User`s guide

Chapter 2 Front Panel Operations RIGOL
M300 User’s Guide
2-5
6 Absolute Time
Absolute time is defined as the time when the instrument executes the scan in
absolute time scan mode. When the trigger mode is “AbsTime”, select AbsTime
using the up/down direction keys and set the desired time using the numeric
keyboard. The 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, 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”.
7 Alarm Channel
When the trigger mode is set to “Alarm”, select Channel using the up/down
direction keys and set the alarm channel to “Alarm1”, “Alarm2”, “Alarm3” or
“Alarm4” using the left/right direction keys. The instrument executes a scan
when an alarm is generated from the channel selected.
8 Trigger Edge Type
When the trigger mode is “External”, select Edge using the up/down direction
keys and select “Rising” or “Falling” using the left/right direction keys. The
instrument executes a scan when a TTL trigger pulse with specified edge is
received by the external trigger signal input terminal.