Comtech EF Data CDM-760 - CONFIG: Tx) ACM (Adaptive Coding and Modulation)

Front Panel Operation Revision 4
CDM-760 Advanced High-Speed Trunking Modem MN-CDM760
6–19
Valid settings are:
IF Frequency
Total Output Power Range of CDM-760
Minimum
Maximum
Step Size
70 / 140 MHz (50-180 MHz in 100 Hz Steps)
0 dBm
-25 dBm
0.1 dBm
L-Band (950-2150 MHz in 100 Hz steps)
0 dBm
-40 dBm
0.1 dBm
(CONFIG: Tx) Power  AUPC  Range
The Range defines how much the modem is permitted to increase the Tx output level
beyond the Nominal level while under AUPC control. Set the Range to accommodate
any output power level the modem allows for under its current mode of operation, on
the condition that the Nominal + Range sum does not exceed the total output power
range of the modem.
Use the  arrow keys to set the value. Press ENTER. Valid settings are:
Range
Step Size
Minimum
Maximum
0.00 dB
40.0 dB
0.1 dB
6.2.2.2.5 (CONFIG: Tx) ACM (Adaptive Coding and Modulation)
Appendix G. ADAPTIVE CODING AND MODULATION (ACM) OPTION
ACM Config: Min/Max-ModCod Unlock-Action
Target-EsNo-Margin Degradation ()
Use the   arrow keys to select a parameter. Press ENTER.
(CONFIG: Tx) ACM ConfigMin/Max-ModCod
To force the system to run at a fixed ModCod, set the Min and Max ModCod to equal
values.
CAUTION
Other FAST options that are installed for Modulation and Symbol Rate may limit the
Max ModCod value.
Min Modcod: QPSK 1/2
Max Modcod: 32APSK 9/10
Set the ModCod range to configure the modem’s transmit capability.
Use the   arrow keys to select Min Modcod (top line) or Max Modcod (bottom line). Press
ENTER. Then, use the  arrow keys to set the ModCod. Press ENTER.