ProbeScope V3.0 for Windows/DOS
(220-0310)               Safety Instructions          Faxback Doc. # 33353

WARNING:  Use extreme caution in the use of this device.  Improper use of
          this device can result in injury or death.  Follow all the
          safeguards suggested in this owner's manual in addition to normal
          safety precautions in dealing with electrical circuits.  Do not
          use this device if you are unfamiliar with electrical circuits
          and testing procedures.

NOT FOR COMMERCIAL OR INDUSTRIAL USE.

This oscilloscope is designed to ensure the safest operation possible.
However, safe operation depends on you, the operator.  Make sure you follow
these simple safety rules:

    Read all of these instructions carefully, and save them for your
    reference.

    Follow all warnings and instructions marked on the ProbeScope.

    When making voltage measurements, never touch the ProbeScope's tip or a
    hot wire in AC wiring circuits.  If you do, you could receive an
    electric shock.

    Never apply the ProbeScope to a source of power greater than 100V DC/AC
    Peak-to-Peak.  Doing so could cause electrical shock or damage to the
    ProbeScope.

    CAUTION:  If you do not know the level of the voltage to measure in
              manual range control, always start at the highest range: 
              100V DC or AC.

    Never try to measure any voltage more than 30 VAC on a DC source bias. 
    Doing so might damage your ProbeScope.

    Always discharge filter capacitors in the circuit under test before you
    attach the ProbeScope.  If the ProbeScope touches an undischarged
    capacitor, it could damage it.  If you touch an undischarged capacitor,
    you could receive an electric shock.

    Always turn off power and disconnect the ProbeScope before you change
    power sources.

    Because many AC-DC sets have a potentially hot chassis, be sure the top
    of your workbench and the floor underneath it are made of nonconductive
    materials.

    Unplug the ProbeScope before cleaning it.  Do not use liquid or aerosol
    cleaners.  Use a damp cloth for cleaning and then wipe it dry
     immediately.

    Do not use the ProbeScope near water (for example, a bathtub, washbowl,
    kitchen sink, laundry tub, wet basement, or swimming pool).

    Do not use unapproved attachments.

    The ProbeScope should be operated from a 9-13V DC power source, such as
    a battery or DC power supply.

    Do not allow anything to rest on the power cord.  Do not locate the
    power supply where people might walk on the cord.

    If your ProbeScope doesn't operate normally, in particular if any
    unusual sounds or smells come from it, immediately unplug it and
    contact your local RadioShack store.

    Do not attempt to service the ProbeScope yourself; opening or removing
    the cover can expose you to dangerous voltage or other hazards.

    Unplug the ProbeScope from the DC power source and refer servicing to
    qualified service personnel under the following conditions:

    If the power cord is damaged or frayed

    If the ProbeScope has been exposed to rain or water

    If the ProbeScope does not operate normally and you are following the
    operating instructions

    If the ProbeScope has been dropped or damaged

    If the ProbeScope exhibits a distinct change in performance

This Radio Shack ProbeScope is fully calibrated and tested.  Under normal
use, no further internal adjustment should be necessary.  Adjust only those
controls covered by the operating instructions.  Improper adjustment of
other controls might result in damage and might require extensive work by a
qualified technician to restore the ProbeScope to normal operation.  If
the ProbeScope should require repair, do not try to repair it yourself.
Take it to your local RadioShack store.


(yo/all-06/13/96)