Chapter 4 Features and Functions

Digital Input Operations

Sctxt”: After selecting the port, press to read the bit pattern (the least significant bit is on the right). The bit pattern read from the port will be displayed until you press another key, turn the knob, or until the display times out.

To add a digital read to a scan list, choose the following item.

DIO READ

From the front-panel only, you can specify whether you want to use binary or decimal format.

USE DECIMAL , USE BINARY

exx Vxytvx bxt”: From the remote interface, you can read an 8-bit byte from one port or a 16-bit word from both ports using the following commands. If you are going to read both ports simultaneously, you must send the command to port 01 and neither port can be included in the scan list.

SENS:DIG:DATA:BYTE?

(@302)

extw 9

SENS:DIG:DATA:WORD?

(@301)

extw u xx

To redefine the scan list to include a digital read (8-bit read only), send the following command.

CONF:DIG:BYTE (@302)

Mww 79 xtw t

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HP 34970A manual Extw u, Mww 79 xtw t