Comtech EF Data CDM-625 - Manual (Page 119)

CDM-625 Advanced Satellite Modem Revision 15
Front Panel Operation MN-CDM625
5–19
Note that in QDI (Quad D&I) mode, these data rates are read-only! The data rate is the sum of
the tributary rates for all ports. You must edit them via the QDI menu.
On the bottom line – To set the Data Invert or Clock Invert operation, for either, use the ▲▼
arrow keys to select On or Off. Press ENTER when done.
CONFIG: Tx  Tx Data  Tx Sub-Mux
Tx Sub-Mux = Off (Off, On)
Ratio = 1/9 (IP/Synchronous) ()
Use the ▲▼ arrow keys to select the desired ratio, and then press ENTER. There are a total of
34 ratio options available:
► 1/59 ► 1/39 ► 1/19 ► 1/9 ► 1/8 ► 1/7 ► 1/6 ► 1/5 ► 1/4
► 2/7 ► 1/3 ► 2/5 ► 3/7 ► 1/2 ► 3/5 ► 2/3 ► 3/4 ► 4/5
► 1/1 ► 5/4 ► 4/3 ► 3/2 ► 5/3 ► 2/1 ► 7/3 ► 5/2 ► 3/1
► 7/2 ► 4/1 ► 5/1 ► 6/1 ► 7/1 ► 8/1 ► 9/1
5.2.1.3.7 CONFIG: Tx  Symb (IP-ACM Mode Only)
Chapter 17. ADAPTIVE CODING AND MODULATION (ACM)
VersaFEC ACM requires the correct hardware module (PL-0000264) to be installed in
the unit; Version 1.4.0 (or higher) firmware; and the appropriate FAST code for the
maximum operating symbol rate.
TxSymbolRate = 01000.000 ksps (ACM Mode)
Data Invert=Off Clock Invert=Off ()
Take care to note that the use of IP-ACM is a fundamental departure from the way you would
typically configure the modem. When IP-ACM mode is active, the CONFIG: Tx menu changes the
Data option to Symb.
Use the ◄ ► arrow keys to select TxSymbolRate, Data Invert, or Clock Invert, and then press
ENTER.
On the top line – To edit the Tx Symbol Rate, use the ◄ ► arrow keys to first select the digit to
edit, and then use the ▲▼ arrow keys to change that digit. Press ENTER when done.
On the bottom line – To edit the Data Invert or Clock Invert: For either, use the ▲▼ arrow keys
to select On or Off, and then press ENTER.