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Agilent 34970A/34972A Data Acquisition / Switch Unit

Agilent 34970A/34972A Data Acquisition / Switch Unit

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Chapter 3 Front-Panel Overview<br />

To Write to a Digital Output Port<br />

To Write to a Digital Output Port<br />

The multifunction module (34907A) has two non-isolated 8-bit<br />

input/output ports which you can use for outputting digital patterns.<br />

1 Select the Digital Output port.<br />

Select the slot containing the multifunction module and continue turning<br />

the knob until DIN is displayed (channel 01 or 02).<br />

2 Enter the bit pattern editor.<br />

Notice that the port is now converted to an output port (DOUT).<br />

4<br />

3<br />

.<br />

00000000 DOUT Binary Display Shown<br />

3 Edit the bit pattern.<br />

Use the knob and or keys to edit the individual bit values. You<br />

can specify whether you want to use binary or decimal format. Once you<br />

have selected the number base, it is used for all input or output<br />

operations on the same port. To change the number base, press the<br />

key and select USE BINARY or USE DECIMAL.<br />

.<br />

240 DOUT Decimal Display Shown<br />

4 Output the bit pattern to the specified port.<br />

The specified bit pattern is latched on the specified port. To cancel an<br />

output operation in progress, wait for the display to time out.<br />

67

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