Anritsu Series MS278XB operation manual Pin Name Description, Eoi

Instrument Overview Rear Panel and Connector Diagrams

Table 3-10. Index 6: IEEE 488.2 GPIB Connector Pinout Diagram

Pin	Name	Description
1-4	DIO 1 through DIO 4	Data Input/Output. Bits are HIGH when the data is logical 0 and LOW when the
		data is logical 1.
5	EOI	End or Identify. A low-true state indicates that the last byte of a multi byte
		message has been placed on the line.
		Data Valid. A low-true state indicates that the talker has (1) sensed that NRFD
6	DAV	is LOW, (2) placed a byte of data on the bus, and (3) waited an appropriate
		length of time for the data to settle.
7	NRFD	Not Ready For Data. A high-true state indicates that valid data has not yet
		been accepted by a listener.
8	NDAC	Not Data Accepted. A low-true state indicates that the current data byte has
		been accepted for internal processing by a listener.
9	IFC	Interface Clear. A low-true state places all bus instruments in a known state—
		such as, unaddressed to talk, unaddressed to listen, and service request idle.
10	SRQ	Service Request. A low-true state indicates that a bus instrument needs
		service from the controller.
		Attention. A low-true state enables the controller to respond to both its own
11	ATN	listen/talk address and to appropriate interface messages—such as, device
		clear and serial poll.
12	Shield	Ground Point.
13-16	DIO 5 through DIO 8	Data Input/Output. Bits are high with the data is logical 0 and LOW when the
		data is logical 1.
17	REN	Remote Enable. A low-true state enables bus instruments to be operated
		remotely, when addressed.
18 to	GND	Logic ground.
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MS278XB OM 3-43