VX4101A MultiPaq Instrument User Manual 2–27
Using the Counter
This chapter contains procedures and hardware tips for using the Counter for the
following measurements:
HMeasuring frequency
HMeasuring time interval
HMeasuring rise time
What You Should Know About
See the Appendix Counter Architecture for a block diagram of how the Counter
front end is constructed.

Measuring Frequency

In this procedure, you will make a frequency measurement using a 10 nS
aperture.
1. Select the Counter:
INST:SEL COUNTER
2. Set the input 1 coupling to DC:
INPut:COUPling DC
3. Set input 1 impedance to 50 W:
INPut:IMPedance 50
4. Set the aperture to 10 nanoseconds:
SENSe:FREQ:APER 1e-8
5. Configure the Counter to read frequency:
SENSe:FUNCtion "FREQuency"
6. Initiate the configuration and take the measurement:
INIT
7. Retrieve the measured data:
FETCh?