User Manual

SECTION 2: FACTORY TEST PROCEDURE
IP4HPVGPS-MRFCCRpt.doc Page 14
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Receive Data
Perform the following steps to verify the receive data performance:
Step 1 Using the DOS ping command on the PC connected to the radio, ping the network controller
to generate uplink and downlink data messages. The following command will generate one
Hundred 500 character messages:
>;Ping 192.168.3.3 -n 100 -l 500
Step 2 Observe the data quality readings on the IPMessage window of the PC connected to the
radio using the V (for Verbose) command in the IPMessage program. With the mobile radio's
antenna connected to receiver 1, verify the received data quality readings are consistently
248s. Data quality readings should also be verified at the base station using the V command
on the Hyperterminal window.
Step 3 Verify receiver 2 data quality readings are also consistently 240 to 248s by changing the
antenna from receiver 1 port to receiver 2 port. In this manner both uplink and downlink data
quality can be verified. Record this data on the Test Data Sheet.
Final Test
A final test must
be performed prior to shipping the IP4HPV mobile radio to the customer. This final test
will verify that the timing characteristics are correct and that both transmit and receive data quality
readings are consistently high.
Perform the following steps for the final test:
Step 1 Attach the 40dB 100-Watt power attenuator to the transmit port of the radio.
Step 2 Program the radio for full power operation. The tx power level setting can be found in the
radio's Test Data Sheet.
The setting must not to exceed 40 Watts.
Step 3 Attach a digital scope to the base station as described in section the next section, Uplink
Hardware Timing Verification. Using the x=2000,19 command (which will cause the radio
to transmit 19 2000 character messages), verify the following:
Transmit frequency of radio is adjusted for minimum frequency error of +/- 100 Hz.
The x=2000,19 command will generate different messages with differing DC components.
Each message will slightly slew the frequency off from the center frequency). Be careful to
closely monitor the variation in transmit frequency due to these different messages and
ensure that on average the transit frequency error has been minimized to within +/-100 Hz.
This indicates that some of these test messages will be slightly high in frequency, some
messages will be slightly low in frequency, and some messages will be right on frequency.
Step 4 Verify the transmit deviation is 4.9 kHz