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KSW
Error Correction Routine
The KSW command executes a built-in error correction routine. This routine takes approximately 30 seconds to
run and when completed, the instrument returns to its previous state. The functions of the KSW command and
the front panel @ W
The error correction routine measures and records the amplitude and frequency error factors with reference to the
100 MHz calibration output (CAL OUT) signal, the 1 MHz resolution bandwidth, the 10 dB input attenuator, and
the step gains. The "CORR'D" message to the left of the graticule indicates the routine has been run and the
display has been corrected.
Use the error correction routine to ensure data has been corrected to the most recent calibration.
Before executing KSW, recall registers 8 and 9, follow the calibration procedure described in the introduction in
Section I.
10
OTJTPUT 718;"RCLS 8;"
20
PAUSE
30
OUTPUT 718; "RCLS 9;"
40
PAUSE
50
When the routine is completed, the error correction data can be displayed on the CRT with the KSw (display
correction data) command. (See KSw.)
Accuracy of an amplitude measurement can be improved by taking advantage of the correction data stored in the
analyzer by the KSW command. For additional information on improving the amplitude accuracy, see the KS91
command.
162 Programming
keys are identical.
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