Safety Considerations Installation and Maintenance
Agilent 8163A Lightwave Multimeter, Agilent 8164A Lightwave Measurement System, & Agilent 8166A Lightwave 
Multichannel System, Fourth Edition
201
Safety Considerations
The Agilent 8163A Lightwave Multimeter System, Agilent 8164A Lightwave 
Measurement System, and the Agilent 8166A Lightwave Multichannel System 
are Safety Class 1 instruments (that is, instruments with a metal chassis directly 
connected to earth via the power supply cable). The shown symbol is used to 
show a protective earth terminal in the instrument.
Before operation, review the instrument and manual for safety markings and 
instructions. You must follow these to ensure safe operation and to maintain the 
instrument in safe condition.
Some Agilent 8164A Lightwave Measurement System and Agilent 8166A 
Lightwave Multichannel System circuits are powered whenever the instrument is 
connected to the AC power source. To disconnect from the line power, disconnect 
the power cord either at the rear power inlet, or at the AC line power source 
(receptacle). One of these must always be accessible. If the instrument is in a 
cabinet, it must be disconnected from the line power by the system’s line power 
switch.
Initial Inspection
Inspect the shipping container for damage. If there is damage to the container or 
cushioning, keep them until you have checked the contents of the shipment for 
completeness and verified the instrument both mechanically and electrically.
The Function Tests give a procedure for checking the operation of the instrument. 
If the contents are incomplete, mechanical damage or defect is apparent, or if an 
instrument does not pass the operator’s checks, notify the nearest Agilent 
Technologies Sales/Service Office.
WARNING To avoid hazardous electrical shock, do not perform electrical tests when there 
are signs of shipping damage to any portion of the outer enclosure (covers, 
panels, and so on).