Agilent Technologies 4294A Service Manual download pdf (Page 128)

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128 Chapter 9

Communication with External Equipment (Using the I/O Ports)

Using the I/O Ports

To read out data from each input port (C to E) to the controller, use the following

commands.

To use ports C, D, and E as input ports, use the following commands to set ports C and D as

input ports in advance.

• “CIN” on page 278

• “DIN” on page 297

To select positive logic or negative logic for input/output signals of ports, use the following

commands. You can save this setting into an instrument setup file using the save function.

• “NEGL” on page 362

• “POSL” on page 403

NOTE The above commands, used to change the positive logic/negative logic setting, are

available for the following ports.

• Output ports A to H

• Input ports C to D

• PASS/FAIL signal

To make the setting so that OUTPUT1 and OUTPUT2 goes HIGH (or LOW) when a pulse

is inputted into INPUT1, use the following commands.

• “OUT1ENV{H|L}” on page 367

• “OUT2ENV{H|L}” on page 368

To set OUTPUT1 and OUTPUT2 to HIGH (or LOW), use the following commands.

• “OUT1{H|L}” on page 367

• “OUT2{H|L}” on page 368

To check that any pulses have been inputted to INPUT1, use the following command.

• “INPT?” on page 319

GPIB command Instrument BASIC command Description

“OUTPINPCIO?” on page 381 “READIO(16,2)” Reads out 4-bit width data from port C.

“OUTPINPDIO?” on page 382 “READIO(16,3)” Reads out 4-bit width data from port D.

“OUTPINPEIO?” on page 382 “READIO(16,4)” Reads out 8-bit width data from port E.

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