TE5251
User Manual
4-80
Description
This command will program the gate time interval for frequency, period averaged and totalize in gated
mode. Measurements will be taken only after the input has been armed and valid signal available at the
input connector. Notice however, that the gate time internal must be larger than the period of the measure
signal.
Parameters
Name
Range
Type
Default
Description
<interval> 100e-6 to 1
Numeric
1
Will program the gate time interval in units of
seconds. In continuous mode, the counter is self-
armed and therefore every valid signal at the counter
input will open the gate and initiate a measurement
cycle. In hold mode, the counter must be armed
before the gate can open. Always make sure the
programmed gate time interval is larger than the
period of the measured signal.
Response
The 5251 will return the present gate time value in units of seconds.
COUNter:READ
Description
This command will interrogate the counter/timer for a reading. Note that the read command must follow a
valid gate time interval otherwise reading will not be available and the interface bus will be held until the
measurement cycle has been completed and result available to be read.
Response
The 5251 will return the result of the present measurement function reading. The returned value will be in
standard scientific format (for example: 10 MHz would be returned as 10e6 – positive numbers are
unsigned).
COUNter:RESet
Description
This command will reset the counter/timer and arm the instrument for its next reading.
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