Comtech EF Data CDM-600/600L - Manual (Page 99)

CDM-600/600L Open Network Satellite Modem Revision 3
Front Panel Operation MN/CDM600L.IOM
5–23
5.4.6.3 CONFIG: D&I
Æ DROP or INSERT CHAN/TS (Channel Timeslots)
DRP-CH: 1 2 3 4
TS: 01 02 03 04
INS-CH: 1 2 3 4
TS: 01 02 03 04
For both the Drop-Type and Insert-Type Channel Timeslots, select the Channel to edit using the
[
←][→] arrow keys, then edit the timeslot value using the [↑][↓] arrow keys. Press [ENT] when
done.
The number of available Channels depends on the data rate. If the data rate is 1920 kbps, then only
the E1 formats are available and the Chan/TS menus are disabled. This is the ‘Fixed Channel
Mode’ where all timeslots are allocated in order.
If the framing is D&I and Drop/Insert Type is E1-CAS, Timeslot 16 is completely used for CAS
signalling and therefore may not be allocated by the user for traffic data.
5.4.7 CONFIG: FREQ-REF (CDM-600L ONLY)
REFERENCE CLOCK = INTERNAL
(INTERNAL, 1, 2, 5, 10, or 20 MHz)
Select either an Internal 10 MHz Reference or a 1, 2, 5, 10, or 20 MHz External Reference using
the [
↑][↓] arrow keys. Press [ENT] when done.
5.4.8 CONFIG: EDMAC
EDMAC MODE = MASTER (IDLE/MASTER/SLAVE)
EDMAC ADDRESS = XXXX
EDMAC is a Comtech-proprietary framing which permits communication access to the distant-
end modem. For further information, refer to Chapter 9. EDMAC CHANNEL.
Note the following:
• An EDMAC Master is a modem which is local to the M&C computer, and which passes
messages, via the overhead, to a distant-end modem. The Master address will always end in
0.
• An EDMAC Slave is a modem that is not local to the M&C computer. It is at the ‘distant-
end’ of a satellite link. The Slave EDMAC address will always end in 1. When configured
as a Slave, re-configuration is expected to be via the EDMAC link, and hence is not
permitted via the front panel or via serial remote control.
Select the mode using the [ ↑][↓] arrow keys. If the mode is Master or Slave, the bottom line will
show an address. Use the [ ←][→] arrow keys to select the character to edit, then the [↑][↓]
arrow keys to edit the value. Press [ENT] when done.