User's Manual

Model 1150A DVOR
6-10 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.
l. If the levels are not the same, carefully adjust Transmitter 2 Sideband 1 forward power detector
potentiometer 1A4A6R2 located on the Sideband Generator Assembly.
m. Point and click the off button to turn off both VOR transmitters.
n. Move the 5 Watt plug-in element and the thru-line wattmeter body from the Sideband 1 output to the
Sideband 2 output at 1A10J25.
o. Turn on Tx 1. Select screen Transmitters>> Data>> Tx 1. Observe Sideband 2 power output.
p. If the levels are not the same, adjust the Sideband 2 forward power detector potentiometer 1A4A1R5
located on the Sideband Generator Assembly.
q. Point and click on Tx 2 Antenna button to change Transmitters.
r. Select screen Transmitters>> Data>> Tx 2. Observe Sideband 2 power output.
s. If the levels are not the same, carefully adjust Transmitter 2 Sideband 2 forward power detector
potentiometer 1A4A6R5 located on the Sideband Generator Assembly.
t. Point and click the off button to turn off both VOR transmitters.
u. Move the 5 Watt plug-in element and the thru-line wattmeter body from the Sideband 2 output to the
Sideband 3 output at 1A11J26.
v. Turn on the Transmitter. Select screen Transmitters>> Data>> Tx 1. Observe Sideband 3 power output.
w. If the levels are not the same, carefully adjust the Sideband 3 forward power detector potentiometer
1A4A2R2 located on the Sideband Generator Assembly.
x. Point and click on Tx 2 Antenna button to change Transmitters.
y. Select screen Transmitters>> Data>> Tx 2. Observe Sideband 3 power output.
z. If the levels are not the same, carefully adjust Transmitter 2 Sideband 3 forward power detector
potentiometer 1A4A6R2 located on the Sideband Generator Assembly.
aa. Point and click the off button to turn off both VOR transmitters
bb. Move the 5 Watt plug-in element and the thru-line wattmeter body from the Sideband 3 output to the
Sideband 4 output at 1A10J26.
cc. Turn on the Transmitter. Select screen Transmitters>> Data>> Tx 1. Observe Sideband 4 power output.
dd. If the levels are not the same, carefully adjust the Sideband 4 forward power detector potentiometer
1A4A2R5 located on the Sideband Generator Assembly.
ee. Point and click on Tx 2 Antenna button to change Transmitters.
ff. Select screen Transmitters>> Data>> Tx 2. Observe Sideband 4 power output.
gg. If the levels are not the same, carefully adjust Transmitter 2 Sideband 4 forward power detector
potentiometer 1A4A6R5 located on the Sideband Generator Assembly.
hh. Point and click the off button to turn off both VOR transmitters.
ii. Remove the wattmeter body from the Sideband 4 output at 1A10J26.
jj. Take the system out of BYPASS by pointing and clicking on the bypass button.
6.4.8
RMS Lithium Battery Check Procedure
a. Turn the VOR transmitter AC and DC breakers off.
b. Observing ESD precautions pull out the 1A3A6 RMS CCA and place on an ESD protective surface.
c. Verify JP1 is connected between pins 2-3 to enable battery backup.
d. Measure the DC voltage across the lithium battery B1.
e. Verify that the battery voltage is greater than or equal to 2.9 VDC at a room temperature of 20±5°C.
f. Replace the battery if necessary.
g. Place the RMS CCA into the rack and restore the VOR to the NORMAL STATE.
6.4.9
Replacing RMS CPU (1A3A6) CCA
a. On the PMDT Select System>> Configuration Save. Select or create a distinctive filename to save the
current system configuration and click save.
b. Turn off AC/DC power on VOR front panel.
c. Observing ESD precautions, disconnect the front connector and pull the RMS CCA (1A3A6) forward until
it is clear of the transmitter cabinet
d. Insert the new RMS CCA into the cabinet and seat securely into backplane connector. Reconnect the front
card edge connector.