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Functional Overview
WFM90D and WFM91D Service Manual
2-11
CAUTION. DC Power Source
To avoid possible damage to the instrument circuitry when using a DC power
source other than the supplied AC adapter, ensure that the DC source is a
negative-ground 11 -- 18 V system with a negative center lead. The DC source
should be able to provide 12 W of power.
DC IN11-18V
Figure 2- 7: WFM90D and WFM91D side panels