User's Manual

SECTION 2: FACTORY TEST PROCEDURE
663195.DOC Page 15
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Step 13 Inject on-frequency signal at a level of –80 dBm, modulated with a 1 KHz test tone at
±5.0 KHz deviation into Receiver 1.
Step 14 While monitoring the AC voltage at TP6 adjust audio 1 AC adjustment potentiometer
(R72) for 350 mVRMS (±1 mV).
Step 15 While monitoring the DC voltage at TP6 adjust audio 1 DC adjustment potentiometer
(R57) for 2.500 VDC (±1 mV).
The audio AC and DC adjustments are interactive, therefore continue adjusting R72 for 350 mVRMS and
R57 for 2.500 VDC until further adjustments are no longer required.
Step 16 Inject on-frequency signal at a level of –80 dBm, modulated with a 1 KHz test tone at
±5.0 KHz deviation into Receiver 2.
Step 17 While monitoring the AC voltage at TP6 adjust audio 1 AC adjustment potentiometer
(R71) for 350 mVRMS (±1 mV).
Step 18 While monitoring the DC voltage at TP6 adjust audio 1 DC adjustment potentiometer
(R58) for 2.500 VDC (±1 mV).
The audio AC and DC adjustments are interactive, therefore continue adjusting R71 for 350 mVRMS and
R58 for 2.500 VDC until further adjustments are no longer required.
Step 19 Inject on-frequency signal at a level of –80 dBm, modulated with a 1 KHz test tone at
±5.0 KHz deviation into Receiver 3.
Step 20 While monitoring the AC voltage at TP6 adjust audio 1 AC adjustment potentiometer
(R53) for 350 mVRMS (±1 mV).
Step 21 While monitoring the DC voltage at TP6 adjust audio 1 DC adjustment potentiometer
(R59) for 2.500 VDC (±1 mV).
The audio AC and DC adjustments are interactive, therefore continue adjusting R53 for 350 mVRMS and
R59 for 2.500 VDC until further adjustments are no longer required.
Step 22 Adjust the carrier detect potentiometer (R74) to illuminate a level of –116 dBm.
Receive Data
Step 1 Using a calibrated mobile radio, generate uplink data messages using the X=1400,19
command in the IPMessage Utility program.
Step 2 Attach an antenna to one of the base station’s receiver ports and verify on the base
station monitor screen (HyperTerminal) that the received message data quality are
consistently 240 and higher for 1400 character messages. Repeat test for each receiver.