Specifications

RIGOL Chapter 2 Command System
2-50 M300 Programming Guide
FORMat Command Subsystem
During a scan, the instrument automatically adds a time stamp to all the readings and stores them in the
memory. Each reading is also stored with the corresponding information, including the measurement units,
time stamp, channel number and alarm status information. You can set return value format of the scan
result query commands (the
R?, READ?, FETCh? commands and etc.) using the FORMat Command
Subsystem commands (enablbing or disabling the measurement units, time stamp, channel number, and
alarm status information).
 FORMat:READing:ALARm
 FORMat:READing:CHANnel
 FORMat:READing:TIME
 FORMat:READing:TIME:TYPE
 FORMat:READing:UNIT
Explanation：
The return readings only contain the measurement value by default, for example, +3.296507075E-03.
If the unit, time stamp, channel number and alarm information are all enabled, the readings are
returned in the following two forms based on different time stamp types.
1 RELative
+3.296507075E-03 V,000000007.282,102,1
①Readings+Unit ②Relative Time ③Channel Number ④ Alarm Limit Type
2 ABSolute
+3.296507075E-03 V,2012,11,21,16,46,49.506,102,1
①Readings+Unit ②Absolute Time ③Channel Number ④ Alarm Limit Type
Wherein, the definition of ④ Alarm Limit Type is: 0=None; 1=LO; 2=HI; 3=HI+LO.