User's Manual

Model 1150A DVOR
3-60 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.
3.6.8.7 Controlling the Transmitter via the PMDT
Transmitter parameters are adjusted using the Nominal Screen (Figure 3-50) and the Transmitter Offsets and Scale
factors Screen (Figure 3-51). Refer to these screens for the following paragraphs.
3.6.8.7.1
General Transmitter Control
With Transmitter #1 on the antenna, configure the Transmitter>>Configuration>>Nominal settings for the desired
operation as measured by the Monitor. Transfer to Transmitter #2 and adjust the
Transmitter>>Configuration>>Offsets And Scale Factors for Tx #2 offset to obtain the same desired operation for
TX #2 as measured by the Monitor. During Flight Check adjust the Tx #1 and Tx #2 offsets and scale factors as
necessary when directed by Flight Check to obtain this signal in space for each Transmitter.
3.6.8.7.2
Change the Azimuth Index
To affect both Transmitter #1 and Transmitter #2, select Transmitters >> Configuration >> Nominal. Adjust the
Azimuth Index by selecting the parameter with the mouse then either enter the value or use the spin controls. Press
the Apply button (or the “F7” key) to apply the change.
To affect only one transmitter, select Transmitters >> Configuration >> Offsets and Scale Factors screen. Adjust the
Transmitter 1 (or 2, as desired) Az Angle Offset by selecting the parameter with the mouse, then either enter the
offset value or use the spin controls. Press the Apply button (or the “F7” key) to apply the change.
3.6.8.7.3
Change the CSB Output Power
To affect both Transmitter #1 and Transmitter #2, select Transmitters >> Configuration >> Nominal. Adjust the
CSB power output level by selecting the CSB Output Power parameter with the mouse then either enter the value or
use the spin controls. Press the Apply button (or the “F7” key) to apply the change. The value entered is modified by
the Transmitters >> Configuration >> Offsets and Scale Factors >> Output Power value. A value of 100% in the
Output Power Scale along with a Nominal Setting of 125 Watts yields approximately 125 Watts. Note that the
power change in the Nominal Screen also affects the Sideband RF Level proportionally so that the sideband
modulation level stays nearly the same for Carrier output adjustments.
To affect only one transmitter (so that both transmitters provide the same level), select Transmitters >>
Configuration >> Offsets and Scale Factors screen. Adjust the Transmitter 1 (or 2, as desired) Power Output level by
selecting the Output Power Scale parameter with the mouse then either enter the percentage value or use the spin
controls. Press the Apply button (or the “F7” key) to apply the change.
3.6.8.7.4
Change the Voice Depth of Modulation
To affect both Transmitter #1 and Transmitter #2, select Transmitters >> Configuration >> Nominal. Adjust the
Voice Depth of Modulation by selecting the Voice Modulation parameter with the mouse then either enter the value
or use the spin controls. Press the Apply button (or the “F7” key) to apply the change.
To affect only one transmitter, select Transmitters >> Configuration >> Offsets and Scale Factors screen Adjust the
Transmitter 1 (or 2, as desired) Voice Modulation Scale Percent by selecting the parameter with the mouse, then
either enter the percentage value or use the spin controls. Press the Apply button (or the “F7” key) to apply the
change.
3.6.8.7.5
Change the Identification Depth of Modulation
To affect both Transmitter #1 and Transmitter #2, select Transmitters >> Configuration>>Nominal. Adjust the ident
depth of modulation level by selecting the Ident Mod Level parameter with the mouse then either enter the value or
use the spin controls. Press the Apply button (or the “F7” key) to apply the change.
To affect only one transmitter, select Transmitters >> Configuration >> Transmitter 1 (or 2, as desired) Offsets and
Scale Factors screen. Adjust the ident modulation level by selecting the Ident Level Scale parameter with the mouse
then either enter the percentage value or use the spin controls. Press the Apply button (or the (“F7” key) to apply the
change.