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4080, 4080D<br />

Command<br />

Syntax<br />

$AA4S Enable/Disable<br />

Digital Filter<br />

Chapter 4<br />

4.7.3 Digital Filter and Programmable Threshold Command Set<br />

Command Name Description I/O Module<br />

Enables or disables the digital filter of<br />

the addressed counter/frequency<br />

module<br />

$AA4 Read Filter Status The addressed counter frequency<br />

module returns the status of its digital<br />

filter<br />

$AA0H(data) Set Minimum<br />

Input Signal<br />

Width at High<br />

Level<br />

$AA0H Read Minimum<br />

Input Signal<br />

Width at High<br />

Level<br />

$AA0L(data) Set Minimum<br />

Input Signal<br />

Width at Low<br />

Level<br />

$AA0L Read Minimum<br />

Input Signal<br />

Width at Low<br />

Level<br />

$AA1H(data) Set Non-isolated<br />

High Trigger<br />

Level<br />

$AA1H Read Nonisolated<br />

High<br />

Trigger Level<br />

$AA1L(data) Set Non-isolated<br />

Low Trigger Level<br />

$AA1L Read Nonisolated<br />

Low<br />

Trigger Level<br />

Sets the minimum input signal width at<br />

high level for a specified<br />

counter/frequency module<br />

Reads the minimum input signal width<br />

setting at high level for a specified<br />

counter/frequency module<br />

Sets the minimum input signal<br />

width at low level for a specified<br />

counter/frequency module<br />

Reads minimum input signal width<br />

setting at low level for a specified<br />

counter/frequency module<br />

Sets the high trigger level of nonisolated<br />

input signals for a specified<br />

counter/frequency module<br />

Requests the addressed counter<br />

frequency module to return the high<br />

trigger level for nonisolated<br />

input signals<br />

Sets the low trigger level of nonisolated<br />

input signals for a specified<br />

counter/frequency module<br />

Requests the addressed<br />

counter/ frequency module to return<br />

the low trigger level for non-isolated<br />

input signals<br />

4080, 4080D<br />

4080, 4080D<br />

4080, 4080D<br />

4080, 4080D<br />

4080, 4080D<br />

4080, 4080D<br />

4080, 4080D<br />

4080, 4080D<br />

4080, 4080D<br />

4080, 4080D<br />

Chapter 4 Command Set 4-189

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