Agilent Technologies 8960 Series Reference Manual page 128

Step 5: INITiate and FETCh Measurements
Validate Measurement Results Validating measurement results is extremely important. The test set
returns a result if it is capable of making a measurement, even if this result is obtained under adverse
conditions.
The measurement integrity indicator is a measurement result and therefore is queried using the FETCh
subsystem. A value of 0 indicates that the measurement is valid. A value other than 0 indicates that an error
occurred during the measurement process.
Example Integrity Indicators
Value Returned
Example 13. Programming Example
OUTPUT Test_set;"FETC:DTXP?"
ENTER Test_set;Integrity,Avg_dig_pow
IF Integrity=0 THEN
PRINT "AVG DIG POW= ";Avg_dig_pow
ELSE
PRINT "DTXP Measurement Error"
PRINT "DTXP Measurement Integrity is ";Integrity
END IF
Alternative Measurement Process
You may choose to test in a sequential way rather than use the concurrent measurement process.
For instance, instead of using the INIT:DONE? query to determine when a measurement is complete, you may
choose to initiate a set of measurements and then simply fetch them sequentially.
Example 14. Programming Example
OUTPUT Test_set; "INIT:DTXP;MACC"
OUTPUT Test_set; "FETC:DTXP:POW?"
ENTER Test_set;Avg_dig_pow
OUTPUT Test_set; "FETC:MACC:EVM[1]?"
ENTER Test_set;Max_EVM1
In this example, the test set starts both measurements at the same time. However, if the MACC measurement
finishes first, the results are not fetched until the DTXP measurement finishes. Therefore, this process
requires that you understand the order in which measurements will complete in order to optimize your testing
speed.
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S:\Hp8960\E1963A WCDMA\4.0 release\Reference Guide\Chapters\wcdma_prog_generic_step5.fm
Description
(message also appears on test set)
0 Normal
1 No Result Available
2 Measurement Timeout
5 Over Range
6 Under Range