IEEE-488 Reference
3-37
the *WAI command after the :INITiate command, all subsequent commands will not execute
until the Model 6517A goes back into idle.
The *TRG command issues a bus trigger which could be used to provide the arm, scan and mea-
sure events for the Trigger Model. By sending the *WAI command after the *TRG command,
subsequent commands will not be executed until the pointer for the Trigger Model has finished
moving in response to *TRG and has settled at its next state.
Program fragment PRINT #1, "output 27; :syst:pres" ' Select defaults
PRINT #1, "output 27; :init:cont off; :abort" ' Place 6517A in idle
PRINT #1, "output 27; :arm:coun 1" ' Program for 30 measurements
and then stop (idle)
PRINT #1, "output 27; :arm:lay2:coun 1"
PRINT #1, "output 27; :trig:coun 30; sour tim"
PRINT #1, "output 27; :init; *wai" ' Start measurements and send
*wai
PRINT #1, "output 27; :data?" ' Query a reading
PRINT #1, "enter 27" ' Get reading after 6517A goes
into idle
LINE INPUT #2, a$ ' Read the reading
PRINT a$ ' Display the reading
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