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Introduction
This chapter adds some details about GMM operation and
measurement connections.
Battery Considerations
New alkaline (AA) cells provide a minimum of 4 hours
operation. A fully charged NiCd battery pack (BP7217)
typically provides 8 hours operation. Connect the battery
eliminator to recharge the NiCd battery pack for the 867B.
Fully charge the battery pack before using the 867B.
External charging (use Battery Charger BC-7210 - not
provided) must be used to charge a NiCd battery pack for
Model 863. Refer to Chapter 7 (User Maintenance). Model
867B uses an internal two-state charger. The initial
charge state is at approximately 170 mA (±30 mA) to
allow for full overnight charging (16 hours minimum). The
Some General Descriptions
second charge state is at approximately 40 mA (±15 mA)
to allow for battery charge maintenance without full
charging from a discharged condition.
Display Blanking (Sleep Mode)
During battery operation the display will blank after about
20 minutes if no controls have been changed. Press the
wake up key once to restore the display.
If the battery eliminator is connected, these battery saving
features are not used. If a time-dependent measurement
(Min Max, Trend, etc.) is in progress during battery
operation, the backlight will go off after 20 minutes, but
the Model 863 display will not blank until a low battery
condition is reached. When the display blanks, no
measurements are taken.
Chapter 3
3-1
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