HP 34970A 2Read the specified port, To Read a Digital Input Port, To Read a Digital Input Port, 1Select the Digital Input port

Chapter 2 Front-Panel Overview

To Read a Digital Input PortTo Read a Digital Input Port

The multifunction module (HP 34907A) has two non-isolated 8-bit input/output ports which you can use for reading digital patterns.

You can read the live status of the bits on the port or you can configure a scan to include a digital read.

1Select the Digital Input port.

Select the slot containing the multifunction module and continue turning the knob until DIN is displayed (channel 01 or 02).

2Read the specified port.

You can specify whether you want to use binary or decimal format. Once you have selected the number base, it is used for all input or

output operations on the same port. To change the number base,

press the key and select USE BINARY or USE DECIMAL.

￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ' , 1 ￿ ￿ ￿		￿ ￿ Binary Display Shown	￿
Bit 7	Bit 0

The bit pattern read from the port will be displayed until you press another key, turn the knob, or until the display times out.

Note: To add a digital input channel to a scan list, press and select the DIO READ choice.

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