Connect
• In many systems, during power up, the outputs may be in
an unknown state until they are properly initialized. Make
sure the design can tolerate this situation without causing
operator injury or hardware damage.
NOTE
To keep users safe, always read and follow all safety warnings
provided with each of the instruments in your system.
Install the instrument
You can use the 2657A on a bench or in a rack. See the
instructions that came with your rack-mount kit if you are
installing the 2657A in a rack.
Note that the air intakes for the fan are located on the top
cover and side panels of the Model 2657A. The space
around these areas should be free from obstruction to
ensure proper fan operation.
Position the instrument so that it is easy to reach any
disconnecting devices, such as the power cord and the
power switch.
Connect protective earth (safety ground) to the rear panel of
the 2657A.
WARNING
The ground wire must be attached to a known protective
earth (safety ground) before powering on the instrument.
Failure to attach the ground wire to a known protective
earth (safety ground) may result in electric shock.
Wiring the interlock
The 2657A is a high-voltage instrument that can output
hazardous live voltages. It is designed to be used with a test
fixture or in a system in which operators are not exposed to
such hazardous voltages.
The 2657A provides an interlock as a method for ensuring
operator safety. The output of the 2657A can only be turned
on when the interlock line is enabled. If you attempt to turn
on the output when the interlock is disabled, the instrument
generates error code 802, “Output blocked by interlock.”
