- OMEGA OMB-DBK Option Cards/Module User Guide

Charging the Battery Module
To charge the DBK30A batteries:
1. Connect the adapter to DBK30A’s POWER IN connector.
2. Plug the adapter into the AC power receptacle.
Note: The charge cycle will begin automatically whenever AC power is applied after an interruption. The
charge cycle will automatically end when the batteries are fully charged.
Charging DBK30A’s Batteries
3. To manually initiate a charge cycle, press the START CHARGE momentary rocker-arm switch.
Note that subsequent charge cycles applied to a fully-charged DBK30A will have no ill effect. The
module will sense the fully-charged status and revert to the trickle-charge state within a few
minutes.
Three LEDs on the DBK30A provide status information on the charging process or the external load.
LED Indicators & Descriptions
POWER IN
Indicates the charger is connected to a source of AC power and to the battery module.
BATTERY CHARGING
Steady Light - Indicates the battery is in the high-current (2 A) charge mode.
Flashing - One or two flashes at a time indicates the batteries are fully charged.
POWER OUT
Indicates power is flowing out to an external device.
CAUTION
Periodically, fully discharge the DBK30A to inhibit “lazy chemistry” (memory) in the
nickel-cadmium cells. To manually discharge a battery pack, connect the primary
acquisition device, e.g., WaveBook, DaqBook, or LogBook, to the DBK30A and leave
it powered-on until the indicator lights go out.
Use While Charging.
• Both operating modes are capable of powering data acquisition devices while the DBK30A is being
charged; however, the charging current will be reduced, and the charging time will increase.
• If AC power is interrupted, a new charge cycle will begin automatically when AC power returns.
CAUTION
Even with the AC adapter, the batteries will eventually discharge under an operating
load. Charging DOES NOT BEGIN AUTOMATICALLY (except on power-up). You
must manually initiate the next charge cycle. Do not expect a device powered by a
DBK30A to operate as if connected to an uninterruptable power supply.
DBK Option Cards and Modules 879795 DBK30A, pg. 5