GE RPT 301 user manual Electrical Connection, Communication connections

6 RPT 301 User Manual

2.3Electrical Connection

The electrical connector is a 10-way connector (MIL C26482) for serial, parallel and power connections.

Instrument Connector - Plug, Amphenol 62GB 12E12 - 10P

	Cable Connector		-	Socket, Amphenol 62GB 16F12 - 10S
Communication connections
When configured for:
	RS485				RS232
A	=	Power Supply -ve		A	=	Power Supply -ve
B	=	Power Supply +ve		B	=	Power Supply +ve
C	=	Chassis		C	=	Chassis
D	=	Data out +ve		D	=	RTS Input
E	=	Data out -ve		E	=	Data Out
F	=	Data In +ve		F	=	CTS Output
G	=	Data In -ve		G	=	Data In
H	=	Data Ground		H	=	Data Ground
J	=	Start-Up -ve		J	=	Start-Up -ve
K	=	Start-Up +ve		K	=	Start-Up +ve

Power supply

The instrument is internally fused with reverse polarity and overvoltage protection.

Note: The power input is transformer isolated from the logic circuits and the serial data link. The isolation voltage is 50V dc.

For continuous operation the ‘Start-up’ connections should be connected to the supply, make sure the polarity is correct and the current requirements are met.

When RS232 is used, the RTS line can be connected to the `Start-up' input and the RTS input on pin D so that the control computer can turn on the instrument.

K177 Issue No. 3