3 53220A/53230A Measurements
96 Keysight 53220A/53230A User’s Guide
– channel_pair settings are (@1),(@2)|(@2),(@1)|(@1),(@3)|
(@3),(@1)|(@2),(@3)|(@3),(@2). Within the pair, the first channel represents
the ratio’s numerator and the second channel represents the ratio’s
denominator. The default channel_pair is (@1),(@2).
Frequency ratio examples
// using MEASure? - ratio measurement expecting a 1:1
// ratio, set 6 digits of resolution of ratio measurement
*RST // reset to start from known state
MEAS:FREQ:RAT? 1, 1.0E-6, (@1),(@2)
-------------------------------------------------------
// using CONFigure - ratio measurement expecting a 1:1
// ratio, set 9 digits of ratio resolution
*RST // reset to start from known state
CONF:FREQ:RAT 1, 1.0E-9, (@1),(@2)
INP:LEV 1.5 // set a 1.5V threshold level (ch. 1)
INP2:LEV 1.5 // set a 1.5V threshold level (ch. 2)
READ?
Notes
1 The digits of resolution in the above ratio measurements is set by the
resolution parameter (1.0E-6, 1.0E-9). In effect, the exponent corresponds
to the number of digits. See Frequency measurements in Chapter 5 for
information on the relationship between gate time and reading resolution.
2 See Chapter 4 for additional information on counter threshold levels and on
configuring the input signal path.
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