Programming The Scanning Voltmeter - Agilent Technologies E1476A User Manual

Programming the
Scanning Voltmeter
 ',0 5GJV  
 &/($5  
 287387   567
 287387   0($6 92/7 '&" #  ! Configure the multimeter for DC voltage
 (17(5   5GJV
 35,17 5GJV
 (1'
For This
Measurement:
Voltage N/A
2-Wire Ohms 40 OUTPUT 70903;"MEAS:RES? (@100:131)"
4-Wire Ohms 40 OUTPUT 70903;"MEAS:FRES? (@100:131)"
Thermocouple 40 OUTPUT 70903; "MEAS:TEMP? TC,K,(@100:131)"
Temperature
Thermistor 40 OUTPUT 70903;"MEAS:TEMP? FTH,5000,(@100:131)" 4-wire, 5000Ω thermistor temperature
Temperature
Chapter 3
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As required, set the E1411B multimeter to logical address 24 and the
E1476A multiplexer to logical address 25. Next, install the instruments in
the mainframe and connect the Analog Bus cable between the E1411B
multimeter and the E1476A multiplexer. Then, connect resistors and/or
Zero Ohm jumpers to desired channels (between 0 and 31) on the terminal
module.
When the configuration is complete, turn mainframe power ON and verify
that the "VOLTMETR" driver version A.06.00 is installed in the E1406
Command Module (see Exercise 1 in Chapter 1). If the appropriate
"VOLTMETR" driver is installed, run the following program.
This example scans 32 multiplexer channels and makes a measurement on
each channel. The measured readings are entered into the computer and
displayed after the scan. Table 3-3 shows how to modify the program to
make voltage, 2-Wire Ohms, 4-Wire Ohms, Thermocouple, and Thermistor
measurements.
NOTE
For the example program, when the multimeter buffer fills, measurements
are suspended until readings are read from the buffer (by the computer) to
make space available.
Table 3-3. Changes to Example Program
Change Line 40 to:
! Dimension array to store readings
! Clear the scanning voltmeter
! Reset the scanning voltmeter
! measurements and specify channel list
! to scan (channels 00 through 31)
! Enter measured readings
! Display measured readings
Comments
Line 40 performs a DCV measurement
Channels 32 - 63 are automatically
paired with channels 00 - 31 for
4-wire measurements.
Type K thermocouple temperature
measurements.
measurements.
Scanning Voltmeter Applications 61