Dynamic Predistortion (Dpd) - Comtech EF Data CDM-760 Installation And Operation Manual

Serial Interface Operation
CDM-760 Advanced High-Speed Trunking Modem
8.5.15

Dynamic Predistortion (DPD)

Controller-to-Target
Instruction Code and
Qualifier
Parameter Type
Command Query
Dynamic PDM= PDM?
Predistortion
(DPD) Mode
Arguments for
Description of Arguments
Command or
(Note that all arguments are ASCII numeric codes from 48 to 57)
Query
1 byte, value of 0 Command or Query.
or 1 Sets DPD mode in the form x, where:
0=Off
1=Local
2= Remote
NOTES:
1) DPD may be enabled only if the optional plug-in hardware CnC card has been installed AND a DPD FAST option is
unlocked.
2) CnC mode must be OFF, and the Tx symbol rate set within the allowable range. See DPD spec for minimum Tx
symbol rate.
3) Maximum Tx symbol rate is determined by constellation type and DPD Mode setting, and/or installed FAST options.
(Read EID to decode the installed options for the modem.)
8–47
Revision 3
MN-CDM760
Target-to-Controller
(see Description of Arguments)
Response to Response to
Command Query
PDM= PDM=x
PDM?
PDM*
PDM#