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Operating Information
WFM 90 and WFM 91 Service Manual
2–7
DC IN 11-18V
Figure 2–4: Instrument side panels
DC Input Power Connector. The DC IN power connector is a 2 mm plug which
accepts a 12 VDC power input, ranging from +11 V to +18 V, using a negative
center lead.
CAUTION. 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 V to +18 V system with a negative center lead. The DC
source should be able to provide 12 W of power.