Parameters
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| Parameter | Parameter | Range of | Default |
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| Name | Type | Values | Units |
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| channel | string | 100 - 163 | none |
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Comments •
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Channel must specify a single channel
Returned Value: returns one of NORM or INV. The type is string.
Send with VXIplug&play Function: hpe14XX_cmdString_Q(...)
[SENSe:]FREQuency:APERture
[SENSe:]FREQuency:APERture <aperture>,<ch_list> sets the time allowed to determine signal frequency and return a reading to the algorithm. When APERture is large enough to contain more than one signal period, the SCP measures and averages the number of signal periods that will fit within this APERture time. If the specified APERture is less than the input signal period, the SCP stretches the aperture in order to measure at least one signal period. This is known a Adaptive Aperture.
Parameters
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| Parameter | Parameter | Range of | Default |
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| aperture | numeric (float32) | .001 to 1 (.001 resolution) | seconds |
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| ch_list | string | 100 - 163 | none |
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Comments • For APERture to effect the measurement, SENS:FREQ:MODE must be set to APERture.
•If the channels specified are on an SCP that doesn’t support this function, an error will be generated. See your SCP’s User’s Manual for its capabilities.
•Related Commands: SENS:FREQ:MODE, SENS:FREQ:NPERiods, SENS:FREQ:LIM:LOWer, SENS:FUNC:FREQ
•*RST Condition: .001 sec
•Send with VXIplug&play Function: hpe14XX_cmd(...)
Usage SENS:FREQ:APER .01,(@144) | set channel 44 aperture to |
| 10msec |
