Japan Radio Co. JMR-7230-S3, Инструкция по эксплуатации

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21-41 Section 21 Maintenance & Inspection
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4
Check the amount of attenuation in the dialog box.
Benchmarks for the amount of attenuation are as follows:
Attention Value of Transmitter:
At normal: -6.9 dB to +2.0 dB
At degrading performances: -15.0 dB to -7.0 dB
Attention Value of Receiver:
At normal: -2.9 dB to +3.5 dB
At degrading performances: -15.0 dB to -3.0 dB
• When confirming the attenuation value of the transmitter, after opening the dialog
box, wait for one minute, and then read its value.
• If the attenuation value of the transmitter is -7dB or lesser, or the receiver’s
attenuation indicator is -3dB or lesser, it is indicates that performances of the
transmitter/receiver unit are degrading.
In this case, inspection by the specialized service personnel is required. Contact
our dealer, the nearest service representative or JRC sales.
21.4.8.2 MON Check (SSR)
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Click on the [Menu] button on the left Toolbar.
The menu is displayed.
2
Click on the [Maintenance] - [Selftest] - [MON Check (SSR)] button on the menu.
[1] [X] button
Click on this button to close the [Diagnosis] dialog box.
[2] [Transmitter System]
The amount of attenuation at the radar transmitter is displayed in a numerical value [dB].
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(2)
(3)