73
Performance checking
Signal Generator
pre-2003 model
13. Detach the black Connection Lead from the Function
Checker terminal (leaving the red Connection Lead attached)
and confirm that the pitch of the audio rises.
14. Now plug the yellow 10m Auxiliary Earth Lead into
the green socket on the Signal Generator and attach the
crocodile clip to the unused terminal on the Function Checker.
CORRECT RESULT
: The audio response should change to a lower pitch as the crocodile clip is attached to the terminal.
The Function Checker bar graph should show an indication of 1/3 full scale and the ‘33kHz’ icon should show in the top
left hand corner on the Function Checker display.
NOTE
If the CORRECT RESULT is not achieved, the cause may be a faulty 10m Auxiliary Earth Lead.
Replace with a good lead and try the test again.
If all of the ‘Condition Checks’ (pages 11-12) and ‘Performance Checks’ (pages 69-73) have been completed
successfully then the Signal Generator is operating correctly.
Function Checker
