HP 83487A User Manual page 4

C A U T I O N
Measurement Accuracy
Measurement Accuracy
To ensure that you obtain the specified accuracy, you must perform a plug-in
module vertical calibration. The calibration must also be performed when you
move a plug-in module from one slot to another, or from one mainframe to
another. Refer to Chapter 3, "Calibration Overview"
forming a plug-in module vertical calibration.
The HP 83487A optical/electrical plug-in module input circuitry can be
damaged when the total input power levels exceed +10 dBm (10 mW) on the
optical channel or ±2 V + peak ac (+16 dBm) on the electrical channel. To
prevent input damage, this specified level must not be exceeded.
Measurement accuracy—it's up to you!
Fiber-optic connectors are easily damaged when connected to dirty or damaged cables
and accessories. The HP 83487A optical/electrical plug-in module's front-panel INPUT
connector is no exception. When you use improper cleaning and handling techniques,
you risk expensive instrument repairs, damaged cables, and compromised measure-
ments.
Before you connect any fiber-optic cable to the HP 83487A optical/electrical plug-in
module, refer to "Cleaning Connections for Accurate Measurements" on page
iv
for information on per-
5-14.