User`s guide

RIGOL Chapter 2 Front Panel Operations
2-10 M300 User’s Guide
To use the absolute time trigger mode, set an accurate system time for the
instrument by referring to “Date” and “Time”. Then select absolute time trigger
mode and set a time. The instrument executes a scan when the system time reaches
the specified time. If the system time reaches the next specified time point when the
instrument is in a scan, the instrument will ignore the new trigger and continue with
the current scan.
The absolute time format is “Month-Date Hour:Minute:Second”. You need to set a
valid time. The ranges of the parameters are as follows.
Month: 01 to 12
Date: 01 to 31, 30, 29 or 28
Hour: 00 to 23
Minute: 00 to 59
Second: 00 to 59
The instrument can also ignore some time parameters and trigger when the system
time fulfills some of the parameters. Use “.” on the numeric keyboard to set the
parameters to be ignored and the corresponding position will display “**”. For
example, to set the instrument to ignore the “Month” and “Date” and trigger at 8:00
every day, use the numeric keyboard to set the absolute time to “**-** 08:00:00”.
When parameters in “Month-Date Hour:Minute:Second” are all ignored, it is similar
to auto trigger mode.
In absolute time trigger mode, if the number of scans is set to “Infinite”, after you
press Run/Stop at the front panel, the instrument enters the wait-for-trigger state
and then executes a scan each time the system time reaches the specified time.
Press and hold Run/Stop and the instrument will exit the wait-for-trigger state.
If the number of scans is a specific value, after you press Run/Stop at the front
panel, the instrument enters the wait-for-trigger state and then executes a scan each
time the system time reaches the specified time. After executing the specified
number of absolute time triggers, the instrument exits the wait-for-trigger state.
During the scan, the instrument stores the measurement data, scaling data and
alarm data in the non-volatile memory automatically.
Alarm Trigger