Zonge GDP-32 - Page 368

GDP-32
II
INSTRUCTION MANUAL
May 2002 Section 17, Page 22
Checking battery connections
Zero battery voltage can indicate a disconnected battery cable or a blown fuse. Check the fuses
and then enter the battery compartment and check for good connections at the terminals for each
battery, the 3-pin white Molex connector, and at the terminal block (on the GDP-32
II
large case)
as shown in Figure 16.8(b).
Checking the battery compartment
If a zero battery voltage still exists check the battery compartment for the following:
Improperly inserted batteries
Water in the battery compartment
Bad batteries
Checking for a bad battery
If you are in the field and wish to continue fieldwork without interruption, replace the batteries
as described below.
To check for a dead or low battery directly:
1. Follow the instructions above to access the battery compartment.
2. Use a voltmeter to check the voltage on each battery. When fully charged, the battery
voltage should be approximately 6.8 volts. The battery is not operational without
charging if the voltage is less than 5.8 volts.
REPLACING BATTERIES
Batteries are good for several hundred charges. It is usually good practice to replace all batteries
in a pack if one goes bad.
If you need battery power to supplement exhausted batteries in the field, plug a 12-volt battery
into the Battery Charge Port using a special cable available from Zonge Engineering.
MAKE SURE YOU HAVE THE POLARITY CORRECT: PIN A IS POSITIVE 12V, PIN B IS
NEGATIVE.
Replacing Batteries without losing power – Large Case
If there is power to the receiver but the batteries are getting low, the batteries can be replaced
while retaining power (thereby maintaining synchronization with the XMT-32 Transmitter
Controller). This is accomplished with a spare set of batteries mounted in a spare battery
compartment panel with the proper connector attached.
1. Leave the used batteries plugged in.
2. Plug the charged spare battery pack into connector J2 (Figure 16.7(c)).
3. Disconnect the used batteries from connector J1. The receiver is now powered by the
backup battery pack.
4. Connect the new battery compartment to the receiver. The receiver is ready to resume
operation.