Comtech EF Data CDS-100 - Manual (Page 38)

CDS-100 Diversity Switch MN-CDS100
Switch Connectors and Pinouts Revision 1
3–6
3.2.1.3 ‘J3 | Control A’ Connector (DB-9F, Modem ‘A’)
The ‘J3 | Control A’ (Modem ‘A’) control connector is a 9-pin Type ‘D’ female interface. Pins 2, 3,
and 4 carry signals looped through the switch module from Modem ‘B’ to Modem ‘A’, while pins 6,
7, and 8 loop the same signals from Modem ‘A’ through to Modem ‘B’. The +12 VDC input, which
is diode OR’ed with the corresponding +12 VDC input from Modem ‘B’, powers the switch module.
Table 3-3. ‘J3 | Control A’ Connector Pin Assignments
Pin Signal Name Signal Function Direction
5 Ground Signal Ground ---
9 +12VDC +12 VDC In
4 /FAIL_OUT_B Modem ‘B’ Fault Indication Out
8 /FAIL_OUT_A Modem ‘A’ Fault Indication In
3 ONLINE_OUT_B Modem ‘B’ Online Indication Out
7 ONLINE_OUT_A Modem ‘A’ Online Indication In
2 AUX_SER_TX_B Modem ‘B’ Serial Tx Out
6 AUX_SER_TX_A Modem ‘A’ Serial Tx In
1 Ground Signal Ground ---
3.2.1.4 ‘J4 | Control B’ Connector (DB-9F, Modem ‘B’)
The ‘J4 | Control B’ (Modem ‘B’) control connector is a 9-pin Type ‘D’ female interface. Pins 2, 3,
and 4 carry signals looped through the switch module from Modem ‘A’ to Modem ‘B’, while pins 6,
7, and 8 loop the same signals from Modem ‘B’ through to Modem ‘A’. The +12 VDC input, which
is diode OR’ed with the corresponding +12 VDC input from Modem ‘A’, powers the switch module.
Table 3-4. ‘J4 | Control B’ Connector Pin Assignments
Pin Signal Name Signal Function Direction
5 Ground Signal Ground ---
9 +12VDC +12 VDC In
4 /FAIL_OUT_B Modem ‘A’ Fault Indication Out
8 /FAIL_OUT_A Modem ‘B’ Fault Indication In
3 ONLINE_OUT_B Modem ‘A’ Online Indication Out
7 ONLINE_OUT_A Modem ‘B’ Online Indication In
2 AUX_SER_TX_B Modem ‘A’ Serial Tx Out
6 AUX_SER_TX_A Modem ‘B’ Serial Tx In
1 Ground Signal Ground ---