Power Supply and Charging
The Model 940A can operate from the included power sup-
ply/charger, or from the internal Li-ion batteries. Internal batteries
consist of four 2250 milliampere hour Li-ion cells, which should be
able to operate the 940A for up to 18 hours with reduced backlight.
Battery charging
A micro USB connector is used to connect the included battery
charger/power supply to 940A. Depending on the state of charge,
charging time should be less than 8 hours, or longer if the batteries
are completely depleted. Fully charged, the 940A should operate
for up to 24 hours with the display backlight set to 20 percent
brightness, and the flash light and the speaker switched off.
Operating with Power Supply/Charger
With the included power adapter/charger connected, the 940A
should operate indefinitely.
Powering ON or OFF
Press
(the ON/OFF button) at the bottom of the front panel
to energize and de-energize the 940A.
Battery Indication
100%
Charged, not connected to charger
52% H
Charging High, connected to charger
15%
Battery very low, connect to charger!
Charging Characteristics
While charging, text below the battery symbol indicates the per-
centage of charge remaining and a small letter to indicates the
charge rate, which depends on the type of charger and USB cable.
Three letters indicate the charging rate: L for low (100 mA),
M for medium (500 mA) and H for high (1000 mA – with included
charger/cable). Both the AC Adapter/Charger and the cable con-
tribute to the charging rate.
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Summary of Contents for 940A
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