SAFETY INSTRUCTIONS 
  7 
Safety Guidelines 
 
General Guideline 
 CAUTION 
  Make sure that the voltage input level does not exceed 
DC1000V/AC750V. 
  Make sure the current input level does not exceed 10A.
  Do not place any heavy object on the GDM-8261. 
  Avoid severe impact or rough handling that can lead to 
damaging the GDM-8261. 
  Do not discharge static electricity to the GDM-8261. 
  Use only mating connectors, not bare wires, for the 
terminals. 
  Do not block or obstruct the cooling fan vent opening.
  Do not perform measurement at the source of a 
low-voltage installation or at building installations 
(Note below). 
  Do not disassemble the GDM-8261 unless you are 
qualified as service personnel. 
(Note) EN 61010-1:2001 specifies the measurement categories and 
their requirements as follows. The GDM-8261 falls under category 
I or II. 
  Measurement category IV is for measurement performed at the 
source of low-voltage installation. 
  Measurement category III is for measurement performed in the 
building installation. 
  Measurement category II is for measurement performed on the 
circuits directly connected to the low voltage installation. 
  Measurement category I is for measurements performed on circuits 
not directly connected to Mains. 
Power Supply 
 WARNING 
  AC Input voltage: 100/120/220/240 V AC ±10%, 
45Hz to 66Hz / 360Hz to 440Hz 
  The power supply voltage should not fluctuate more 
than 10%. 
  Connect the protective grounding conductor of the 
AC power cord to an earth ground, to avoid electrical 
shock. 
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