MCBH-6-MP pinout - standard instruments, Q, Q | plus

RBR standard instruments L3 and RBRquartz³ Q with connectorised battery end-caps (BEC12 and BEC13), as well as RBRquartz³ Q | plus,  have MCBH-6-MP connectors, which can be used for connecting via USB, RS-232, or RS-485 cables, depending on the wiring selected at the time of purchase.

	Pin No.	USB	RS-232	RS-485
	1	Ground
	2	Power: 4.5V to 30V
	3	N/C	From the instrument (Tx)	From the instrument (Tx-)
	4	Power: 5V	Into the instrument (Rx)	Into the instrument (Rx+)
	5	D-	N/C	Into the instrument (Rx-)
	6	D+	N/C	From the instrument (Tx+)

Connectorised battery end-caps (BEC12 and BEC13)