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CDM-625 Advanced Satellite Modem
Front Panel Operation
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DoubleTalk Carrier-in-Carrier Module – If installed and enabled, the presence of CnC is
indicated with the appearance of the flashing CnC icon on the following front panel SELECT:
menus: CONFIG CnC; Test; Info; and Monitor.
Chapter 10. DOUBLETALK CARRIER-IN-CARRIER OPTION
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VersaFEC Card – If installed, the display also indicates VFEC.
Sect. 7.8 VersaFEC (Short-block LDPC)
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IP Packet Processor Card – If installed, the display also indicates PktP.
Chapter 18. IP PACKET PROCESSOR OPTION
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CDM-600/600L Emulation Indication – The CDM-625 serves as a 'drop-in' replacement
product for CDM-600 and CDM-600L modems. An emulation mode is provided to
accomplish this design intent, and is configurable via either the front panel (SELECT:
UtilityEm) or by remote control (remote command EMU=).
When emulating a CDM-600 or CDM-600L modem, the CDM-625 opening screen displays
the mode of operation, as per this example:
Comtech CDM-625
TPC,CnC,VFEC,PktP present
Note that, while emulating a CDM-600 or CDM-600L modem, the I/O responses (including
that of remote query EID?) replicate those of the emulated modem; further, the firmware
version number displayed on the opening screen, and the response from the SWR? remote
query reflects that of the emulated modem's firmware version number.
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Warm-up Delay Mode counter – When selecting the warm-up delay mode, the modem
turns the carrier off during the warm-up time and the countdown message "High-
Stability Ref Warming up : ### sec" displays on the bottom line of the screen
as follows:
Comtech CDM-625
High-Stability Ref warming up:
Sect. 7.6 Turbo Product Codec (Hardware Option)
Sect. 7.7 TPC and Low Density Parity Check (LDPC) coding
emulating a CDM-600
Ver2.2.6
emulating a CDM-600
009 sec
5–5
Revision 13
MN-CDM625
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