User's Manual

A-5
• JP4, the Battery Recharge Jumper, exists on the LT71/T71 only, (the
LT73/T73 is only recharging). This jumper's setting is determined by
what type of batteries you plan to use in the RF Terminal. Either
alkaline (including Alkaline rechargeables), Nickel Metal Hydride
rechargeable batteries or NiCad rechargeables may be used. If you are
using rechargeable batteries, there is recharging circuitry built in to the
R/F Terminal. To use the recharging circuitry, you must change jumper
JP4, then plug in our F10 5v Power Adapter. The F10 Power Adapter is
a separate item and must be ordered in addition to the R/F Terminal.
By default, the R/F Terminal is set up to use regular Alkaline batteries
with the recharging circuitry OFF. If you are going to use the
recharging feature, be VERY CAREFUL to double-check the
jumper setting. Plugging the power supply in when you have
regular Alkaline batteries in the R/F Terminal but the jumper set for
recharging can cause some serious damage. Only use rechargeable
batteries (Alkaline, NiMH, NiCad) if using the recharging feature.
The jumper inside the R/F Terminal is located above the AUX jack
and is labeled JP4.
The jumper must cover BOTH pins in order for the recharging to
work. See the diagram of the R/F Terminal on the previous page for
details on JP4's location. Recharging takes approximately 8 hours for
a full charge if batteries are fully discharged first.
If you decide to use rechargeable batteries, be sure to change the
setting in Speaker/Batteries to rechargeables to avoid many problems.
• The volume of the speaker can be increased or decreased in loudness
by adjusting a tiny potentiometer inside the R/F Terminal. Locate
the volume adjustment, (right next to the speaker jack) and make
adjustments within the red lines marked on the potentiometer. Use a
knife or a very fine blade flat screwdriver to turn the volume control.
Turn it clockwise to increase volume. Turn it counter clockwise to
decrease the volume.
If you are in a noisy environment, you may prefer the T12 Headphone,
which plugs into the AUX jack on the bottom of the R/F Terminal. If
using the headphone, you will probably want to turn off the speaker to
conserve power. You can do this by entering the SETUP MODE and
specifying 1 for Speaker OFF. You can control the Headphone
volume independently by using the volume control built into the
Headphone cable.