Analog Filter - Keithley 2001 Operator's Manual

IEEE-488 Reference
Programming example

4.19.12 Analog Filter

Parameters
Format
Defaults
Query
Description
Programming example
4-144
Note from the table that enabling auto filter with the Model 2001 on the ACI, or RMS, average
or LFRMS ACV function will disable (off) the filter. For the other measurement functions, en-
abling auto filter will enable the moving filter and set the filter count to 10.
Disabling auto filter has no effect on the currently programmed filter state and count.
The ONCE parameter is analogous to a momentary toggle switch. When ONCE is sent, the auto
filter will turn on momentarily and then disable.
10 OUTPUT 716; ":curr:ac:aver:auto on; auto?"
20 ENTER 716; A$
30 PRINT A$
40 END
Line 10 Enables the auto filter for the ACI function, and then queries the state of auto filter.
Line 20 Addresses the Model 2001 to talk.
Line 30 Displays the state of auto filter (1; on).
:FILTer[:LPASs][:STATe] <b>
[:SENSe[1]]:VOLTage[:DC]:FILTer[:LPASs][:STATe] <b>Control analog filter
<b> = 1 or ON
= 0 or OFF
:volt:filt <b>
Power-up
*RST
:SYSTem:PRESet
:FILTer[:LPASs][:STATe]?
Short-form formats: :filt?
Response message: 0 or 1
This command is used to enable or disable the analog filter for the DCV function. When en-
abled, an RC network filters out high frequency (>10kHz) noise on the input signal. The analog
filter is most effective when measuring voltages greater than 2V p-p on the 2V p-p on the 2V or
20V range. See paragraph 3.9.7
10 OUTPUT 716; ":volt:filt on; filt?"
20 ENTER 716; A$
30 PRINT A$
40 END
Line 10 Enables the analog filter for DCV and then queries the state.
Line 20 Addresses the Model 2001 to talk.
Line 30 Displays the state of the filter (1).
Enable analog filter
Disable analog filter
Saved power-on setup
OFF
OFF
for details on the analog filter.
2001-900-01 Rev. K / August 2010