Keysight 53220A - Frequency Ratio; Figure 3-3 Ratio of Two Input Signal Measurements

53220A/53230A Measurements 3
Keysight 53220A/53230A User’s Guide 95
Frequency ratio
A frequency ratio measurement is the measurement of two signals in which one
signal generally serves as a reference (Figure 3-3). The signals can be different
wave shapes and applied to any 2-channel combination on the counter.
Figure 3-3 Ratio of two input signal measurements.
The commands used to make frequency ratio measurements are:
MEASure:FREQuency:RATio? [{<expected>|MINimum|MAXimum| DEFault}
[,{<resolution>|MINimum|MAXimum|DEFault}]] [,<channel_pair>]
CONFigure:FREQuency:RATio [{<expected>|MINimum|MAXimum|DEFault}
[,{<resolution>|MINimum|MAXimum|DEFault}]] [,<channel_pair>]
– expected is the expected ratio of the two input signals. resolution is the
desired resolution of the ratio measurement. The parameter ranges are:
expected (Ch1/Ch2, Ch2/Ch1): 2.8E-10 to 3.5E+9
expected (Ch1/Ch3, Ch2/Ch3 - Option 106): 1.6E-11 to 3.5
expected (Ch1/Ch3, Ch2/Ch3 - Option 115): 6.6E-12 to 1.2
expected (Ch3/Ch1, Ch3/Ch2 - Option 106): 0.28 to 6.0E10
expected (Ch3/Ch1, Ch3/Ch2 - Option 115): 0.85 to 15.0E10
resolution (all channels): 1.0E-15 * expected to 1.0E-5* expected
(default resolution corresponds to a 0.1s gate time)
numerator channel
f
1
denominator channel
f
2