Keysight 53210A Mode D'emploi page 140

5 Triggering and Gating
Querying the Gate Time
The gate time set by the expected value and resolution parameters can be
determined after execution of the
For example, assume a measurement requiring 9-digit (10 mHz) resolution of a 5
MHz signal is required. Because digits of resolution is approximately equal to
Log
as:
MEAS:FREQ? 5e6, 5E-3, (@1)
A typical measurement using this configuration might return:
+4.99999949990003E+006
With the counter display registering:
4.999 999 50MHz
Querying the gate time after sending this command returns:
SENS:FREQ:GATE:TIME?
+1.00000000000000E-001
From
resolution (digits) in terms of gate time, locate the number of digits in
and select the corresponding gate time:
SENS:FREQ:GATE:TIME 100e-3
SENS:FREQ:GATE:SOUR TIME
As another example, assume a measurement requiring 7-digit resolution of a 5 ns
(200 MHz) signal. Recalling that
approximately equal to digits of resolution, the measurement can be configured
as:
MEAS:PER? 5E-9, 5E-16, (@1)
140
(expected value) -
10
Table 5-2 this corresponds to 9 digits of resolution. To achieve a desired
CONFigure
(resolution), this measurement could be configured
Log
10
// expected freq, resolution
(9 digits)
(100 ms)
// set gate time = 100 ms
// set gate source
(expected value) -
Log
10
// per meas of 200 MHz signal
or command.
MEASure
(resolution) is
Log
10
Keysight 53210A User's Guide
Table 5-2