Nautel VS1, Руководство по эксплуатации и обслуживанию

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VS1 Operations and Maintenance Manual Routine maintenance
Page 3-4 Issue 3.1 2013-10-01
Performing on-air checks
You should check the on-air quality of the transmitter’s signal periodically. This check can be done
locally at the transmitter site, or remotely from another location in the transmitter’s coverage area.
Interval
Every 12 months, or as required by law.
Parts and tools
• High-quality receiver, compatible with the modulation scheme used on the transmitter.
Procedure
1. Monitor the transmitter signal to identify any problems:
– Use a high quality receiver to monitor audio quality.
– Take a portable receiver to different locations in your coverage areas to identify any
problems with the antenna pattern or areas of localized interference.
2. Obtain the Proof of Performance document that was completed during factory testing and
provided with the transmitter. Use the front panel UI or the remote AUI to compare current
transmitter meter readings with those in the
Proof of Performance document and in Table 3.1 on
page 3-5 , which shows expected meter readings at 88 MHz, 98 MHz and 108 MHz. When
comparing data, use the frequency column closest to your operating frequency.
Note:
Nautel completes the Proof of Performance document with the transmitter operating at 98 MHz,
terminated into a precision 50 ohm load. Measurements made at other operating frequencies may not
yield the same readings. The data in
Table 3.1 on page 3-5 is an example of measured meter values
and is provided as a troubleshooting aid. Your front panel meter readings may not be exactly the
same as shown, but if an out-of-tolerance condition exists, an alarm will be displayed.