Agilent Technologies 4294A Service Manual download pdf (Page 93)

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Chapter 6 93

Reading/Writing Measurement Data

Reading/Writing Data

6. Reading/Writing

2. Chapter Title 3. Chapter Title

4. Chapter Title

5. Chapter Title

Measurement Data

1250 PRINT "-- Trace A All Pass --"

1260 END IF

1270 !

1280 OUTPUT @Hp4294a;"TRAC B"

1290 OUTPUT @Hp4294a;"OUTPFAIP?"

1300 ENTER @Hp4294a;Fail_nop

1310 !

1320 IF Fail_nop>0 THEN

1330 OUTPUT @Hp4294a;"FORM4"

1340 OUTPUT @Hp4294a;"OUTPLIMF?"

1350 FOR I=1 TO Fail_nop

1360 ENTER @Hp4294a USING "#,K,K,K,K";Fail_res_b(I,1),Fail_res_b(I,

2),Fail_res_b(I,3),Fail_res_b(I,4)

1370 NEXT I

1380 PRINT "-- Trace B Failed Point --"

1390 PRINT "Frequency L_Limit U_Limit"

1400 FOR I=1 TO Fail_nop

1410 PRINT Fail_res_b(I,1),Fail_res_b(I,4),Fail_res_b(I,3)

1420 NEXT I

1430 ELSE

1440 PRINT "-- Trace B All Pass --"

1450 END IF

1460 !

1470 END

When to read/write data

If a read command is executed while a sweep is in progress, the data available when the

command execution starts is read. To ensure the accuracy of the data you obtain, be sure to

wait until the current sweep is complete before executing a read command. Considering the

time it takes for your program to be executed to completion, an efficient approach is to

synchronize the execution of a read command with the completion of the current sweep. To

do this, use the status report structure and the

“*OPC?” command on page 259. See

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

Measurement)” on page 74 for more information.

To write data properly, you need to execute a write command while no sweep is in

progress. You can write data while a sweep is in progress. In this case, however, the data

you write will be overwritten. You can suspend the sweep by executing the

“HOLD”

command on page 318.

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