Martel Electronics 320 - Manual (Page 7)

desired. The LPS is stored in a pouch under the
Model 320 calibrator for easy access.
BATTERY CHARGING
Units are shipped with the internal batteries in an
uncharged state. Before using the Model 320 or the
LPS as a portable unit, it is necessary to charge the
batteries for a minimum of 14 to 16 hours. The
calibrator battery charger is a wall plug-in type (see
below) that connects to a jack on the right-hand side
of the instrument. Battery operation time is 50 hours,
typically for the Model 320 and 6 hours nominal at 20
milliamps for the LPS.
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