User`s guide

RIGOL Chapter 2 Front Panel Operations
2-66 M300 User’s Guide
 Latch
In this mode, the corresponding pin is latched to the status (high level or
low level) specified in Output when the alarm channel generates an alarm
until you clear it by initiating a new scan or cycling power. You can also
manually clear (pressing Clear) the output of this pin at any time (even
during a scan) and the alarm data is not cleared. The alarm data is cleared
when you initiate a new scan.
 Track
In this mode, the corresponding pin jumps to the status (high level or low
level) specified in Output when a reading of the channel crosses a limit and
remains outside the limit. When a reading returns to within the limits, the
output of this pin is cleared automatically. You can also manually clear
(pressing Clear) this pin at any time (even during a scan) and the alarm
data is not cleared. The output pin and alarm data are both cleared when
you initiate a new scan.
2 Ouput
Set the output status of the corresponding pin when an alarm is generated. Use
the up/down direction keys to select Output and use the left/right direction
keys to select “High” or “Low”.
 Low
when an alarm is generated, the corresponding pin outputs a TTL low level
(0 V).
 High
when an alarm is generated, the corresponding pin outputs a TTL high level
(+3.3 V).
3 Channel
Display the numbers of channels that select this alarm channel. By default, all
the channels select Alarm1. You can modify the alarm configuration via the third
step of the channel configuration guide (refer to “Alarm Configuration
”) or
using Add and Delete.
 Add
Use the up/down direction keys to select Channel, press Add and input
the desired channel number. After that, the specified channel uses the
current alarm channel and the number of the channel added is displayed in
Channel.
 Delete
Use the up/down direction keys to select Channel, use the left/right
direction keys to select the desired channel number and press Delete to
delete the specified channel. The number of the channel deleted will not be
displayed in Channel.
4 Clear
Press this softkey to clear the alarm output of the corresponding pin of the
current alarm channel manually, but the alarm data is not cleared.