User`s guide

104
Chapter 4 Features and Functions
Scanning
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 Time Since Start of Scan (17 ms)
3 Channel Number
4 Alarm Limit Threshold Crossed
0 = No Alarm, 1 = LO, 2 = HI)
34970A Refresh UG.book Page 104 Wednesday, February 17, 2010 12:34 PM