Lesson 2/Learning Event 2
c. Adjust. The circuit conditioner must be able to adjust corrective
items so as to meet requirements of circuits and to use test items in
verifying that requirements have been met. Corrective items on VF circuits
include equalizers, pads, amplifiers, and terminating resistors. Corrective
items on DC circuits include regenerative repeaters, relays, and pulse form
restorers.
Learning Event 2: TOOLS FOR TEE CIRCUIT CONDITIONER.
To provide useful results in circuit conditioning at least three basic
conditions must be present, as shown in figure 2.
Test sets, corrective
devices, and DCA specifications must all be present at the bay or patching
panel where circuit conditioning procedures will be applied.
Figure 2.
Basic conditions for circuit conditioning, block diagram.
a. Test equipment and information.
Needed test equipment items will
normally be found at technical control centers and communication nodal
points. Because of their large size and weight, most test items are rack
mounted. Since connections with circuits are normally made through patching
panels, the test sets are usually provided with jack terminations.
Jacks
and patchcords simplify the process of connecting the test sets to circuits.
An important component of each test equipment item is the instruction
manual; no test set is complete without it. More important, however, is the
knowledge concerning the use of the test set.
29
Previous Page
