R3131 Spectrum Analyzer Operation Manual
10 Spa=708
Set GPIB address (8) in a variable.
20
OUTPUT Spa;"SI"
Set in single sweeping mode.
30
ON INTR 7 GOSUB Ssrq
Define the SRQ interrupt processing
routine.
40
OUTPUT Spa;"*CLS"
Clear the status byte.
50
OUTPUT Spa;"OPR8"
Make the Sweep-end bit of the
60
operation status register enable.
70
OUTPUT Spa;"*SRE128"
Make the Operation Status bit of
80
the status byte enable.
90
OUTPUT Spa;"SO"
Specify the sending out mode of SRQ
signal.
100 Mloop:
110 Mend=0
Clear the Sweep-end flag.
120
OUTPUT Spa;"SR"
Begin the sweeping.
130
ENABLE INTR 7;2
Make the SRQ interruption enable.
140
Wint:
150
IF Mend=0 TEHN GOTO Wint
Wait until SRQ interruption occurs.
160
OUTPUT Spa;"PS"
Execute the peak search.
170
OUTPUT Spa;"MFL?"
Request the output of the marker data.
180
ENTER Spa;MF,ML
Read the peak frequency and the level.
190
PRINT "Peak Freq:";MF;" ,Peak Level:";ML
Display the read data.
200
GOTO Mloop
Repeat the sweeping.
210
220 Ssrq:
SRQ interrupt processing routine.
230
S=SPOLL(Spa)
Read the status byte.
240 Mencl
Set the Sweep-end flag in one.
250 RETURN
Return to the main routine.
260
270
END
4.1 GPIB Remote Programming
Example HP-17: Read both the peak frequency and the level at the end of a single sweep (when
using SRQ signal).
4-46
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