Installation manual

Windsor Installation Manual - Issue C

RS 232 Interface PCB

The Windsor RS232 Interface board connects to the communications port, CON 6, of the

main PCB. The function of the RS232 Interface board is to convert the TTL voltage levels on

the main PCB to the RS232 voltage levels. An RS232 Interface board will be required if you

are connecting Windsor to a PC, modem, PAKNET or X25 pad. It is not required if you are

connecting to SmartComm or Pacom. When connecting to a PC you must use a crossed

cable (RX-TX and CTS-RTS).

There are 2 types of RS232 Interface board used in Windsor. The Windsor mark 1 RS232

Interface board is identified as PC922 and has a 12 way connection to the main PCB and the

Windsor 500 RS232 Interface board is identified as either 22-00102 or PC841 and has a 15

way connection to the main PCB. Both types are fitted with a 25 male way D-type connector.

9 way D-Type 25 way D-Type Windsor Mark 2 - CON6 Windsor Mark 1 - CON6

1 +12V 1 +12V

3 2 2 TXD 2 TXD

2 3 3 RXD 3 RXD

7 4 4 RTS 4 RTS

8 5 5 CTS 5 CTS

4 20 6 DTR 6 DTR

6 6 7 DSR 7 DSR

1 8 8 DCD 8 DCD

9 22 9 RI 9 RI

10 No Connection 10 5v

11 No Connection 11 0v

12 +5v 12 No Connection

13 No Connection

5 7 14 0v

15 No Connection

Windsor RS232 Interface to PC (9 way D-Type) connections

Windsor PC

2 2