Pearson 70 Manuale Utente

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Scanner Installation
Installing the Scanner
2-5
Checking the Voltage
Before you plug the OpScan iNSIGHT 70 scanner into the designated wall outlet, 
the following power and grounding requirements must be met and maintained to 
ensure optimum performance of the scanner and its peripherals. To verify that the 
power and grounding requirements have been met, refer to the following topics: 
Power Noise, Grounding, and Site Power Wiring Recommendations.
Power Noise
The OpScan iNSIGHT 70 scanner is designed to operate satisfactorily under 
conditions of reasonable input power noise. Input power noise specifications are 
as follows:
Grounding
Proper system grounding is extremely important to the safe and reliable 
operation of the system. The OpScan iNSIGHT 70 scanner ground must meet two 
requirements:
1.
It must serve as a return path for current in case of a short circuit between the 
power line and the chassis of any system component.
2.
It must serve as the ground reference point for the OpScan iNSIGHT 70 system 
components and data cables.
Table 2-1  Input Power Noise Specifications
Condition
Description
Definitions
Surge or Sag - any sudden positive or negative excursion in the level of 
the input voltage having a duration from 0.005 to 5 seconds.
Transient - any sudden positive or negative change in the level of the 
input voltage having a duration of between 1 nanosecond and 5 
milliseconds.
Limits
No surge or sag shall exceed ± 15% of the normal rated voltage. However, 
the surge or sag shall be considered acceptable provided its amplitude 
does not exceed ± 50% of the normal rated voltage and it returns to the 
steady-state rated level within 3 cycles of input power.
Recommendations Dedicate a feeder line between the main building power panel and the 
system branch circuit power panel serving the OpScan iNSIGHT 70 
system.
If transients, surges, or sags outside of the limits stated above exist with a 
dedicated feeder, do one or both of the following.
• Install a line conditioner to limit transients.
• Use a constant-voltage isolation transformer to control surges or sags.