Thales Z-Max Operation And Application Manual page 45

cycles, or about once a month, whichever comes first. The Power Module should also
be conditioned after prolonged periods when the battery has been stored while not
connected to the charger.
Conditioning is a three-step process. The first step charges the battery to capacity,
the second step discharges the battery at a constant rate. The third step again
charges the battery to capacity. There are two methods for conditioning the Power
Module. The first method relies completely on the charger to do the calibration. The
second method uses both the receiver and the charger.
To condition the Power Module with the charger:
1. Remove the Power Module from the GPS Receiver Module.
2. Plug the charger into an electrical socket.
3. Push the Power Module pushbutton that controls the Power Module LEDs
4. While continuing to push the button, plug the charger into the Power Module.
This combination of pushing the button and plugging in the charger will
initiate the conditioning sequence.
The entire conditioning process (all three steps) will take up to 18 hours for the
Max-Run Power Module and up to 12 hours for the Max-Lite Power Module.
While calibration is in progress, the status lights on the charger will indicate the
following:
• Yellow - Calibrate mode is in progress
• Off - Calibration completed
The duration of the conditioning process can be shortened by using a combination of
the receiver and the charger to perform the calibration process.
To condition the Power Module with the receiver and the charger:
1. Use the charger to fully charge the Power Module.
2. Attach the fully-charged Power Module to the receiver, and use the receiver
normally until the Power Module is completely discharged and the receiver
shuts itself off.
3. Use the charger to fully recharge the Power Module.
There are two important things to remember using this method. First, do not recharge
the battery until is has fully discharged. Secondly, you do not have to run the battery
down all in one day. You may use the receiver for several hours, turn it off, and
resume the next day. But do not let it sit idle for several days or the conditioning
sequence will reset. The key is consistent and steady discharge over a short period of
time (1-3 days). This method requires a little more attention, but allows you to use the
receiver as you are simultaneously conditioning it.
22 Z-Max Surveying System Operation and Applications Manual