User`s manual

BASIC Program Example (SWP_TRIG)
1 !RE-STORE"SWP_TRIG"
2 !This program triggers a sweep using the Group Execute
3 !Trigger command. The sweep is from 1 kHz to 1 MHz.
4 !
10 !Assign I/O path between the computer and E1445A.
20 ASSIGN @Afg TO 80910.
30 COM @Afg
40 !
50 !Set up error checking
60 ON INTR 8 CALL Errmsg
70 ENABLE INTR 8;2
80 OUTPUT @Afg;"*CLS"
90 OUTPUT @Afg;"*SRE 32"
100 OUTPUT @Afg;"*ESE 60"
110 !
120 !Call the subprograms
130 CALL Rst
140 CALL Swp_trig
150 !
160 WAIT .1 !allow interrupt to be serviced
170 OFF INTR 8
180 END
190 !
200 SUB Swp_trig
210 Swp_trig: !Subprogram that triggers a sweep
220 COM @Afg
230 OUTPUT @Afg;"SOUR:FREQ1:MODE SWE;"; !Sweep mode
240 OUTPUT @Afg;" :SOUR:FREQ1:STAR 1E3;"; !start frequency
250 OUTPUT @Afg;" :SOUR:FREQ1:STOP 1E6;"; !stop frequency
260 OUTPUT @Afg;" :SOUR:SWE:COUN INF;"; !repetition count
270 OUTPUT @Afg;" :SOUR:SWE:POIN 100;"; !frequency points
280 OUTPUT @Afg;" :SOUR:SWE:TIME .13" !sweep time
290 OUTPUT @Afg;"ARM:SWE:SOUR LINK" !trigger mode
300 OUTPUT @Afg;"ARM:STAR:LAY1:COUN 65536" !waveform repetitions
310 OUTPUT @Afg;"ARM:STAR:LAY2:COUN INF" !waveform starts
320 OUTPUT @Afg;"ARM:STAR:LAY2:SOUR BUS" !trigger source
330 OUTPUT @Afg;":SOUR:FUNC:SHAP SIN;"; !function
340 OUTPUT @Afg;":SOUR:VOLT:LEV:IMM:AMPL 5 V" !amplitude
350 OUTPUT @Afg;"INIT:IMM" !wait-for-arm state
360 CALL Step
370 SUBEND
380 !
390 SUB Step
400 Step: !Subprogram which starts sweep
410 COM @Afg
420 DISP “Press ’Continue’ when ready to start a sweep”
430 PAUSE
440 TRIGGER @Afg !trigger AFG
Continued on Next Page
188 Arming and Triggering Chapter 5