Specifications

C-6
Reference Guide
Model No.
Running Head
Using the External Sync Port
The External Sync Port allows you to connect up to two external clocking sources from the
external timing clock panel to an INF-E Card.
The external sync port is provided on the SYNC jack of the card. Connect the external clock
sources to this jack, which accepts RS-485 signals. Figure C-5 shows the jack pin locations,
and Table C-4 lists the signal pinouts.
Figure C-5. RS485 External Sync Jack
Table C-4. RS485 External (SYNC) Jack Signal Pinouts
Pin Number Designation Description
1 R1 RX from Clock Source (Ext 1)
2 T1 RX from Clock Source (Ext 1)
7 R2 RX from Clock Source (Ext 2)
8 R2 RX from Clock Source (Ext 2)
Pin 1
Pin 8