Keithley 2002

IEEE-488 Reference
3-104
:AUTO <b>|ONCE
[:SENSe[1]]:CURRent:AC:AVERage:AUTO <b>|ONCE Control auto filter for ACI
[:SENSe[1]]:CURRent:DC:AVERage:AUTO <b>|ONCE Control auto filter for DCI
[:SENSe[1]]:VOLTage:AC:AVERage:AUTO <b>|ONCE Control auto filter for ACV
[:SENSe[1]]:VOLTage:DC:AVERage:AUTO <b>|ONCE Control auto filter for DCV
[:SENSe[1]]:RESistance:AVERage:AUTO <b>|ONCE Control auto filter for Ω2
[:SENSe[1]]:FRESistance:AVERage:AUTO <b>|ONCE Control auto filter for Ω4
[:SENSe[1]]:TEMPerature:AVERage:AUTO <b>|ONCE Control auto filter for TEMP
<b> = 0 or OFF Disable auto filter
1 or ON Enable auto filter
ONCE Enable and then disable auto filter
:AUTO? Query state of auto filter
These commands are used to control auto filter for the specifed function. The configuration for
the filter is summarized in tables 2-9, 2-14 and 2-19.
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 turns on momentarily and then disables.
PRINT #1, "output 16; :volt:dc:aver:auto on; auto?" ' Enable auto filter
PRINT #1, "enter 16" ' Get response from 2002
:ADVanced commands
:NTOLerance <n>
[:SENSe[1]]:CURRent:AC:AVERage:ADVanced:NTOLerance <n> Specify noise tolerance (ACI)
[:SENSe[1]]:CURRent:DC:AVERage:ADVanced:NTOLerance <n> Specify noise tolerance (DCI)
[:SENSe[1]]:VOLTage:AC:AVERage:ADVanced:NTOLerance <n> Specify noise tolerance (ACV)
[:SENSe[1]]:VOLTage:DC:AVERage:ADVanced:NTOLerance <n> Specify noise tolerance (DCV)
[:SENSe[1]]:RESistance:AVERage:ADVanced:NTOLerance <n> Specify noise tolerance (Ω2)
[:SENSe[1]]:FRESistance:AVERage:ADVanced:NTOLerance <n> Specify noise tolerance (Ω4)
<n> = 1 to 100 Specify noise tolerance in percent (±)
DEFault ±1% for DCV, DCI, Ω2 and Ω4
±5% for ACV and ACI
MINimum 0%
MAXimum ±100%
:NTOLerance? Query noise tolerance
:NTOLerance? DEFault Query *RST default noise tolerance
:NTOLerance? MINimum Query lowest allowable noise tolerance
:NTOLerance? MAXimum Query largest allowable noise tolerance
Each measurement function (except TEMP and FREQ) can utilize the advanced filter which
adds a noise tolerance window to the averaging algorithm. These commands are used to set the
noise tolerance level of the advanced filter for the specifed function. The :ADVanced[:STATe]
commands are used to enable or disable the advanced filter.
The noise tolerance level is expressed as a percent of the last averaged reading. In general, if the
noise is within this window, the reading is simply based on the normal averaging algorithm. If
a reading is outside this window, then the advanced averaging algorithm is used. See paragraph
2.9.1 for details.
Parameters
Query
Description
Program fragment
Parameters
Query
Description