User's Manual

F32700N25.doc Page 19
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Final Test
A final test must be performed prior to shipping the F32700N25 Fixed 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 20dB 25Watt 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 5 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=1400,19
command (which will cause the radio to transmit 19, 1400 character
messages), verify the following:
Transmit frequency of radio is adjusted for minimum frequency error of <+/-
100 Hz.
The x=1400,19 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
Step 5 Verify the timing characteristics are identical to the plots in the next section,
Uplink Hardware Timing Verification.
Step 6 At the base station monitor PC, verify that all the data quality readings are
240 and higher.
Step 7 Move the scope probes to monitor the timing at the Fixed Radio as described
in Downlink Hardware Timing Verification. Generate test messages by
pinging the IPNC from the PC attached to the radio. The following command