General Instructions; Precautions And Safety Measurements; Before Use; During Use - Metrix OX 520B Manual De Funcionamiento

Chapter II
1.

GENERAL INSTRUCTIONS

You have just purchased a 20 MHz oscilloscope; we congratulate you on your choice of this
high quality product.
This apparatus complies with IEC safety standard 61010-1 1993, +A2 1995 (BS 4743 - VDE
411), single insulation, dealing with electronic measurement instruments. Please read these
instructions carefully and respect the usage precautions, in order to obtain the best use from it.
Failure to respect warnings and/or usage instructions may damage the apparatus and / or its
components and may be dangerous to the user.
1.1. Safety precautions

1.1.1. Before use

- This instrument was designed for use indoors in an environment with a degree of
pollution 2 at an elevation of less than 2000 m, a temperature between 0°C and 40°C,
and a relative humidity of 80 % up to 31°C.
- It can be used for measurements on 300 V category II installation.
- Definition of installation categories (see publication IEC 664-1):
CAT I :
CAT II :
CAT III :
CAT IV :
- Check that your electricity distribution network is within the range 94 to 264 V.
- Earth all metallic parts that are accessible to touch (including the working table).
- The three-phase network power supply cable (phase, neutral and earth) delivered with
the apparatus is conform with IEC standard 61010-1 1993, +A2 1995. Check that it is in
perfect working condition before use.
- Plug the cable into a socket fitted with an earth connection.

1.1.2. During use

- For your own safety, only use the cables, measurement probes and appropriate
accessories delivered with the apparatus or approved by the manufacturer as optional
accessories.
- Select vertical sensitivity and timebase ranges adapted to the measurement or use the
AUTOSET.
- Never touch an unused terminal when the apparatus is connected to measurement
circuits.
- Carefully read all notes preceded by the
20 MHz oscilloscope
CAT I circuits are protected by devices limiting transient overvoltages to a
low level.
Example: protected electronic circuits
CAT II circuits are power supply circuits for domestic or digital devices that
may include transient overvoltages with an average value.
Example: power supply for household appliances and portable tools.
CAT III circuits are power supply circuits for power equipment that may
include large transient overvoltages.
Example: power supply for industrial machines or equipment
CAT IV circuits may include very high transient overvoltages.
Example: energy arrivals
symbol.
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