Specifications

RIGOL Chapter 2 Command System
2-12 M300 Programming Guide
CALCulate:LIMit:LOWer
CALCulate:LIMit:UPPer
Syntax CALCulate:LIMit:LOWer {<lo_limit>|MAX|MIN}[,(@<ch_list>)]
CALCulate:LIMit:LOWer? [(@<ch_list>)]
CALCulate:LIMit:UPPer {<hi_limit>|MAX|MIN}[,(@<ch_list>)]
CALCulate:LIMit:UPPer? [(@<ch_list>)]
Description
Set the alarm lower and upper limits of the specified channels.
Parameters
Name
Type
Range
Default
<lo_limit> Numeric
Multiplexer channel: any numeric value
between MIN and MAX
MIN=-1.000000000E+15
MAX=+1.000000000E+15
TOT Channel: none
0
<hi_limit> Numeric
Multiplexer channel: any numeric value
between MIN and MAX
MIN=-1.000000000E+15
MAX=+1.000000000E+15
TOT Channel: any integer between 0 and
4294967295 (2
32
-1)
0 for the
multiplexer
channel and 1
for the TOT
channel
<ch_list>
Channel
List
One or more channels (only for the
multiplexer channels and TOT channels), the
rules are as follows:
(@101): channel 01 on the module in Slot1;
(@101:103): channel 01 through 03 on the
module in Slot1;
(@101:103,301): channel 01 through 03 on
the module in Slot1 and channel 01 on the
module in Slot3.
If the parameter
is omitted, this
command will be
applied to the
whole scan list.
Explanation  An error is generated if the DMM module is not installed or is disabled. You can set a
lower limit, an upper limit or both for the specified channel. The lower limit must
always be lower than or equal to the upper limit.
 For the TOT channels, the channels do not have to be part of the scan list and the DMM
module is not required. You can only set the upper limit of the TOT channels.
 Once you have defined the upper and lower limits using these commands, sending the
CALCulate:LIMit:LOWer:STATe and CALCulate:LIMit:UPPer:STATe command can
enable the corresponding alarm modes.
 Changing the channel function and scaling parameters will turn off the alarm function
and clear the alarm limits.
 When a channel is removed from the scan list, its alarm limits will not be cleared. When
it is re-added into the scan list (the channel function and scaling parameters are not
changed), the alarm setting of this channel remains unchanged.
 A Factory Reset (the
*RST command) clears the alarm limits and turns off the alarm
function. An Instrument Preset (the
SYSTem:PRESet command) or Card Reset (the
SYSTem:CPON command) does not clear the alarm limits and does not turn off the
alarm function.
Return
Format
The query returns the alarm limits in scientific notation. Multiple return values are
separated by commas.