Datascope Accutorr Plus Service Manual page 89

VBULK
CSTAT*
NCALL*
The pin assignments for the 9 pin `D' connector are as follows:
PIN INPUT/OUTPUT
1 Output
2 Input
3 Output
Output
4
Output
5
6 Output
Input
7
8 Output
9 Output
For Standard DIAP connection use pins 2,3,5,7&8 for 5 wire communication and use
pins 2,3&5 for 3 wire communication. For connection to a PC the cabling must be Null
Modem or:
Signal
TXD
RXD
Ground
RTS
CTS
Accutorr Plus Service Manual
Chapter 2 - Theory of Operation
DC/DC
CONVERTER
(-01)
TD
RTS*
RS232
RD
XCEIVER
CTS*
NCALL*
CSTAT*
(-02)
TD
RS485
XCEIVER
RD
DESCRIPTION
12VDC @ 100mA
RS-232
RS-232
± 10 Vdc min.
Ground
Ground
RS-232
RS-232
Ground
Accutorr Plus Pin
3
2
5
7
8
12VDC
TXD
RTS
RXD
CTS
NCALL
PROTECTION
ARRAY
TXD
RXD
NAME
TR_PWR
EXT_RXD
EXT_TXD
Nurse_call
DGND
DGND
EXT_RTS
EXT_CTS
DGND
PC pin
2
3
5
8
7
Revised 12/20/00
Figure 2-8
Communication Board
Block Diagram
2-27