User Manual

Introduction2

2 Introduction

2.1

Safety symbols

The following symbols appear on the top cover of the PicoScope 4000 Series PC

Oscilloscope.

Symbol 1: Warning triangle

This symbol indicates that a safety hazard exists on the indicated

connections if correct precautions are not taken. Read all safety

documentation associated with the product before using it.

Symbol 2: Equipotential

This symbol indicates that the outer shells of the indicated BNC

connectors are all at the same potential (shorted together). You

must therefore take necessary precautions to avoid applying a

potential across the return connections of the indicated BNC

terminals. Such a potential could cause a large current to flow,

resulting in damage to the product or connected equipment, or both.

2.2

Safety warning

We strongly recommend that you read the general safety information below before

using your oscilloscope for the first time. Safety protection built in to equipment may

cease to function if the equipment is used incorrectly. This could cause damage to

your computer, or lead to injury to yourself and others.

Maximum input range. Do not exceed the "Overvoltage protection" range stated in

the Specifications table for your model of oscilloscope. Contact with voltages outside

the protection range may cause permanent damage to the unit.

Mains voltages. Pico Technology products are not designed for use with mains (line)

voltages. To measure mains, use a differential isolating probe specifically rated for

mains use.

Magnetic Fields. PicoScope oscilloscopes can be adversely affected by strong

magnetic fields. It is advised that strong magnets be kept away from the oscilloscope

unit.

Safety grounding. PicoScope 4000 Series PC Oscilloscopes connect directly to the

ground of a computer through the USB cable provided to minimise interference.

As with most oscilloscopes, avoid connecting the ground input to any potential other

than ground. If in doubt, use a meter to check that there is no significant AC or DC

voltage between the ground input of the oscilloscope and the point to which you

intend to connect it. Failure to check may cause damage to your computer or injury to

yourself and others.

The product does not have a protective safety ground.