Do not operate with suspected
failures
If you suspect that there is damage to this product, have it inspected by qualified service personnel.
Disable the product if it is damaged. Do not use the product if it is damaged or operates incorrectly. If in
doubt about safety of the product, turn it off and disconnect the power cord. Clearly mark the product to
prevent its further operation.
Before use, inspect voltage probes, test leads, and accessories for mechanical damage and replace when
damaged. Do not use probes or test leads if they are damaged, if there is exposed metal, or if a wear
indicator shows.
Examine the exterior of the product before you use it. Look for cracks or missing pieces.
Use only specified replacement parts.
Do not operate in wet/damp
conditions
Be aware that condensation may occur if a unit is moved from a cold to a warm environment.
Do not operate in an explosive
atmosphere
Keep product surfaces clean
and dry
Remove the input signals before you clean the product.
Provide proper ventilation
Refer to the installation instructions in the manual for details on installing the product so it has proper
ventilation.
Slots and openings are provided for ventilation and should never be covered or otherwise obstructed. Do
not push objects into any of the openings.
Provide a safe working
environment
Always place the product in a location convenient for viewing the display and indicators.
Avoid improper or prolonged use of keyboards, pointers, and button pads. Improper or prolonged keyboard
or pointer use may result in serious injury.
Be sure your work area meets applicable ergonomic standards. Consult with an ergonomics professional to
avoid stress injuries.
Use care when lifting and carrying the product. This product is provided with a handle or handles for lifting
and carrying.
Use only the Tektronix rackmount hardware specified for this product.
Probes and test leads
Before connecting probes or test leads, connect the power cord from the power connector to a properly grounded power outlet.
Keep fingers behind the protective barrier, protective finger guard, or tactile indicator on the probes.
Remove all probes, test leads and accessories that are not in use.
Use only correct Measurement Category (CAT), voltage, temperature, altitude, and amperage rated probes, test leads, and adapters for
any measurement.
Beware of high voltages
Understand the voltage ratings for the probe you are using and do not exceed those ratings. Two ratings are
important to know and understand:
• The maximum measurement voltage from the probe tip to the probe reference lead
• The maximum floating voltage from the probe reference lead to earth ground
These two voltage ratings depend on the probe and your application. Refer to the Specifications section of
the manual for more information.
Warning: To prevent electrical shock, do not exceed the maximum measurement or maximum
floating voltage for the oscilloscope input BNC connector, probe tip, or probe reference lead.
Important safety information
3 Series MDO Mixed Domain Oscilloscope Service Manual
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