Calibration Unit JBE-2 is needed for the resistance, current- and voltage calibrations of a RAE-5 Communicator. These calibrations are needed so that the charging situation would be precise enough.
The JBE-2 is also the voltage source for the BBL-3B service battery. JBE-2 is the only service equipment which can provide enough current for any service case. Power output of FPS-8 flash prommer can not provide enough current in cases of tuning and calling and is ment to be used only for flashing purposes.
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