PRO-50  (200-0307)               Adapters              Faxback Doc. # 6193

IMPORTANT INFORMATION ABOUT THE EXTERNAL POWER JACKS

The scanner has two external power jacks - PWR and CHG.  It is important
that you understand the purpose of each jack before you connect any
adapter to the scanner.

The PWR jack powers the scanner and disconnects the internal batteries.
You can use this jack with an external power source (AC or DC adapter)
regardless of the type of batteries you install.

The CHG jack supplies power to operate the scanner and also charges the
internal batteries.  Use the CHG jack only when you install rechargeable
nickel-cadmium batteries.

Warning:  Never use the CHG jack with non-rechargeable batteries!  If you
          try to recharge non-rechargeable batteries, they become very hot
          and could explode.

USING AN AC POWER SOURCE

To power the scanner from AC power, you need Radio Shack's AC adapter 
(Cat. No. 20-188).  Plug the adapter's barrel plug into the PRO-50's PWR 
jack.  Then plug the adapter's power module into a standard AC outlet.

When you finish using the AC adapter, disconnect it from the AC outlet
first.  Then, disconnect it from the scanner.

Note:  If you have installed rechargeable nickel-cadmium batteries in the
       scanner, you can connect the AC adapter to the CHG jack.  This
       powers the scanner and recharges the batteries at the same time.
       See "Charging Nickel-Cadmium Batteries."

USING A DC ADAPTER

Note:  Mobile use of a scanner may be unlawful or require a permit in some
       areas.  Check the laws in your area.

You can power the scanner from your vehicle's cigarette lighter socket,
provided the vehicle has a 12-volt, negative-ground electrical system.
To do so, you need Radio Shack's Universal DC Adapter (Cat No. 270-1560A).

Cautions:  You must use a DC adapter that supplies 9 volts with the center
           tip set to negative.  It must deliver at least 300 milliamps,
           and its plug must properly fit the receiver's PWR jack.  Using
           an adapter that does not meet these specifications could damage
           the receiver or the adapter.

           Your vehicle must have a 12-volt DC, negative-ground electrical
           system.

           To protect your vehicle's electrical system, be sure the
           adapter is connected to the cigarette-lighter socket only when
           it is also connected to the receiver.

1.  Connect the adapter's orange barrel plug to the adapter's cable with
    the tip set to-(negative).

2.  Set the adapter's voltage switch to 9V.

3.  Insert the barrel plug into the scanner's PWR jack.

4.  Plug the other end of the adapter into your vehicle's cigarette
    lighter socket.

When you finish using the DC adapter, disconnect it from the cigarette
lighter first.  Then, disconnect it from the scanner.

Note:  If you have installed rechargeable nickel-cadmium batteries in the
       scanner, you can connect the DC adapter to the CHG jack.  This
       powers the scanner and recharges the batteries at the same time.
       See "Charging Nickel-Cadmium Batteries" and the warning there.

       If the scanner does not operate properly when using a DC adapter,
       unplug the adapter from the lighter socket and clean the socket to
       remove ashes and other debris.

CHARGING NICKEL-CADMIUM BATTERIES

The scanner has a built-in charging circuit that lets you charge nickel-
cadmium batteries (Cat. No. 23-125) while they are in the scanner.  To
recharge the batteries, simply connect an AC adapter (Cat. No. 20-188)
or a DC adapter (Cat. No. 270-1560A) to the scanner's CHG jack.

Warning:  Do not connect either adapter to the scanner's CHG jack if you
installed non-rechargeable batteries (standard, extra-life, or alkaline).
Non-rechargeable batteries become hot and can even explode if you try to
recharge them.

It takes about 10 to 18 hours to recharge batteries that are fully
discharged.  You can operate the scanner while recharging NICKEL-CADMIUM
batteries, but the charging time is lengthened.

Charging Tip:  NICKEL-CADMIUM batteries last longer and deliver more power
if you occasionally let them fully discharge.  To do this, simply use the
scanner until the low battery indicator appears on the display.  Then 
fully charge the batteries.

NICAD BATTERY DISPOSAL

This product is capable of using rechargeable nickel cadmium batteries.
At the end of the batteries' useful life, they must be recycled or
disposed of properly.  Contact your local county, or state hazardous waste
management authorities for information on recycling or disposal programs
in your area.  Some options that might be available are: municipal curb-
side collection.  Drop-off boxes at retailers, recycling collection 
centers, and mail-back programs.

(rlr/all-7/6/94)