Hint: the BARs that came with your software are designed to minimize the chance of your overwriting them
(specifically, the Owner field is filled in), but if you do, you can get a new copy from your install CD in the
Image/BARs folder.
See Appendix C for a list of the BARs included with UBA Console.
5. Advanced Topics
5.1. Choosing and Setting Up a Power Supply
The UBA requires a 15 to 24V DC voltage at sufficient current to power both its internal chargers. The voltage needs
to be at least 3V greater than the maximum battery pack voltage during charge (for NiCds and NiMH this would be
about 1.6V per cell, for sealed lead acid: 2.5V per cell and for Li-ion: 4.2V per cell). An unregulated power supply can
be used, but the charge current measurements will be less accurate.
If you are using a power supply that can’t provide the full 2A per channel charge current with an additional 250mA for
the UBA itself then you can set the UBA to limit the current that it draws. This is done in the calibration file or entered
manually each time UBA Console is run, as explained below.
Power Supply Description Lines in Calibration File
Each UBA has its own calibration file (xxxx.uba, where xxxx is the serial number of the UBA). In the calibration file
there’s three lines that describe the power supply that’s powering the UBA.
For example, the 19V 4.5A power supply that comes with the UBA5GP combo is described as follows:
PowerSupplyV: 19
PowerSupplyI: 4.5
PowerSupplyR: 0
If you purchased a UBA combo from us then we’ve already entered the power supply parameters into the calibration
file. If the UBA is used with a different power supply or if it wasn't purchased as a combo then you can edit the
calibration file to prevent overloading of the power supply. An overloaded power supply will either shut down, drop the
output voltage or burn out.
You can edit these lines with a text editor (notepad works fine). UBA Console only uses the maximum current value
(
PowerSupplyI
), the voltage and resistance lines are ignored, but the voltage value should be filled in for future
compatibility. Note, a value of 0 for the power supply current means that no current limiting is necessary (i.e. your
power supply has a current output of at least 4.25A).
Temporarily Changing the Power Supply Current Limit
You can view the current limit by clicking on the "General" tab in the UBA Window:
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The UBA Let's Get Started Guide
