmonic.

                                                Test Setup


                            UUT                    Antenna                   Spectrum
                                                                             Analyzer


                                           Radiated Emissions

      Emission Freq    Measured Level      Correction Factor   Corrected Level     Limit     Margin
         (MHz)           (dBuV/m)                (dB)            (dBuV/m)        (dBuV/m)     (dB)
         50.465             9.5                   9.8               19.3           40.0      -20.7
        117.990            15.8                  13.2               29.0           43.0      -14.0
        221.699            22.2                  12.2               34.4           46.0      -11.6
        224.449             8.6                  12.5               21.1           46.0      -24.9
        346.424            20.9                  17.4               38.3           46.0       -7.7
        406.235            10.8                  19.2               30.0           46.0      -16.0




Flom Test Lab
3356 N. San Marcos Place, Suite 107
Chandler, Arizona 85225-7176                                                               Page 10 of 14
(866) 311-3268 phone, (480) 926-3598 fax                                     p0910004, d0940011 Rev 2.0


Name of Test:                                      Frequency Stability
Specification:                                     15.225(e)                                     Engineer: J Erhard
Test Equipment Utilized                            i00019, i00027, i00054, i00319                Test Date: 4/13/2009

                                                                    Test Procedure

The UUT was placed in an environmental test chamber and a frequency counter was utilized to verify that the
frequency stability met the requirement for frequency stability across the temperature range from –20°C to +50°C.
A variable DC power supply was used to vary the voltage from 85% to 115% of the rated voltage.

                                                                      Test Setup


                                            DC Power                        UUT                        Frequency
                                             Supply                                                     Counter




                                           Frequency Stability vs. Temperature

                      13.5615000

                      13.5610000
    Frequency (MHz)




                      13.5605000                                                                               Upper Limit
                                                                                                               Measured Frequency
                      13.5600000
                                                                                                               Lower Limit
                      13.5595000

                      13.5590000

                      13.5585000
                                     -30    -20    -10        0      10        20    30     40       50
                                                          Temperature (Centigrade)



                                                           Frequency Stability vs. Voltage

                      13.56150

                      13.56100
   Frequency (MHz)




                      13.56050
                                                                                                                   Upper Limit
                      13.56000                                                                                     Measured Frequency
                                                                                                                   Low er Limit
                      13.55950

                      13.55900

                      13.55850
                             23.00                25.80                28.60              31.40
                                                                  Voltage



Flom Test Lab
3356 N. San Marcos Place, Suite 107
Chandler, Arizona 85225-7176                                                                                         Page 11 of 14
(866) 311-3268 phone, (480) 926-3598 fax                                                               p0910004, d0940011 Rev 2.0


Name of Test:                    Powerline Conducted Emissions
Specification:                   15.207                                  Engineer: J Erhard
Test Equipment Utilized          i00033, i00054, i00270                  Test Date: 4/10/2009

                                                Test Procedure

The UUT power cable connected to a LISN and the monitored output of the LISN was connected directly to a
spectrum analyzer. The conducted emissions from 150 kHz to 30 MHz were monitored and compared to the
specification limits. The average measurements were the worst-case and are recorded in the tables below.

                                                    Test Setup

                                                                    Spectrum
                                                                    Analyzer
                                    LISN

                                                                       UUT
                                                                    Power Cable

                                        Line 1 Quasi-Peak Test Results

            Emission      Monitored        LISN       Attenuation   Corrected       Limit    Margin
           Frequency        Level          Factor         (dB)        Level       (dBuV/m)    (dB)
                          (dBuV/m)          (dB)                    (dBuV/m)
          208.93 KHz        43.93            0.2             10       54.16        64.32     -10.16
          200.84 KHz        44.1             0.2             10       54.33        64.55     -10.22
          200.44 KHz        43.88            0.2             10       54.1         64.56     -10.46
          184.11 KHz        43.83            0.2             10       54.03        65.03     -10.99
          183.14 KHz        43.76            0.2             10       53.96        65.05     -11.09
          162.08 KHz        44.31            0.2             10       54.54        65.65     -11.11

                                        Line 2 Quasi-Peak Test Results

            Emission      Monitored        LISN       Attenuation   Corrected       Limit     Limit
           Frequency        Level          Factor         (dB)        Level       (dBuV/m)    (dB)
                          (dBuV/m)          (dB)                    (dBuV/m)
          162.32 KHz        44.02            0.2             10       54.25        65.65     -11.39
          162.02 KHz        44.00            0.2             10       54.23        65.66     -11.42
          158.94 KHz        44.21           0.21             10       54.46        65.74     -11.29
          156.58 KHz        44.21           0.23             10       54.48        65.81     -11.33
          154.08 KHz        43.95           0.26             10       54.24        65.88     -11.64
          151.81 KHz        44.03           0.28             10       54.35        65.95      -11.6

All other results were greater than 20 dB below the limit.




Flom Test Lab
3356 N. San Marcos Place, Suite 107
Chandler, Arizona 85225-7176                                                                    Page 12 of 14
(866) 311-3268 phone, (480) 926-3598 fax                                          p0910004, d0940011 Rev 2.0


Name of Test:                   99% Occupied Bandwidth
Specification:                  RSS 210 Industry Canada Only         Engineer: J Erhard
Test Equipment Utilized         i00054, i00291, i00326               Test Date: 6/4/2009

                                            Test Procedure

The UUT was tested on an anechoic chamber at a distance of 1 meter from the receiving loop antenna. A
spectrum analyzer was used to measure the 99% occupied bandwidth.

                                               Test Setup


                          UUT                   Antenna                   Spectrum
                                                                          Analyzer


                                       99% Bandwidth Summary

                          Frequency MHz       Recorded Measurement     Result
                              13.56                 21.0 kHz           Pass




Flom Test Lab
3356 N. San Marcos Place, Suite 107
Chandler, Arizona 85225-7176                                                             Page 13 of 14
(866) 311-3268 phone, (480) 926-3598 fax                                   p0910004, d0940011 Rev 2.0


                                            Test Equipment Utilized

      Description         MFG           Model Number          FTL Asset Number       Last Cal Date    Cal Due Date
 Frequency Counter         HP              5334B                   i00019              1/26/09           1/26/11
Temperature Chamber      Tenney           Tenney Jr                i00027              12/8/08           12/8/09
  Spectrum Analyzer        HP              85462A                  i00033              10/14/08         10/14/09
  Spectrum Analyzer        HP               8566B                  i00049              12/3/08           12/3/08
    Power Supply           HP              6286A                   i00054                 NCR              NCR
   Bi-Log Antenna       Schaffner        CBL6111C                  i00267              11/6/07          11/6/09
         DMM              Fluke              87 III                i00319               12/5/08          12/5/09
 Active Loop Antenna     EMCO                6507                  i00326                4/1/09           4/1/11


  In addition to the above listed equipment standard RF connectors and cables were utilized in the testing of the
  described equipment. Prior to testing these components were tested to verify proper operation.




  END OF TEST REPORT




  Flom Test Lab
  3356 N. San Marcos Place, Suite 107
  Chandler, Arizona 85225-7176                                                                  Page 14 of 14
  (866) 311-3268 phone, (480) 926-3598 fax                                        p0910004, d0940011 Rev 2.0



Document Created: 2009-06-08 14:36:47
Document Modified: 2009-06-08 14:36:47

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