Rs232 Interface Signals - Vetronix MTS 3100 Mastertech Operator's Manual

Understanding RS232 Communications

RS232 INTERFACE SIGNALS

PIN
SIGNAL NAME
NUMBER
1 NOT USED
2 DTR
3 CARRIER DETECT
4 CTS
5 TRANSMIT
6 RECEIVE
7 RTS
8 SIGNAL GROUND
9 DSR
10 NOT USED
a. CTS and RTS are connected together inside the tester, but are not used as handshake signals by the tester.
PIN 1
SIGNAL LEVELS
LOGIC "1" - 12 V 1 START BIT
LOGIC "0" +12 V 8 DATA BITS
TABLE A-1. RS232 Interface Specifications
Page A-2
INPUT/OUTPUT
OUTPUT
INPUT
a
OUTPUT
INPUT
a
INPUT
RJ45 10-Pin Modular Phone Connector
FIGURE A-1. RS232 Socket on Tester
DATA FORMAT
1 START BIT
8 DATA BITS
1 STOP BIT
NO PARITY
CONNECT TO:
DSR
CARRIER DETECT
RTS
RECEIVE
TRANSMIT
CTS
SIGNAL GROUND
DTR
PIN 10
BAUD RATES
SOFTWARE
SELECTABLE:
1200 bps
2400 bps
4800 bps
9600 bps
19200 bps
38400 bps
57600 bps
115200 bps
Mastertech 3100 Operator's Manual