Specifications

CiM-550 IP Enabled Satellite Modem Rev. 2
Connector Pinouts CD/CIM550.IOM
112
Pin Generic Signal
Description
Direction EIA-422/
EIA 530
V.35 EIA-232 Circuit
No
17 Receive Clock A Modem to DTE RT A SCR A DD 115
23 External Carrier Off
(EIA-232 ‘1' or TTL ‘low’ )
DTE to Modem - - - -
24 Transmit Clock A DTE to Modem TT A SCTE A DA 113
Notes: 1
Receiver ready is an EIA-232-level control signal on a V.35 interface.
2
DO NOT connect signals to pins which are not shown - these pins are reserved for
use by the redundancy system.
3
‘B’ signal lines are not used for EIA-232 applications.
4
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.
10.2 ALARMS CONNECTOR - 15 PIN ‘D’ TYPE MALE
Table 10-2. Alarms Connector - 15 Pin ‘D’ Type Male
Pin Description
1 Ground
2 Receive AGC voltage
3 Receive Q sample (for constellation display)
4 Unit Fault Relay – Common
5 Unit Fault Relay – Normally Open
6 Transmit Traffic Relay - Normally Closed
7 Receive Traffic Relay - Common
8 Receive Traffic Relay - Normally Open
9 External Carrier Off input
10 ---- No Connection ----
11 Receive I sample (for constellation display)
12 Unit Fault Relay – Normally Closed
13 Transmit Traffic Relay – Common
14 Transmit Traffic Relay - Normally Open
15 Receive Traffic Relay - Normally Closed
Note: ‘Normally Open’ refers to the NON-FAIL state