BNC 1105 Universal Counter - Manual (Page 23)

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6. Press STOP/SINGLE button to make single measurement or to stop
continuous measurements.
Remote Interface Command
Use the following commands to instruct the MODEL 1105 for making frequency
measurement:
[:SENSe]:FUNCtion[:ON] “[:][XNONe:]FREQuency [1|2|3]”
Or
:CONFigure[:SCALar][:VOLTage]:FREQuency [(@1)|(@2)|(@3)]
:READ[[:SCALar][:VOLTage]:FREQuency]?
Or
:MEASure[:SCALar][:VOLTage]:FREQuency? [(@1)|(@2)|(@3)]
3.2 Frequency Ratio Measurement
Auto triggering is enabled by default for frequency ratio measurement,
and the trigger levels are set to the 50% points of each signal. One may
manually disable auto triggering and change the trigger levels and slopes
settings (refer to Ch.4.8).
To measure frequency ratio
1. Connect your signal sources to the input channels you wish to use.
2. Press FREQ & RATIO button.
3. Press the softkey under RATIO to select frequency ratio
measurement function. Press it again to select the desired channels.
4. Optional settings:
a. Use GATE&ExtArm button to set the gate time, resolution or arming
if it’s needed (refer to Ch.4.3).
b. Use Scale&Offset button to set the scaling and offset parameters if
it’s needed (refer to Ch.4.4).
c. Use Limit Modes button set the upper and lower limits if it’s needed
(refer to Ch.4.5).
d. Use Stats button to set up the statistics function and limit filtering if
it’s needed (refer to Ch.4.6).
e. Use the selections in the CH1 & CH2 to set the input conditions and