User's Manual

Model 1150A DVOR
Rev. - November, 2008
This document contains proprietary information and such information may not be disclosed
to others for any purposes without written permission from SELEX Sistemi Integrati Inc.
6-11
e. T
urn on AC/DC power on VOR front panel.
f. Place the VOR in LOCAL mode. Select System>> Configuration Load, and select the Filename saved in
Step a.
g. Select RMS>> Config Backup.
h. Set the current date and time by selecting RMS>> Commands>> Set Time and Date, [enter].
6.4.10
Update of DVOR Software
NOTE
During the product life cycle software updates may become available for the VOR product
in service. The RMS, Monitor and Audio Generator software is updated through the PMDT
port using a SELEX-SI software product called “Flash loader” Please refer to the
installation instructions accompanying the software update service bulletin for detailed
software upgrade procedures.
a. On the PMDT Select System>> Configuration Save. Select or create a distinctive filename to save the
current system configuration and click save.
b. Perform the software update per the instruction provided.
c. Place the VOR in LOCAL mode. Select System>> Configuration Load, and select the Filename saved in
Step a.
d. Select RMS>> Config Backup.
e. Set the current date and time by selecting RMS>> Commands>> Set Time and Date, [enter].
6.4.11
Changing the Station Rotation (Azimuth)
This step may be requested during a flight inspection of the VOR station.
a. Select Transmitters>> Configuration>> Offsets. Adjust the Azimuth angle offset for Transmitter 1 and/or
Transmitter 2.
b. Enter a more positive number for clockwise rotation or a more negative number for counterclockwise
rotation. The allowable entry is ±180 degrees in 0.01 degree increments.
6.4.12
Changing the Monitoring Offsets
This procedure is required after commissioning flight check to make the monitors agree with flight inspection
results.
a. Turn on Transmitter 1 by clicking on Tx1 on the side bar
b. Select Monitors>> Data >> Integrity and view Data.
c. Select Monitors>> Configuration>> Offsets and Scale Factors. Enter the new azimuth offset for Monitor 1
and Monitor 2 under the Field Detector column.
d. Select Monitors>> Data>> Integrity data. Verify that the Azimuth value displayed is correct.
e. Compute the 30 Hz Modulation correct factors by the formula:
.
Re
0.30
OffsetCurrentX
adingCurrent
f. Select Monitors>> Configuration>> Offsets and Scale factors and read the current 30 Hz modulation offset
and apply the formula if step e.
g. Enter the new offset value for Monitor 1 and Monitor 2, 30 Hz modulation under the Field Detector
Column.
h. Repeat steps e, f, and g for 9960 Hz Modulator and 9960 Hz deviation ratio.
i. Compute the field intensity offset by reading the field intensity value in Monitors>> Data>> Integrity data
and subtracting the reading from 0.0.
j. For values that are greater than 1 dB adjust the Monitor attenuation in Monitor>> Configuration>>Alarm
Limits.