322 8163A/B, 8164A/B, 8166A/B User’s Guide
11 Installation and Maintenance
Altitude
The maximum operating altitude of the 8163A/B Lightwave Multimeter
System, the 8164A/B Lightwave Measurement System, and the 8166A/B
Lightwave Multichannel System is
2000 m.
Pollution Protection
The 8163A/B Lightwave Multimeter System, 8164A/B Lightwave
Measurement System, and the 8166A/B Lightwave Multichannel System
are designed for pollution degree 2.
Storage and Shipment
The instrument can be stored or shipped at temperatures between -40×C
and +70×C. The instrument should be protected from temperature
extremes that may cause condensation within it.
Instrument Cooling
The 8163A/B Lightwave Multimeter System and the 8164A/B Lightwave
Measurement System have a cooling fan mounted internally.
The 8166A/B Lightwave Multichannel System has cooling fans mounted
internally.
Mount or position your instrument upright and horizontally, as shown in
Figure 198 on page -323, Figure 199 on page -323, or Figure 200 on
page -324so that air can circulate through it freely.
Operating Position
When operating the 8163A/B, 8164A/B, or 8166A/B choose a location
that provides at least 75 mm (3 inches) of clearance at the rear, and at
least 25 mm (1 inch) of clearance at each side. Failure to provide adequate
air clearance may result in excessive internal temperature, reducing
instrument reliability. The instrument should not be operated when
mounted on its rear or side panels.
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