Micsig ATO1000 Series, User Manual

Page: 10 / 219

Chapter 1. Safety Precautions
7
Measurement Category
ATO series oscilloscopes can be measured under measurement category I.
Measurement Category Definition
Measurement category I is for measurement on a circuit that is not directly connected to the mains power supply. For
example, there is no circuit drawn from the main power source, or a circuit that has been drawn from the mains but has
been specially protected (internal). In the latter case, the instantaneous stress will change; therefore, the user should
understand the instantaneous endurance of the device.
Warning:
IEC measurement category. Under IEC category I installation conditions, the input terminal can be connected to a
circuit terminal with a maximum line voltage of 300Vrms. To avoid the risk of electric shock, please do not connect
the input terminal to a circuit whose line voltage exceeds 300Vrms. The transient overvoltage exists in a circuit
isolated from the main power supply. TO1000 series digital oscilloscopes are designed to safely withstand
occasional transient overvoltages up to 1000Vpk. Do not use this equipment to measure in a circuit where the
instantaneous overvoltage exceeds this value.
1.2 Safety Terms and Symbols
Terms in the manual
These terms may appear in this manual:
Warning
. Warning statements indicate conditions or practices that could result in injury or loss of life.
Caution.
Caution statements indicate conditions or practices that could result in damage to this product or
other property.
Terms on the product
These terms may appear on the product:
Danger indicates an injury hazard immediately accessible as you read the marking.
Warning indicates an injury hazard not immediately accessible as you read the marking.
Caution indicates a hazard to this product or other properties.
Symbols on the product
The following symbols may appear on the product:
Hazardous Voltage Caution Refer to Manual Protective Ground Terminal