User manual

PicoScope 4000 Series User's Guide2

2 Introduction

2.1

Using this guide

You will sometimes see a symbol like this: This is the cross-reference symbol, and

it indicates the number of a page on which you can find more information about a

topic.

The abbreviation MS/s is used in this guide to mean megasamples per second.

2.2

Safety symbols

The following symbols appear on the front panel 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.

2.3

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

PicoScope 4000 Series PC Oscilloscopes are designed to measure voltages in the

range ±100 V. All inputs are protected to ±200 V. 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 voltages. To measure

mains, use a differential isolating probe specifically rated for mains use.

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.