PRO-27 20-Channel Programmable Scanner
(200-0507)                 Power Sources              Faxback Doc. # 31204

CONNECTING TO POWER

You can power your scanner from any of these three sources:

    Internal batteries (not supplied)

    Standard AC power (using an optional AC adapter, Cat. No. 273-1652)

    Your vehicle's battery (using an optional DC adapter, Cat. No. 270-1533)

Using Internal Battery Power

You can power your scanner from four AA batteries.  For the best results
and longest battery life, we recommend alkaline batteries (such as
Cat. No. 23-552).

NOTE:  You can also power your scanner from rechargeable nickel-cadmium
       (Ni-Cd) batteries (such as Cat. No. 23-125.)

Follow these steps to install batteries.

1.  If the scanner is on, turn VOLUME/OFF counterclockwise until it clicks
    to turn it off.

2.  Press on the bottom center of the battery compartment cover and lift
    it off.

3.  Remove the batteries from the battery compartment and the cover
    (if necessary).

4.  Install two fresh batteries in the compartment and two in the cover as
    indicated by the polarity symbols (+ and -) marked inside.

    CAUTIONS:  Never mix rechargeable and non-rechargeable batteries.

               Use only fresh batteries of the required size and type.
               Always remove old or weak batteries.  Batteries can leak
               chemicals that destroy electronic circuits.

5.  Replace the cover.

When the batteries are low, the scanner beeps every 15 seconds.  When
this happens, replace all four non-rechargeable batteries or recharge all
four rechargeable nickel-cadmium batteries (see "Charging Nickel-Cadmium
Batteries").

Important Information about the External Power Jacks

The POWER jack lets you connect an external AC or DC adapter to operate
the scanner.  You can use the POWER jack when you install either
chargeable or non-rechargeable batteries in the scanner.

The CHARGE jack lets you connect an external AC or DC adapter to operate
the scanner and recharge nickel-cadmium batteries while they are in the
scanner.

CAUTION:  Never connect an adapter to the scanner's CHARGE jack if you
          install non-rechargeable batteries in the scanner!  If you try to
          recharge non-rechargeable batteries, they might leak and damage
          the scanner or the surface underneath, or they could get very hot
          and might explode.

Charging Nickel-Cadmium Batteries

The scanner has a built-in circuit that lets you recharge the nickel-
cadmium batteries while they are in the scanner.

To recharge the batteries, connect an AC or DC adapter into the CHARGE
jack (see "Using Standard AC Power" or "Using Vehicle Battery Power").

WARNING:  Never connect either adapter to the scanner's CHARGE jack if you
          install non-rechargeable batteries in the scanner!  If you try to
          recharge non-rechargeable batteries, they could leak or get very
          hot and might explode.

CHARGING TIPS: The first time you use nickel-cadmium batteries, charge them
               at least 24 hours to bring them to a full charge. Subsequent
               chargings take about 10 to 18 hours.  Charging takes longer
               if you operate the scanner while charging the batteries.

               Nickel-cadmium batteries deliver more power and stay charged
               longer between chargings if you occasionally let them fully
               discharge before fully charging them.  To let the batteries
               fully discharge, simply use the scanner until the scanner
               begins beeping every 15 seconds.

               To prevent permanent nickel-cadmium battery power loss,
               never charge your batteries at temperatures above about
               80 degrees F.

IMPORTANT:  This scanner 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.

Using Standard AC Power

You can power your scanner from a standard AC outlet using an optional AC
adapter (such as Cat. No. 273-1652).

WARNING:  Do not use an AC adapter's polarized plug with an extension cord,
          receptacle, or other outlet unless the blades can be fully
          inserted to prevent blade exposure.

CAUTIONS:  The recommended AC adapter supplies 12 volts and delivers at
           least 200 milliamps.  Also, its center tip is set to positive
           and its plug properly fits the scanner's POWER and CHARGE jacks.
           Using an adapter that does not meet these specifications could
           damage the scanner or the adapter.

           Be sure you connect the AC adapter to the scanner before you
           connect it to a standard AC outlet.  Then disconnect the adapter
           from the AC outlet before you disconnect it from the scanner.

NOTE:  The scanner receives a 12-volt input at the CHARGE or POWER jack and
       reduces it to the 6 volts required by the scanner.

1.  Connect the adapter's green barrel plug to the adapter's cord and set
    the barrel plug's tip to positive.

2.  Insert the adapter's green barrel plug into your scanner's POWER jack.

    NOTE:  If you install rechargeable nickel-cadmium batteries in the
           scanner, connect the AC adapter to the CHARGE jack instead of
           the POWER jack.  This lets you use the AC adapter to power the
           scanner and recharge the batteries at the same time.

3.  Connect the adapter's power module to a standard AC outlet.


(SP 3/12/96)

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