Section 6: SCPI command reference
Model DMM7510 7½ Digit Graphical Sampling Multimeter Reference Manual
6-58
DMM7510-901-01 Rev. B / May 2015
[:SENSe[1]]:<function>:ATRigger:HFReject
This command enables or disables high frequency rejection on analog trigger events.
Type
Affected by
Where saved
Default value
Command and query
Recall settings
Instrument reset
Power cycle
Measure configuration list
Save settings
Measure configuration list
Measure functions: ON (1)
Digitize functions: OFF (0)
Usage
[:SENSe[1]]:<function>:ATRigger:HFReject <setting>
[:SENSe[1]]:<function>:ATRigger:HFReject?
<function>
The function to which the setting applies; see
Functions
<setting>
0
µ
s:
OFF
or
0
64
µ
s:
ON
or
1
Functions
VOLTage[:DC]
RESistance
TEMPerature
VOLTage[:DC]:RATio
VOLTage:AC
FRESistance
CONTinuity
DIGitize:VOLTage
CURRent[:DC]
DIODe
FREQuency[:VOLTage]
DIGitize:CURRent
CURRent:AC
CAPacitance
PERiod[:VOLTage]
Details
False triggering around the set analog trigger level may occur with low frequency signals that are
noisy, DC, or have low amplitude and slew rate during the peaks of input sine waves less than
250 Hz. High frequency rejection avoids the false triggers by the requiring the trigger event to be
sustained for at least 64
μs. This behavior is similar to a low pass filter effect with a 4 kHz 3 dB
bandwidth.
When high frequency rejection is on, 64
μs of additional trigger latency is incurred. You may also
need to adjust the trigger levels to ensure that the trigger condition is satisfied for at least 64
μs.
Example
VOLT:ATR:HFR ON
Turn high frequency rejection for the analog
trigger to on when the measure function is set to
DC voltage.
Also see
(on page 3-64)