Northern Airborne Technology NPX138 - Manual (Page 29)

NPX138 Installation Approval Test Procedure
Rev. 1.10 Apr 19, 2004 Page 4 of 7
E NG-FORM: 634-0100.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
C. Determine if the image frequency for the VOR/ILS Nav falls within the range of
the NPX138 unit. If so, select two sets of frequencies that will cause the NPX138
to be set as close as possible to the image frequency. Choose one set in the
localizer frequency range, and one in the VOR frequency range. Record these
values in the spaces provided in the following chart. Modulate the NPX138
transmitter on the following frequencies for at least 20 seconds. Listen for any noise or
detected audio signals on the receiver audio; look for any movement of flags or needles
on the navigation display.
FREQUENCIES RESULTS
VOR/ILS #1 NPX138 PASS FAIL
108.000 162.0000
108.100 162.1500
Image:
Image:
FREQUENCIES RESULTS
VOR/ILS #2 NPX138 PASS FAIL
108.000 162.0000
108.100 162.1500
Image:
Image:
NOTES: