5-14
Section 5: Module Configuration
Moseley SL9003Q
602-12016-01 Revision J
CONFIGURE
QAM Radio Launch
TX
Freq
QAM Radio TX Config
MHz
944.5000
2.
Use the cursors to change to the desired frequency. Press ENTER. The unit should
continue to indicate AFC LOCk (green) on the front-panel.
3.
The transmitter synthesizer AFC voltage will change depending on the frequency
programmed from the front panel. This voltage will typically be between 0.5 Vdc to
8.5 Vdc for the 944 MHz to 952 MHz band. Navigate the LCD screens to monitor the
AFC voltage as follows:
STATUS
QAM Radio Launch
TX
AFC
VDC
TX
%
LO
Xctr
%
50
50
4.5
NOTE
: Earlier generations of the SL9003Q required an internal adjustment on the
Transmit Module to center the AFC voltage. These units can be identified as follows:
Changing the frequency by 5 MHz will cause the TX AFC to loose lock. With these units the
Transmit Module was placed on an extender card to access the TX AFC adjustment.
Depending on the direction that the frequency was moved, the voltage might read either
0.00 or 9.99 VDC. While monitoring this voltage, you would adjust the TX AFC on the
Transmit Module (using a very small flat blade screwdriver) until the voltage reads 4.5 +/-
.25 VDC.
5.5.2 Changing Frequency — RX
The carrier frequency of the receiver can be changed via the front panel within a 20 MHz
range without internal adjustment or realignment.
1.
Power-up the unit and navigate the LCD screens as follows and press the <ENTER>
button.
Summary of Contents for Starlink SL9003Q
Page 86: ...5 22 Section 5 Module Configuration Moseley SL9003Q 602 12016 01 Revision J ...
Page 90: ...6 4 Section 6 Customer Service Moseley SL9003Q 602 12016 01 Revision J ...
Page 110: ...A 10 Appendix A Path Evaluation Information Moseley SL9003Q 602 12016 01 Revision J ...
Page 118: ...D 2 Appendix D Microvolt dBm Watt Conversion 50 ohms Moseley SL9003Q 602 12016 01 Revision J ...
