BNC 6040 - Manual (Page 16)

16
OPERATING INFORMATION
Module Installation
To install a module, turn the power off, slide the module in and tighten the mount screw knob.
Warm Up Requirements
The instrument should be allowed to warm up for 30 minutes before high precision measurements are
made. Less critical tests can be performed immediately after turn-on. Please refer to the module's
manual to determine if it requires an additional warm up period.
Safety Precautions
The safety warnings and cautions that appear in this manual are listed at the end of the table of
contents. Some modules have high voltage or laser outputs and additional safety precautions should be
taken. See the module manual for details.
Electrical Cables, Attenuators and Oscilloscopes
The electrical signal inputs and outputs have fast rise and fall times containing frequency-components
far in excess of 100 MHz. All signal handling components such as loads, cables, attenuators,
connectors and oscilloscopes should have a response exceeding 100 MHz and preferably 350 MHz.
Cable and load impedance mismatch will cause signal reflections and result in distorted waveforms and
measurement errors. Some sampling oscilloscopes will require attenuators to protect their inputs.
CAUTION: The module must be installed with mainframe power off. A module can be
damaged or have its memory corrupted if inserted or removed from the mainframe with the
power on.
WARNING: To avoid possible electric shock, observe the following-
Do not operate with the cover removed. Exposed ac power is present even with the power
switch off.
Be sure the ground conductor of the ac power cord connects the instrument to a solid earth
ground.