Keithley DMM7510 Reference Manual

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 µs: OFF or 0
64 µs: 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
Analog triggering overview (on page 3-64)

Keithley DMM7510 Specifications

General

Brand	Keithley
Model	DMM7510
Category	Multimeter
Language	English