Scan Trigger Source - Agilent Technologies 34980A User Manual

Scan Trigger Source

You can configure the event or action that controls the onset of each
sweep through the scan list (a sweep is one pass through the scan list):
• You can set the instrument's internal timer to automatically scan at a
• You can manually control a scan by repeatedly pressing the
• You can start a scan by sending a software command from the remote
• You can start a scan when an external TTL trigger pulse is received.
• You can start a scan when an alarm event is logged on the channel
Interval Scanning
In this configuration, you control the frequency of scan sweeps by
selecting a wait period from the start of one trigger to the start of the
next trigger (called the trigger- to- trigger interval). If the scan interval
is less than the time required to measure all channels in the scan list, the
instrument will scan continuously, as fast as possible (no error is generated).
Trigger-to-trigger interval
• You can set the scan interval to any value between 0 seconds and
• Once you have initiated the scan, the instrument will continue scanning
• Mx+B scaling and alarm limits are applied to measurements during a
34980A User's Guide
specific interval. You can also program a time delay between channels
in the scan list (see
Scan (Measure) key from the front panel.
interface (
MEASure?
being monitored.
Trigger 1
Sweep 1
Trigger Timer
(0 to 359,999 seconds)
99:59:59 hours (359,999 seconds), with 1 ms resolution.
until you stop it or until the trigger count is reached. See
Count" on page 52 for more information.
scan and all data is stored in volatile memory.
"Channel Delay" on page 56).
or command).
INITiate
Sweep 2
Sweep
. . .
Features and Functions
Trigger 2
n
t
"Trigger
2
47