Instruction manual
MATRIX-2000™ REFERENCE MANUAL 
5 
MATRI
X
GND_ISO
RTS
CTS
RX
TX
USER INTERFACE 
Reference Ground 
Handshaking
Signals
TXD 
RXD 
SHIELD
7 
4 
5 
3 
2 
1 
Earth Ground Earth Ground 
Chassis
Figure 65 - RS232 Main Interface Connections 
The RTS and CTS signals control data transmission and synchronize the connected devices. 
Figure 66 - RS232 Control Signals 
If the RTS/CTS handshaking protocol is enabled, Matrix-2000™ activates the RTS output to 
indicate a message is to be transmitted. The receiving unit activates the CTS input to enable 
the transmission. 
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