HP 34970A ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ' 2 8 7 ￿￿￿￿￿ ￿Binary Display Shown, ￿￿￿￿￿￿ ￿ ￿￿￿￿￿￿￿￿￿'287￿￿￿ Decimal Display Shown, 3Edit the bit pattern, 2Enter the bit pattern editor

Chapter 2 Front-Panel Overview

To Write to a Digital Output Port

To Write to a Digital Output Port

The multifunction module (HP 34907A) has two non-isolated 8-bit	2
input/output ports which you can use for outputting digital patterns.

1Select the Digital Output port.

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

2Enter the bit pattern editor.

Notice that the port is now converted to an output port (DOUT).

￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ' 2 8 7 ￿￿￿￿￿ ￿Binary Display Shown

Bit 7 Bit 0

3Edit the bit pattern.

Use the knob and or keys to edit the individual bit values. 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.

￿￿￿￿￿￿ ￿ ￿￿￿￿￿￿￿￿￿'287￿￿￿ Decimal Display Shown

4Output the bit pattern to the specified port.

The specified bit pattern is latched on the specified port. To cancel an output operation in progress, wait for the display to time out.

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