Sanden SN3500, Руководство по установке

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Appendix A: Post-Installation Procedures
82005-IM-K Sandel SN3500 Installation Manual Page 7-11
e) Check the course pointer at 30 degree increments and verify calibration.
7.1.5.2 Composite LOC Calibration Procedure
The following procedure applies to SN3500 installations that have been
configured to use the SN3500 internal localizer converter.
LOC DV COMP
This procedure does not apply for any other LOC DV setting such as
Arinc 429 or Analog from an external LOC converter.
Ramp or Bench Test:
Perform the following procedure using the respective aircraft receiver. This test may
be performed with a ramp test set, or may be performed on the bench with a signal
generator at nominal RF signal level (25uV or greater).
1. On the SN3500 NAV maintenance page, select LOC DV and
change to COMP to select Composite Localizer.
2. Select GAIN.
3. Set 0 DDM (STD) on the test set, and tune the receiver to match
the LOC frequency on the test set..
4. Adjust the SN4500 GAIN value so the average value of LOC
AMPL reads 100.0 +/- 2.5.
5. Exit the SN3500 maintenance page to the normal pilot’s LOC
display.
6. On the test set remove both 90Hz and 150Hz simultaneously and
verify the SN3500 display flags within 2 seconds.
7. On the test set select .155 DDM Left and verify that removing
either tone individually will flag the SN3500 display within 5
seconds.
8. On the test set select .155 DDM Right and verify that removing
either tone individually will flag the SN3500 display within 5
seconds.
Perform any other LOC performance tests desired.