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?

 

 

ensures reset is completed before

 

 

program continues

30

OUTPUT 70903;"*CLS"

 

40

OUTPUT 70903;"CONF:VOLT:DC (@100:115)"

 

 

!Configures multimeter; also

 

 

automatically configures

 

 

multiplexer for SCAN:MODE,

 

 

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 3-6. Connecting the Analog Bus and Digital Bus Cables

42 Using the HP E1351A/53A FET Multiplexer Modules

Chapter 3

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HP FET MULTIPLEXER E1351A/53A manual Scanning Voltmeter Configuration with HP E1326B