User`s manual

5. Select the Output Load Value
OUTPut[1]:LOAD <load>
This command selects the load value expected at the "Output 50/75 Ω"
terminals. The values are:
50 – for 50 Ω loads; must be same as output impedance.
75 – for 75 Ω loads; must be same as output impedance.
9.9E+37 or INFinity – for open circuit; output value is twice
the normal matched load output value.
6. Initiate the Waveform
INITiate[:IMMediate]
This command generates an immediate output with the arm source set
to
IMMediate. Refer to Chapter 5 for triggering information.
BASIC Program Example (OUTPLOAD)
1 !RE-STORE“OUTPLOAD”
2 !This program sets the AFG’s output impedance and output load
3 !to 75 ohms.
4 !
10 !Assign I/O path between the computer and E1445A.
20 ASSIGN @Afg TO 70910.
30 COM @Afg
40 !
50 !Set up error checking
60 ON INTR 7 CALL Errmsg
70 ENABLE INTR 7;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 Out_load
150 !
160 WAIT .1 !allow interrupt to be serviced
170 OFF INTR 7
180 END
190 !
200 SUB Out_load
210 Out_load: !Subprogram which sets the output load
220 COM @Afg
230 OUTPUT @Afg;“SOUR:VOLT:LEV:IMM:AMPL 5V;”; !amplitude
240 OUTPUT @Afg;“:OUTP:LOAD:AUTO OFF;”; !decouple load from impedance
250 OUTPUT @Afg;“:OUTP:IMP 75;”; !output impedance
260 OUTPUT @Afg;“:OUTP:LOAD 75” !output load
270 OUTPUT @Afg;“INIT:IMM” !wait-for-arm state
280 SUBEND
290 !
Continued on Next Page
70 Generating Standard Waveforms Chapter 2