HP 4284A - Page 215

command. When the measurement results can b e read bya
controller under the IDLE state, the FETCh? command must be
used.
2. *TRG common command or Group Execution Trigger ( GET ) bus
command
In the WAIT FOR TRIGGER state, the HP 4284A is triggered
by sending the *TRG common command or GET bus command,
and the measurement results in one trigger sequence can be read
without sending the FETCh? command under the IDLE state.
Thus,
\ *TRG "=\ TRIGger:IMMediate;:FETCh? "
Figure 7-11 and Figure 7-12 shows the dierence between the
TRIGger:IMMediate command and *TRG or GET command by using
the sample programs.
10 ASSIGN @Meter TO 717
20 REMOTE @Meter
30 OUTPUT @Meter;"*RST;*CLS"
40 OUTPUT @Meter;"TRIG:SOUR BUS"
50 OUTPUT @Meter;"ABORT;:INIT"
60 OUTPUT @Meter;"TRIGGER:IMMEDIATE"
70 OUTPUT @Meter;"FETCH?"
80 ENTER @Meter;A,B,C
90 PRINT A,B,C
100 END
Figure 7-11. TRIGger:IMMediate Command Sample Program
10 ASSIGN @Meter TO 717
20 REMOTE @Meter
30 OUTPUT @Meter;"*RST;*CLS"
40 OUTPUT @Meter;"TRIG:SOUR BUS"
50 OUTPUT @Meter;"ABORT;:INIT"
60 OUTPUT @Meter;"*TRG"
70 ENTER @Meter;A,B,C
80 PRINT A,B,C
90 END
Figure 7-12. *TRG or GET Command Sample Program
7-14 Remote Control