IEEE-488 Reference
5-49
After *OPC? is executed, additional commands cannot be sent to the Model 7001 until the pend-
ing overlapped commands have finished. For example, :INITiate:CONTinuous ON followed by
*OPC? will lock up the instrument and will require a device clear (DCL or SDC) before it will
accept any more commands.
NOTE
See *OPC, *TRG and *WAI for more information.
10 OUTPUT 707; “:open all”
20 OUTPUT 707; “*RST”
30 OUTPUT 707; “:scan (@ 1!1:1!10)”
40 OUTPUT 707; “:trig:coun:auto on”
50 OUTPUT 707; “:trig:del 0.5"
60 OUTPUT 707; “:init”
70 OUTPUT 707; “*OPC?”
80 ENTER 707; A$
90 PRINT A$
100 OUTPUT 707; “*STB?”
110 ENTER 707; B$
120 PRINT B$
130 END
Line 10 Opens all channels.
Line 20 Selects default configuration (see Table 5-5).
Line30 Defines scan list (channels 1 through 10).
Line 40 Enables automatic scan-list-length for channel count.
Line 50 Sets a 0.5 second delay between each channel.
Line 60 Starts the scan (takes 7001 out of idle state).
Line 70 Place a “1” in the Output Queue after the scan ends.
Line 80 Address the 7001 to talk.
Line 90 Display the contents of the Output Queue (“1”).
Line 100 Request value of Status Byte Register.
Line 110 Address 7001 to talk.
Line 120 Display value of register (B4 will be set).
When the above program is run, channels 1 through 10 will be scanned and then, at the end of
the scan, an ASCII “1” will be placed in the Output Queue. The Output Queue and Status Byte
Register will then be read to verify the contents.
Programming
example
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