Config: Tx  Symb (Ip-Acm Or V2-Acm Modes Only) - Comtech EF Data CDM-425 Installation And Operation Manual

Note that these data rates are read-only in QDI (Quad D&I) mode! The data rate is the sum of
the tributary rates for all ports.
On the bottom line – You may set either Data Invert or Clock Invert operation by using the
▲▼ arrow keys to select On or Off. Press ENTER.
CONFIG: Tx  Tx Data  Tx Sub-Mux
Tx Sub-Mux: Off (Off, On)
Ratio =
Use the ▲▼ arrow keys to select the desired ratio. Press ENTER. There are 34 ratio selections
available:
► 1/59 ► 1/39
► 2/7 ► 1/3
► 1/1 ► 5/4
► 7/2 ► 4/1
6.2.1.3.7
Appendix K. V
MODULATION (ACM) OPTION
VersaFEC ACM or VerseFEC-2 ACM modes require the appropriate FAST codes
for the maximum operating symbol rate.
TxSymbolRate = 01000.000 ksps (ACM Mode)
Data Invert=Off Clock Invert=Off ()
It is important that you understand that the use of IP-ACM or V2-ACM modes represent
fundamental departures from the way you would typically configure the modem. When either
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. Press ENTER.
On the top line – Edit the Tx Symbol Rate by using the ◄ ►arrow keys to select the digit to edit.
Then, use the ▲▼ arrow keys to change that digit. Press ENTER.
On the bottom line – Set the Data Invert or Clock Invert operations by using the ▲▼ arrow
keys to select either as On or Off. Press ENTER.
Front Panel Operation
1/9 (IP/Synchronous)
► 1/19 ► 1/9
► 2/5 ► 3/7
► 4/3 ► 3/2
► 5/1 ► 6/1
CONFIG: Tx  Symb (IP-ACM or V2-ACM Modes Only)
®
FEC / V
ERSA ERSA
CDM-425 Advanced Satellite Modem
► 1/8 ► 1/7
► 1/2 ► 3/5
► 5/3 ► 2/1
► 7/1 ► 8/1
FEC-2 ACM ADAPTIVE CODING
6–21
Revision 0
()
► 1/6 ► 1/5 ► 1/4
► 2/3 ► 3/4 ► 4/5
► 7/3 ► 5/2 ► 3/1
► 9/1
AND
MN-CDM-425