HP 132A, 53131A [:SENSe]:FREQuency:EXPected[1|2|3] <numeric_value> [HZ], [:SENSe]:FREQuency:EXPected[1|2|3]:AUTO ON, 10 %

Chapter 4 Command Reference

[:SENSe] Subsystem

[:SENSe]:FREQuency:EXPected[123] <numeric_value> [HZ]

<numeric_value> Range

Query Response

Comments

Sets or queries the approximate frequency of a signal you expect to measure. Providing this value enables the Counter to eliminate a pre-measurement step, saving measurement time and enabling more accurate

arming. This applies to the following measurement functions: Frequency, Period, Ratio, Phase, and Duty Cycle.

Note that the actual frequency of the input signal must be within 10 % of the expected frequency value you entered.

∙For channels 1 and 2, the frequency range is 0.1 to 225E6 HZ

∙For channel 3 (Option 030), the frequency range is 100E6 to 3E9 HZ

∙For channel 3 (Option 050), the frequency range is 200E6 to 5E9 HZ

∙Numeric data transferred as ASCII bytes in <NR3> format with fifteen significant digits.

∙If [:SENS]:FREQ:EXP[123]:AUTO is ON, Not a Number 9.91E37 is returned and error -221 is generated.

This value is unaffected by save/recall.

[:SENSe]:FREQuency:EXPected[123]:AUTO ON

Query Response

The command, which only allows the ON parameter, configures the Counter to perform, as necessary, a pre-measurement step to automatically determine the approximate frequency of the measurement signal(s). This applies to the following measurement functions: Frequency, Period, Ratio, Phase, and Duty Cycle.

The query indicates whether or not the above described pre-measurement step is enabled.

∙ Single ASCII-encoded byte, 0 or 1.

∙ A value of 0 indicates OFF; a value of 1 indicates ON.

4-88 Programming Guide