4 Features and Functions
118 Keysight 34970A/34972A User’s Guide
Reading format
During a scan, the instrument automatically adds a time stamp to all readings and
stores them in non-volatile memory. Each reading is stored with measurement
units, time stamp, channel number, and alarm status information. From the
remote interface, you can specify which information you want returned with the
readings (from the front panel, all of the information is available for viewing). The
reading format applies to all readings being removed from the instrument from a
scan; you cannot set the format on a per-channel basis.
– From the remote interface, the time stamp information is returned either in
absolute time (time of day with date) or relative time (time since start of scan).
Use the FORMat:READ:TIME:TYPE command to select absolute or relative
time. From the front panel, the time stamp is always returned in absolute time.
–The MEASure? and CONFigure commands automatically turn off the units,
time, channel, and alarm information.
–A Factory Reset (*RST command) turns off the units, time, channel, and alarm
information.
– Remote Interface Operation: The following commands select the format of
readings returned from a scan.
FORMat:READing:ALARm ON
FORMat:READing:CHANnel ON
FORMat:READing:TIME ON
FORMat:READing:TIME:TYPE {ABSolute|RELative}
FORMat:READing:UNIT ON
The following is an example of a reading stored in memory with all fields enabled
(relative time is shown).
.
1 Reading with Units (26.195 °C)
2 Channel Number
3 Time Since Start of Scan (17 ms)
4 Alarm Limit Threshold Crossed
0 = No Alarm, 1 = LO, 2 = HI)