Table of Contents
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Voltage
Measurements
2-Wire Ohms
Measurements
4-Wire Ohms
Measurements
Thermocouple
Temperature
Measurements
Thermistor
Temperature
Measurements
Chapter 4
scan.
10
!Dimension a computer array to store readings.
20
DIM Rdgs(1:32)
!Clear and reset the scanning voltmeter (voltmeter & multiplexer) .
30
40
!See Figure 4-1 for module addresses.
50
CLEAR 70903
60
OUTPUT 70903;"*RST"
70
!Configure the multimeter for DCV measurements and
80
!specify the channel list to scan (channels 00 through 31).
90
OUTPUT 70903;"MEAS:VOLT:DC?<~>(@100:131)"
!Enter and display measured readings. Note: The number of
100
110
!channels in the scan list must equal the number of elements in
!the array Rdgs to use Rdgs(*).
120
130
ENTER 70903;Rdgs(*)
140
PRINT Rdgs(*)
150
END
Note: When the multimeter buffer fills, measurements are suspended until
readings are read from the buffer (by the computer) to make space available.
Line 90 initiates a DC voltage measurement.
To make 2-wire measurements, change line 90 in the voltage measurement
example to read:
90 OUTPUT 70903;"MEAS:RES? (@100:131)"
To make 4-wire measurements, change line 90 in the voltage measurement
example to read:
90 OUTPUT 70903;"MEAS:FRES? (@100:131)"
(note: channels 32 - 63 will automatically be paired with 00 - 31 for 4-wire)
To make type K thermocouple temperature measurements, change line 90 in
the voltage measurement example to read:
90 OUTPUT 70903;"MEAS:TEMP? TC,K,(@100:131)"
To make temperature measurements using a 4-wire, 5000Ω thermistor,
change line 90 in the voltage measurement example to read:
90 OUTPUT 70903;"MEAS:TEMP? FTH,5000,(@100:131)"
HP E1476A Scanning Voltmeter Application Examples 97
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