MEASure:FREQuency?
Syntax
MEASure:FREQuency? [{<expected> | MINimum | MAXimum | DEFault} [,{<resolution> | MINimum |
MAXimum | DEFault}]] [,<channel>]
Description
This query sets all measurement parameters and trigger parameters to default values for frequency meas-
urements, then immediately triggers a measurement. The results are sent directly to the instrument out-
put buffer.
Parameters
Name Type Range of Values Default Value
<expected> Numeric Channels 1 & 2:
0.1 Hz to 350 MHz
MIN = .1 Hz
MAX = 350 MHz
Channel 3:
Option 106:
100 MHz to 6.0 GHz
MIN = 100 MHz
MAX = 6.0 GHz
Option 115:
300 MHz to 15.0 GHz
MIN = 300 MHz
MAX = 15.0 GHz
Channels 1 & 2:
10 MHz
Channel 3:
500 MHz
<resolution> Numeric 1.0E-15 * <expected> to
1.0E-5* <expected>
MIN = 1.0E-15 * <expected>
MAX = 1.0E-5 * <expected>
Value corresponding to
.1 second gate time
<channel> Expression (@1) | (@2) | (@3) (@1)
Remarks
l If <expected> is greater than the minimum input signal frequency for auto-leveling (see
SYSTem:ALEVel:FREQuency command), the input channel is configured for auto-leveling at 50% with a
positive slope. Otherwise, the input channel is configured to use the currently programmed input
threshold voltage and slope (see INPut:LEVel and INPut:SLOPe) with auto-leveling disabled.
l
As defined in the SCPI standard, <resolution> must be specified in absolute frequency (hertz), not as a
fraction of the input signal frequency.
l The gate source (see SENSe:FREQuency:GATE:SOURCE) is set to TIME.
MEASure:FREQuency?
242 Keysight 53220A/53230A Programmer's Reference
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