Filter
Top Products
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.
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
“Trigger Count" 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.
Then, send the
*TRG (trigger) command to begin each scan sweep.
Note: To stop a scan, send the
ABORt command.
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
TRIG:SOURCE BUS
TRIG:COUNT 2
INIT
Select bus (manual) mode
Sweep the scan list 2 times
Initiate the scan