Manual scanning – Agilent Technologies L4400 User Manual
Page 85
Operating and Programming
3
L4400 User’s Guide
73
• Mx+B scaling and alarm limits (L4450A, L4452A) are applied to
measurements during a scan and all data is stored in volatile memory.
• The
CONFigure
and
MEASure?
commands (L4450A, L4452A)
automatically set the scan interval to immediate (0 seconds) and the
scan count to 1 sweep.
• The instrument sets the scan interval to immediate (0 seconds) after a
Factory Reset (
*RST
command). An Instrument Preset (
SYSTem:PRESet
command) or Card Reset (
SYSTem:CPON
command) does not change
the setting.
The following program segment configures the instrument for an interval
scan.
TRIG:SOURCE TIMER
TRIG:TIMER 5
TRIG:COUNT 2
INIT
Select interval time mode
Set the scan interval to 5 seconds
Sweep the scan list 2 times
Initiate the scan
Note: To stop a scan, send the
ABORt
command.
Manual Scanning
In this configuration, the instrument waits for a command before
sweeping through the scan list.
• All readings from the scan are stored in volatile memory.
Readings accumulate in memory until the scan is terminated
(until the trigger count is reached or until you abort the scan).
• You can specify a trigger count which sets the number of scan trigger
commands that will be accepted before terminating the scan. See
on page 75 for more information.
• Mx+B scaling and alarm limits (L4450A, L4452A) are applied to
measurements during a manual scanning operation and all data is
stored in volatile memory.
The following program segment configures the instrument for a manual
scanning operation.
TRIG:SOURCE BUS
TRIG:COUNT 2
INIT
Select bus (manual) mode
Sweep the scan list 2 times
Initiate the scan
Then, send the
*TRG
(trigger) command to begin each scan sweep.
Note: To stop a scan, send the
ABORt
command.