Specifications

EPC-6A Hardware Reference
46
Keyboard Connector
The standard PS2 keyboard connector, available in the front panel, is a 6-pin mini-DIN
connector defined as follows:
Serial port connectors
The next table defines the DB-9 COM1serial port connector.
A second serial port, addressable at PC serial port COM2, COM2 exists in the form of a
10-pin header on the printed-circuit board near the bottom of the front panel. Pin 2 is the
pin closest to the front panel and the bottom. The header is defined as:
VMEbus Connectors
EPC-6A has a standard VMEbus P1 connector. It does not access the P1 pins +5VSTDBY,
SERCLK, and SERDAT.
Table A-3. Keyboard Pin-out
Pin Signal Pin Signal
1Data 4+5V
2 Not used 5 Clock
3 Ground 6 Not used
6
9
1
5
Table A-4. COM1 Connector
Pin Signal Pin Signal
1 Carrier detect 6 Data set ready
2 Receive data 7 Request to send
3 Transmit data 8 Clear to send
4 Data terminal ready 9 Ring indicator
5 Signal ground
Table A-5. COM2 Connector
Pin Signal Pin Signal
1 Carrier detect 6 Clear to send
2 Data set ready 7 Data terminal ready
3 Receive data 8 Ring indicator
4 Request to send 9 Signal ground
5 Transmit data unconnected
6
10
1
5