1.3 Precautions
1.3.1 Line voltage selection
This instrument must be operated with the correct Line Voltage Selector Switch setting and the correct line
fuse for the voltage selected to prevent damage. The instrument operates from either a 98 to 125 volts or a
198 to 250 volt line voltage source. Before line voltage is applied to the instrument, make sure the Line
Voltage Selector is set correctly.
To change the line voltage selection:
1. Make sure the instrument is disconnected from the power source.
2. Switch the line voltage selector to the desired position.
3. Pull out the Line Fuse Holder containing the fuse for overload protection. Replace the fuse in the
holder with the correct fuse from table 1-1 and plug it in.
Table 1-1: Line voltage Selection and Fuse ratings
Fuse Ratings (250 V)
Line voltage Arrow Mark Position UL198 G IEC127
98 to 125 volts 115 F 1,25 A F1.25 A
198 to 250 volts 230 F0.63 A F0.63 A
1.3.2 Installation and handling precautions
When placing the PeakTech 2020 GN or PeakTech 2030 KT in Service at your workplace, observe the
following precautions for best instrument performance and longest service life.
• Avoid placing this instrument in an extremely hot or cold place. Specifically, don't leave this instrument in
a close car, exposed to sunlight in midsummer, or next to a space heater.
• Don't use this instrument immediately after bringing it in from the cold. Allow time for it to warm to room
temperature. Similiary don't move it from a warm place to a very cold place, as condensation might
impair its operation.
• Do not expose the instrument to wet or dusty environments.
• Do not place liquid-filled containers (such as coffee cups) on top of this instrument. A spill could seriously
damage the instrument.
• Do not use this instrument where it is subject to severe vibration, or strong blows.
• Do not place heavy objects on the case, or otherwise block the ventilation holes.
• Do not use this oscilloscope in strong magnetic fields, such as near motors.
• Do not insert wires, tools, etc. through the ventilation holes.
• Do not leave a hot soldering iron near the instrument.
• Do not place this scope face down on the ground, or damage to the knobs may result.
• Do not use this instrument upright while BNC cables are attached to the rear-panel connectors. This will
damage the cable.
• Do not apply voltages in excess of the maximum ratings to the input connectors or probes.
2. Operating instructions
This section contains the information needed to operate the PeakTech 2020 GN or PeakTech 2030 KT and
utilize it in a variety of basic and advanced measurement procedures. Included are the identification and
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