Scanning Voltmeter Configuration with HP E1326B
This example shows an HP E1326B Multimeter and an HP E1351A/ E1353A Multiplexer combined into a single VXIbus instrument, a scanning voltmeter. The secondary address for the scanning voltmeter is 03. Both the analog bus connector and the digital bus connector are used. Once the scanning starts, there is no intervention from the mainframe CPU. The scan list is in RAM on the multiplexer, and the two handshake lines on the digital bus control the triggering.
The following program illustrates the procedures:
10 | DIM Rdgs(1:16) | !Dimension array to store readings |
20 | OUTPUT 70903;"*RST;*OPC?" | !Clear the multimeter; OPC? |
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| ensures reset is completed before |
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| program continues |
30 | OUTPUT 70903;"*CLS" |
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40 | OUTPUT 70903;"CONF:VOLT:DC (@100:115)" | |
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| !Configures multimeter; also |
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| automatically configures |
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| multiplexer for SCAN:MODE, |
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| SCAN:PORT and TRIG:SOUR |
50 | OUTPUT 70903:"INIT" | !Close first channel, start scan |
60 | OUTPUT 70903;"FETC?" | !Retrieve readings from mainframe |
70ENTER 70903;Rdgs(*)
80PRINT Rdgs(*)
90END
Figure
42 Using the HP E1351A/53A FET Multiplexer Modules | Chapter 3 |