Ritron jmx-102 Betriebsanweisung

For assistance, call 800-USA-1-USA  (800-872-1872)

Due to the extended run time of the JMX-102 radio, some users may never
fully discharge the NiCad battery pack during normal use. Achieve max-
imum battery life by fully discharging the battery periodically to condition it.

After exposing the battery pack to many cycles of not fully discharging it
before recharging, the radio may exhibit reduced battery capacity. This
reduced capacity is evident when, after several hours of use, battery
voltage drops while the radio is transmitting, causing the radio to emit a
dead battery warning tone and shut itself off.

Condition battery packs by the following procedure as either a preventive
measure, or if you suspect reduced capacity:

1. • Use your radio throughout a normal work day without charging.

2. • Press and hold the On/ Volume Up and Volume Down/ Off buttons

simultaneously for 8 seconds to place the radio in "open squelch"
mode.

• Release both buttons when you hear the radio beep rapidly; it will

then emit a loud "rushing" noise. Press On/ Volume Up to maximize
this noise.

3. • Put the radio away in a secure place (possibly a desk drawer),

where nothing can press against the buttons to accidentally turn it off
or cause it to transmit. Allow the radio to run until it shuts off when
the battery is completely discharged. A typical battery pack may
require about 8 hours to completely discharge.

4. • When the radio has shut off, charge it overnight for 12-14 hours. The

battery will be ready for use with renewed capacity.

A new battery must be charged and discharged several times
before it can reach its maximum charge capacity.

Because the battery pack loses its charge during storage and shipment, fully
charge it before first use. To ensure peak radio performance for the next day, charge
the battery overnight after each day of use. It charges completely in about ten hours.

Plug the charger cord into the charge jack (marked "CHG") on top of the radio. Then plug
the cube into an 110 VAC outlet. The green lamp lights while the battery is charging, and
should go out only when the cube or cord is unplugged.

Two charger contacts—visible through the radio case bottom—permit charging the
battery with an optional Ritron drop-in charger. The battery pack may be either charged
inside the radio case, or removed from the radio case for charging. Each drop-in
charger comes with a spacer to permit charging a "spare" battery.

To use the drop-in charger, plug it into a 110 VAC outlet. Set either the radio with the
battery installed, or only the battery inside the battery spacer, into the charger. Refer to
the illustration in OPTIONAL CHARGING ACCESSORIES, opposite. Each battery contact
must rest on a charger contact pin.

• CONDITION battery packs once a month as directed in Battery Maintenance & Conditioning, at right.

• CONDITION batteries that are run down. See Battery Maintenance & Conditioning, at right.

• CHARGE batteries for 16 hours before storage, and for 16 hours once a month thereafter.

• DO NOT overcharge batteries. Unplug the cube charger after 16 hours to avoid overcharging.

• DO NOT charge batteries in temperatures colder than about 45

°

F. Charging batteries in temperatures

above 95

°

F. does not harm them, but can reduce charge capacity.