Config: Tx) Acm (Adaptive Coding And Modulation) - Comtech EF Data CDM-760 Installation And Operation Manual

Advanced high-speed trunking modem
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Front Panel Operation
CDM-760 Advanced High-Speed Trunking Modem
Valid settings are:
70 / 140 MHz (50-180 MHz in 100 Hz Steps)
L-Band (950-2150 MHz in 100 Hz steps)
(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:
Minimum
0.00 dB

6.2.2.2.5 (CONFIG: Tx) ACM (Adaptive Coding and Modulation)

Appendix G. ADAPTIVE CODING
ACM Config: Min/Max-ModCod
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.
IF Frequency
Range
Maximum
40.0 dB
MODULATION (ACM) OPTION
AND
6–19
Total Output Power Range of CDM-760
Minimum
Maximum
0 dBm
-25 dBm
0 dBm
-40 dBm
Step Size
0.1 dB
Unlock-Action
()
Revision 4
MN-CDM760
Step Size
0.1 dBm
0.1 dBm

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