Hssi Operation Via The Cic-60 Interface Adapter Module; Figure 3-2. Cic-60 Interface Adapter Module (Cefd P/N Pl-0000307) - Comtech EF Data CDM-625A Installation And Operation Manual

CDM-625A Advanced Satellite Modem
Rear Panel Connectors and Pinouts
When the rear-panel LED marked "1:N Active!" is ON, the signals shown highlighted are no longer available. Furthermore,
2.
pins 6, 18, 20, 21, 22, 23 and 25 are reserved for use by the 1:N system. DO NOT connect signals to any of these pins in
this mode. Certain pins have DC voltages present that may damage equipment other than a Comtech EF Data redundancy
switch.
3. For X.21 operation, use the EIA-422 pins, but ignore Receive Clock if the Modem is DTE, and ignore Transmit clocks if the
Modem is DCE.
4. For IDR operation using G.703, this primary interface becomes the 8 kbps EIA-422 overhead channel.
3.2.2.1.1

HSSI Operation via the CIC-60 Interface Adapter Module

For HSSI operation (Tx, Rx, or both), the optional CIC-60 Interface Adapter Module (Figure 3-2)
may be purchased from Comtech EF Data to adapt the Data Interface 25-pin Type 'D' female
connection to a standard 50-pin Type 'HD' HSSI (SCSI-II) female connection.
See Table 3-3 for the pinouts for the HSSI/EIA-613 side of the CIC-60 Adapter Module.
The modem must first be configured for the appropriate HSSI operation, via the
CDM-625A Front Panel, before using this adapter:
SELECT: Configure  Mode 
(Select HSSI for both Tx Mode / Interface and Rx Mode / Interface)
CIC-60 Interface Adapter Module
(Modem Interface Side)

Figure 3-2. CIC-60 Interface Adapter Module (CEFD P/N PL-0000307)

Chapter 6. FRONT PANEL OPERATION
3–5
CIC-60 Interface Adapter Module
(Installed, HSSI Interface Side Shown)
Revision 0
MN-CDM625A