Additional safety notices – Agilent Technologies 34939A User Manual
Page 3

Additional Safety Notices
The following general safety precautions 
must be observed during all phases of oper-
ation of this instrument. Failure to comply 
with these precautions or with specific 
warnings or instructions elsewhere in this 
manual violates safety standards of design, 
manufacture, and intended use of the 
instrument. Agilent Technologies assumes 
no liability of the customer’s failure to com-
ply with the requirements.
General
Do not use this products in any manner not 
specified by the manufacturer. The protec-
tive features of this product may be 
impaired if it is used in a manner not speci-
fied in the operation instructions. 
Before Applying Power
Verify that all safety precautions are taken. 
Make all connections to the unit before 
applying power.
Ground the Instrument
This product is provided with protective 
earth terminals. To minimize shock hazard, 
the instrument must be connected to the 
ac power mains through a grounded power 
cable, with the ground wire firmly con-
nected to an electrical ground (safety 
ground) at the power outlet. Any interrup-
tion of the protective (grounding) conduc-
tor or disconnection of the protective earth 
terminal will cause a potential shock haz-
ard that could result in personal injury. 
Do Not Operate in an Explosive 
Atmosphere
Do not operate the instrument in the pres-
ence of flammable gases or fumes.
Do Not Remove the Instrument 
Cover
Only qualified, service-trained personal 
who are aware of the hazards involved 
should remove instrument covers. Always 
disconnect the power cable and any exter-
nal circuits before removing the instrument 
cover. 
Do Not Modify the Instrument
Do not install substitute parts or perform 
any unauthorized modification to the prod-
uct. Return the product to an Agilent Sales 
and Service Office for service and repair to 
ensure that safety features are maintained. 
In Case of Damage
Instruments that appear damaged or defec-
tive should be made inoperative and 
secured against unintended operation until 
they can be repaired by qualified service 
personnel. 
Safety Symbols
Waste Electrical and Electronic 
Equipment (WEEE) Directive 
2002/96/EC
This product complies with the WEEE 
Directive (2002/96/EC) marking require-
ment. The affixed product label (see above) 
indicates that you must not discard this 
electrical/electronic product in domestic 
household waste.
Product Category: With reference to the 
equipment types in the WEEE directive 
Annex 1, this product is classified as a 
“Monitoring and Control instrumentation” 
product. 
To return unwanted products, contact
your local Agilent office, or go to
www.agilent.com/environment/product
for more information.
Technical Support
If you have questions about your shipment, 
or if you need information about warranty, 
service, or technical support, contact 
Agilent Technologies:
In the United States: (800) 829-4444
In Europe: 31 20 547 2111
In Japan: 0120-421-345
Or go to
for information on contacting Agilent in 
your country of specific location. You can 
also contact your Agilent Technologies 
Representative.
Alternating current
Frame or chassis 
terminal
Standby supply. Unit is 
not completely 
disconnected from ac 
mains when switch is off 
Caution, risk of electric 
shock
Caution, refer to 
accompanying description
Agilent 34937A-34939A General Purpose
Switch
Modules
User’s
Guide
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