One function of terminating resistors that resemble patching plugs is
to reduce noise buildup on lines during tests. These plugs are used to
b. dissipate the noise power developed on lines.
d. terminate lines in their characteristic impedance.
Communication must be maintained between circuit conditioners working
at opposite ends of a system to assure coordination of their activities.
The normal communication channel between them is through
a. ground return.
b. the order wire circuit.
c. the line being conditioned.
d. a circuit independent of the order wire.
A circuit conditioner should listen on the line with a high-impedance
headset before starting conditioning procedures.
The purpose of this preliminary check is to determine whether
a. signals have correct levels.
c. the line is open, shorted, or grounded.
d. signals that could interfere with tests might be present on the
While the circuit conditioner tests DC circuits, he must use certain
precautions to protect the test equipment.
These precautions include
knowledge of the
a. amount and direction of current flow.
b. signal level and amount of current flow.
c. amount of current flow and signal frequency.
d. signal frequency and direction of current flow.