User`s manual

• Scanning Operation: With a valid channel list,
INITiate[:IMMediate] starts the scanning cycle and closes the first
channel in the channel list. Successive triggers from the source
specified by
TRIGger:SOURce advances the scan through the
channel list.
• Stopping Scan: See the ABORt command.
• Related Commands: TRIGger, TRIGger:SOURce
• *RST Condition: All multiplexers channels are open.
Example Scanning Using External Instruments
The following example shows how to scan channels using the Agilent
E1300B/E1301B Mainframe via GPIB and an Agilent 3457A Digital
Multimeter. This example uses the mainframe’s "Trig Out" port to
synchronize the multiplexer module in a switchbox to the multimeter. The
trigger pulse from the port triggers the multimeter for a measurement. See
Chapters 2 and 3 for typical user connections to the multiplexer.
The computer used in the example is an HP Series 200/300 with BASIC as
the program language. The computer interfaces with the mainframe over
GPIB. Assumed is an GPIB select code of 7, an GPIB primary address of
09 and 22 for the Agilent E1300B/E1301B Mainframe and Agilent 3457A
Multimeter, respectively, and an GPIB secondary address of 14 for the
switchbox.
10 OUTPUT 722;"TRIG EXT;DCV" !Sets multimeter to external trigger
and to measure dc volts
20 OUTPUT 70914;"OUTP ON" !Enables "Trig Out" port
30 OUTPUT 70914;"TRIG:SOUR BUS" !Sets switchbox to receive bus
triggers
40 OUTPUT 70914;"SCAN:MODE VOLT"!Sets switchbox to measure
voltage during scanning
50 OUTPUT 70914; "SCAN:PORT ABUS"!Sets switchbox to close the
appropriate tree switches during
scanning
60 OUTPUT 70914;"SCAN (@100:115)"!Selects the channel list
70 OUTPUT 70914;"INIT" !Starts scanning cycle
80 FOR I = 1 TO 16 !Start count loop
90 ENTER 722;A !Enter reading into variable A
100 PRINT A !Print reading in variable A
110 TRIGGER 70914 !Trigger the switchbox to advance
the channel list
120 NEXT I !Increment count
130 END
66 Agilent E1351A/53A 16-Channel FET Multiplexer Command Reference Chapter 5