Comtech EF Data CDM-625 - Manual (Page 118)

CDM-625 Advanced Satellite Modem Revision 15
Front Panel Operation MN-CDM625
5–18
Mod=BPSK (B,Q) ()
FEC Rate=0.493 (Fixed)
5.2.1.3.6 CONFIG: Tx  Data
Tx Data Rate Tx Sub-Mux
()
Use the ◄ ► arrow keys to select Tx Data Rate or Tx Sub-Mux, and then press ENTER.
If Tx Sub-Mux is ON, this menu provides read-only IP Info Rate information on the bottom line:
Tx Data Rate Tx Sub-Mux
(IP Info Rate: 01200.340 kbps) ()
CONFIG: Tx  Tx Data  Tx Data Rate
Tx Data Rate = 01544.000 kbps
Data Invert=Off Clock Invert=Off ()
Use the top line to edit the Tx Data Rate. The bottom line permits selection of the Data Inversion
or the Clock Inversion features (added for compatibility with certain older equipment).
On the top line – To edit the Tx Data Rate, use the ◄ ► arrow keys to select the digit to edit,
and then use the ▲▼ arrow keys to change that digit. Press ENTER. when done.
The maximum limits for the Tx Data Rate are 18kbps to 25Mbps. The actual minimum and
maximum data rates are dependent on Framing mode, Interface type, Modulation type and FEC
Code Rate. If you change any of the higher-priority parameters – causing the data rate to
become invalid – the Data Rate adjusts automatically. The installed FAST option(s) also dictate
the upper range of data rate.
When configuring for D&I or IDR framing or for G.703 interface type, the ▲▼ arrow keys scroll
through only the available data rates. If you edit the data rate to 1920 kbps while in D&I
framing, a message appears to indicate that E1 Fixed Channel Mode is implemented.
When using G.703, three auxiliary rates (512, 1024 and 2048 kbps) are also available, indicated
by the word AUX appearing to the right of the decimal place (for example, 00512.AUX
kbps).
AUX G.703 Data Rate Connectors Reference: Sect. 3.3.2.5 G.703 IDI (Insert Data In),
DDO (Drop Data Out) Connectors in Chapter 3. REAR PANEL CONNECTOR PINOUTS