Specifications

RIGOL Chapter 2 Command System
2-142 M300 Programming Guide
[SENSe:]FREQuency:APERture
[SENSe:]PERiod:APERture
Syntax [SENSe:]FREQuency:APERture {<seconds>|MIN|MAX}[,(@<ch_list>)]
[SENSe:]FREQuency:APERture? [{(@<ch_list>)|MIN|MAX}]
[SENSe:]PERiod:APERture {<seconds>|MIN|MAX}[,(@<ch_list>)]
[SENSe:]PERiod:APERture? [{(@<ch_list>)|MIN|MAX}]
Description Set or query the gate time (also called aperture time) of the frequency or period
measurements on the specified channels.
Parameters
Name
Type
Range
Default
<seconds> Numeric
Any numeric value between MIN and MAX.
The final gate time is decided by the
“
Principle of setting with greater value”.
The standard values of the gate time:
{1ms|10ms|100ms|1s}
Wherein: MIN=1ms, MAX=1s.
100ms
<ch_list>
Channel
List
One or more channels (only for the
multiplexer channels), the rules are as
follows:
(@101): channel 01 on the module in
Slot1;
(@101:103): channel 01 through 03 on the
module in Slot1;
(@101:103,301): channel 01 through 03
on the module in Slot1 and channel 01 on
the module in Slot3;
If the parameter
is omitted, this
command will be
applied to the
whole scan list.
Explanation  You can use MIN or MAX to set <seconds>. Wherein, MIN selects the shortest gate
time, which gives the lowest resolution of the low-frequency measurement and the
fastest measurement speed; MAX selects the longest gate time, which gives the
highest resolution of the low-frequency measurement and the slowest measurement
speed.
 The instrument sets the gate time to 100 ms after a Factory Reset (send the
*RST
command). An Instrument Preset (send the
SYSTem:PRESet command) or Card Reset
(send the SYSTem:CPON command) does not affect the current gate time.
Return
Format
The query returns the gate time in scientific notation for each channel specified. Multiple
return values are separated by commas.
Example FREQ:APER 10E-01,(@203,205)
FREQ:APER? (@203,205)
The query returns +1.00000000E+00,+1.00000000E+00.
You can replace FREQ with PER to set or query the gate time of the period measurements
of the specified channels.
Related
commands
SENSe Command Subsystem
CONFigure:FREQuency
MEASure:FREQuency?
CONFigure:PERiod
MEASure:PERiod?
[SENSe:]FUNCtion