Features and Functions 4
Keysight 34970A/34972A User’s Guide 117
Scan count
You can specify the number of times the instrument will sweep through the scan
list. When the specified number of sweeps have occurred, the scan stops.
– Select a scan count between 1 to 50,000 scan sweeps, or continuous.
– During an Interval Scan (see page 110), the scan count sets the number of
times the instrument will sweep through the scan list and therefore determines
the overall duration of the scan.
– During a Scan Once operation (see page 112), the scan count sets the number
of front-panel key presses or scan trigger commands that will be accepted
before terminating the scan.
– During an External Scan (see page 113), the scan count sets the number of
external trigger pulses that will be accepted before terminating the scan.
– During an Alarm Scan (see page 114), the scan count sets the number of
alarms that will be allowed before terminating the scan.
– You can store up to 50,000 readings in non-volatile memory during a scan. If
you set a continuous scan and memory overflows (the MEM annunciator will
turn on), a status register bit is set and new readings will overwrite the first
readings stored (the most recent readings are always preserved).
–The MEASure? and CONFigure commands automatically set the scan count
to 1.
– From the front panel, a Factory Reset (Sto/Rcl menu) sets the scan count to
continuous. From the remote interface, a Factory Reset (*RST command) sets
the scan count to 1 sweep.
– Front-Panel Operation:
00020 SCANS
The default is CONTINUOUS. To set the count to a value between 1 and
50,000 scans, turn the knob clockwise and enter a number.
– Remote Interface Operation:
TRIG:COUNT 20
To configure a continuous scan, send TRIG:COUNT INFINITY.
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