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and may be restored by cycling the battery pack
through several complete charge/discharge cycles.
The battery pack is capable of 500 to 1000 charge/
discharge cycles before a replacement is needed.
3.2.2 Sensor Connection/Removal
NOTE
Both the Detector Cal Module and the Model 818-F
Series Detector/Memory Module combinations are
installed and removed in the same manner.
CAUTION
Turn the unit off, before installing or removing any
memory module.
Align the line on the memory module with the mark on
the head of the Model 840-C power meter (See Fig. 3).
Slide the module into the tube until the 8-pin sub-mini DIN
connector begins to engage. Some small rotational
adjustment of the module may be necessary when
engaging the connector. Once engaged, firmly push the
module in until the connectors are fully engaged.
To remove the module, grasp firmly and pull straight out.
Figure 3 Detector Cal Module Installation
B
1
0
Alignment Marks
Cal Module
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