Human Humalyzer 2000 - Main PCB

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Rev. B 9
Main PCB
Under normal circumstances, there are no adjustments to be made to the main PCB. Circuit
failures are highly unlikely, but if they occur, it is recommended that the repairs be performed by
factory authorized technicians. There are ten test points on J8 which provide access to a number
of vital signals. The instrument can be observed in operation with an oscilloscope. Typical test
point waveforms are shown in Figure 4.
WAVEFORMS MEASURED AT J8 WHILE READING BLANK 12 mm BOROSILICATE TUBE WITH 1 mi WATER
I tin ONE REV OF FILTER WHEEL = 340 ms DURING READINGS ーー νὶ
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BASELINE HASH OPTIONAL
4 340 nm FILTERS 630 nm 580 nm 545 nm 505 nm 405 nm
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Figure 4. Test point waveforms
Humalyzer 2000 Service Manual i aa
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