User's Manual

SECTION 4: FACTORY TEST PROCEDURE
489288.DOC Page 13
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Exciter
Step 1 Using the X=1400,19 command, generate data messages so the transmit power and
frequency can be checked.
Step 2 Step 3 Connect the base stations’ transmit port to the HP communication test set.
Step 4 While transmitting data messages using the X=1400,19 command, adjust the following:
 RV2 for ±5 KHz deviation
Transmit output power should be approximately 1mWatt. The REFMOD adjustment needs to be made
while the base station is transmitting real data messages to and from a mobile radio. This is most easily
done using the ping command to ping the IPNC from a mobile radio. This will cause the base station to
repeatedly send data messages and will facilitate the REFMOD adjustment.
Step 5 Connect the base station to the IPNC.
Step 6 Using a calibrated mobile radio operating on the base station’s channel, adjust RV1 for
consistent data quality readings of 248 (as observed on the mobile radio’s attached PC
IPMessage window). Access the MSDOS prompt and ping using the following command:
>;ping 192.168.3.3 –t –l 500 –w 2000
This command will ping the IPNC continuously with a 500-character test message. Press [Ctrl]+C to
stop the ping.
Power Amplifier
Step 1 Connect the base station’s transmit port to the communication test set.
Step 2 Using the X=1400,19 command, generate data messages.
Step 3 Slowly increase the base station output power by turning the power control potentiometer
clockwise until the power noted in Step 2.
Do not exceed 40 watts output power, as this will reduce the life of the amplifier module. If the base
station uses a power amplifier, output power must be set to achieve power output specified for the
specific base station installation.
Step 4 Perform a close visual inspection of the base station paying close attention to
manufacturing related problems such as loose screws, solder practices, etc.