Agilent Technologies 4294A Service Manual download pdf (Page 75)

100

101

Chapter 5 75

Starting a Measurement (Trigger) and Detecting the Completion of a Measurement

(End of Sweeps)

Waiting for the Completion of One or More Sweeps (Detecting the

Completion of a Measurement)

1. Chapter Title

2. Chapter Title 3. Chapter Title

4. Chapter Title

5. Starting a Measurement(Trigger)

and Detecting the Completion of a

Measurement(End of Sweeps)

Lines 30 to 90 Identifies the external controller and Instrument BASIC and sets the

GPIB address and the select code.

Lines 110 to 130 Sets the trigger source to the internal trigger and sets the sweep

averaging factor to 4.

Lines 150 to 160 Enables Bit 0 (sweep completion bit) in the instrument event status

NOTE In addition to the sweep completion bit, another bit is provided separately to indicate the

completion of data measurements for adapter setting, user calibration, and fixture

compensation. To detect the completion of these measurements, enable Bit 8 in the

instrument event status register.

Lines 170 to 190 Clears the status byte register and the instrument event status register.

Lines 210 to 220 Sets the branch destination for the SRQ interrupt and enables the SRQ

interrupt can be used.

Line 230 Executes the command to perform four sweeps.

Line 250 Waits for the completion of the sweeps.

Line 260 Displays the sweep completion message.

Example 5-1 Detecting the completion of sweeps using an SRQ

10 DIM Buff$[9]

20 INTEGER Scode

30 IF SYSTEM$("SYSTEM ID")="HP4294A" THEN

40 ASSIGN @Hp4294a TO 800

50 Scode=8

60 ELSE

70 ASSIGN @Hp4294a TO 717

80 Scode=7

90 END IF

100 !

110 OUTPUT @Hp4294a;"TRGS INT"

120 OUTPUT @Hp4294a;"AVERFACT 4"

130 OUTPUT @Hp4294a;"AVER ON"

140 !

150 OUTPUT @Hp4294a;"ESNB 1"

160 OUTPUT @Hp4294a;"*SRE 4"

170 OUTPUT @Hp4294a;"*CLS"

180 OUTPUT @Hp4294a;"*OPC?"

190 ENTER @Hp4294a;Buff$

200 !

210 ON INTR Scode GOTO Swp_end

220 ENABLE INTR Scode;2

230 OUTPUT @Hp4294a;"NUMG 4"

240 PRINT "Waiting..."

250 Swp_wait: GOTO Swp_wait

260 Swp_end: PRINT "Sweep Complete"

270 END

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Agilent Technologies 4294A Service Manual Page 75

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