Belfort AWOS, Руководство по обслуживанию

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BELFORT
INSTRUMENT
Proprietary Information
c) The 1 KHz tone will start to play.
11) On the HP8920D, note the measured RF demodulation value. The value should be
between 65 and 95%. If the RF demodulation value is in range, then record the
value on the Commissioning / Annual Record Data Sheet. If the RF
demodulation is out of range, then the Unicom Radio should be replaced.
12)
Stop the “K” 1 Khz tone output to the Unicom radio by clicking the red X in
upper right corner of window.
13) Disconnect the HP8920D from the 50 ohm coax cable. Connect the coax cable to
the Input connector of the Bird Model 5010 Directional Power Sensor. Connect
the coax cable from the antenna to the Output connector on the Bird Model 5010.
Connect the Bird Model 5010 Interface cable to the Bird Model 5000-EX. Power
on the Bird Power Meter.
14) On the Bird Power Meter panel, select VSWR measurement.
15) On the FBO PC connected to the radio, initiate the 1 khz tone output on the audio
output lines as follows:
a) On PC navigate to: c:\Belfort AWOS folder;
b) Double click on: "1khz.wav";
c) The 1 KHz tone will start to play.
16) On the Bird Power Meter, note the measured VSWR value. The VSWR should
be <3.0:1. The optimal value is 1.0:1. If the VSWR is in range, then record the
value on the Commissioning / Annual Record Data Sheet. If the VSWR is out of
range, then the antenna cable should be inspected for damage or kinks, the 25w
6db attenuator should be checked that it is properly installed on the Unicom radio
RF output connector or the Unicom Radio should be replaced.
17)
Stop the “K” 1 Khz tone output to the Unicom radio by clicking the red X in
upper right corner of window.
18)
Power off the Unicom radio.
19) Disconnect the Bird Model 5010 Directional Power Sensor from the antenna and
Unicom radio‘s attenuator. Reconnect the antenna cable back to the attenuator
connected to the Unicom Radio.
20) Power on the Unicom radio.