Preparation for Use 1
Keysight 53220A/53230A User’s Guide 41
The date and time settings for the counter’s real-time clock are set using the
commands:
SYSTem:DATE <year>,<month>,<day>
SYSTem:DATE? (query form)
SYSTem:TIME <hour>,<minute>,<second>
SYSTem:TIME? (query form)
The date and time range values are:
year: 2000-2099 hour: 0-23
month: 1-12 minute: 0-59
day: 1-31 second: 0-59.999
The real-time clock is battery-backed and retains the date and time when power
is off. There is no automatic setting of, or automatic return to the current date and
time.
Measurement time out
The measurement time-out is the time allowed for each measurement to
complete. If a measurement does not complete before the time out expires,
9.91E37 (not a number) is returned and the display indication is: - - - - - - -. The
sequence continues with the next reading in the sample count.
Specifying a time out prevents the instrument from pausing indefinitely if for some
reason a measurement is unable to complete.
The default and factory-set time out is 1 second. Refer to Setting the
Measurement Time Out in Chapter 3 for more information.
Time base
53220A and 53230A measurements are based on a reference oscillator - also
referred to as an internal/external clock or time base. A valid reference oscillator
signal must be present for measurements to occur.
Refer to Reference Oscillator Configuration in Chapter 3 for detailed information
on selecting and configuring the reference oscillator source.
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