7.3.1.2 Automatically Transmitting Measurements
By setting the sampleperiod, the 1502A can be programmed to automatically
transmitmeasurements from the RS-232 port at specified intervals. The sample
period can be setremotely using the commands:
SA=[[hh:]mm:]ss<EOS> sets the sample period
SA=0<EOS> disables automatic transmission of measurements
The valueof the sample period can be from 0 seconds to 24 hours. It is not nec-
essary to givehours or minutes for values in seconds. A value of 0 disables au-
tomatic transmission of measurements. Following are some example
commands.
SA=10<EOS> sets the sample period to 10 seconds
SA=5:00<EOS> sets the sample period to 5 minutes
SA=1:00:00<EOS> sets the sample period to 1 hour
7.3.1.3 Selecting the Unit of Measurement
The selectedunit is used in displaying measurements on the front panel and in
reading measurements from the communications interfaces. The following
commands can be used to selectthe unit of measurement:
U=C<EOS> selects Celsius
U=F<EOS> selects Fahrenheit
U=K<EOS> selects Kelvin
U=O<EOS> selects ohms
7.3.1.4 Enabling the Time Stamp
Enabling the time stamp causes the time of the system clock to be transmitted
along with measurement data. The timestamp can be enabled or disabled u sing
the followingcommands:
ST=ON<EOS> enables the time stamp
ST=OFF<EOS> disables the time stamp
7.3.1.5 Setting the Clock
The systemclock is set in 24-hour format using the command:
CL=hh:mm:ss<EOS>
For example:
CL=14:24:00 sets the time to 2:24 pm.
7.3.2 Probe Characterization Commands
The following commands relate to reading measurement data.
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7 Digital Communications Interface
Remote Commands