7451A/7461A/7461P Digital Multimeter Operation Manual
3.2 Installation Environment
3-3
3.2
Installation Environment
This section describes the environment into which this instrument should be installed.
3.2.1
Operating Environment
Install this instrument in an environment in which the following conditions are satisfied.
•
Ambient temperature: 0
C to +50
C (operating temperature)
-25
C to +70
C (storage temperature)
•
Relative humidity:
80 percent or less with no condensation
•
An area free from corrosive gas
•
An area away from direct sunlight
•
A dust-free area
•
An area free from vibrations
•
A low noise area
Although this instrument has been designed to withstand a certain amount of noise from the AC pow-
er line, it should be used in a low noise area. Use a noise cut filter if ambient noise is unavoidable.
Figure 3-1 Operating Environment
NOTE:
Warm-up
After this instrument reaches room temperature, turn on the power and warm up for 60 minutes or more
to perform the high accuracy measurement.
Vibration
Direct sunlight
Corrosive
gas
• Avoid operating in these areas.
Dust
• Use a noise cut filter when noise is unavoidable
on the AC power line.
Line filter
