Teledyne LeCroy DA1855A - Manual (Page 44)

DA1855A Differential Amplifier
38 922258-00 Rev A
Care and Maintenance
Cleaning
Clean only the exterior of the amplifier using a soft cloth moistened with water or isopropyl alcohol.
Using abrasive agents, strong detergents or other solvents may damage the exterior of the amplifier.
Calibration Interval
The recommended calibration interval is one year. Adjustment should only be performed by
qualified personnel. A Performance Verification procedure is included in this manual.
Service Strategy
Defective amplifiers must be returned to a LeCroy service facility for diagnosis and exchange. A
defective amplifier under warranty will be replaced with a factory refurbished one. An amplifier that
is not under warranty can be exchanged for a factory refurbished unit. A modest fee is charged for
this service. A defective amplifier must be returned in order to receive credit for the amplifier core.
Calibration adjustments require the use of specialized signal sources which are not commercially
available. Amplifiers which do not pass the performance verification must be returned to the factory
for service.
Troubleshooting
If the amplifier is not operating properly the problem may be the way in which it is used. Before
assuming the amplifier is defective, perform the Functional Test as described in the Performance
Verification procedure.
Returns
See Returning a Product on page 85 for instructions on returning an amplifier for repair if you
determine it is malfunctioning after performing the Functional Test procedure.