Figure 2-24. Typical series and panel interbay trunking systems

TM 11-5895-1012-10

Figure 2-24. Typical series and panel interbay trunking systems.

and dc Technical Control Facility areas to provide an

tions. When a trunk is put into use at one bay, the

efficient means for performing these operations. It is

corresponding in-use lamp will illuminate at all the

not possible in a general type technical manual, such

interbay panels where the trunk appears to indicate

as this, to list every specific piece of test equipment to

the trunk is in use.

nomenclature of manufacturers name that could be

2-38. Voice Frequency and DC Test Equip-

found on every TCF in the world. However, instead a

ment

listing by genre is provided. This listing will help you

A major responsibility of Technical Control Facility

identify the specific items installed at any TCF and

personnel is that of monitoring and testing circuits

briefly describe its function.

through the TCF to determine circuit quality and to

a. Speaker Panels. Speaker panels are usually

determine operating conditions. Additionally, they are

mounted in the bottom of the voice frequency test

responsible for the rapid identification and isolation of

bays. These panels are used for aural monitoring of vf

faulty equipment in order to achieve optimum operat-

circuits carrying voice signals for the purpose of deter-

ing effectiveness. Accordingly, assorted test and moni-

mining continuity and/or the quality of the speech

tor equipment is located through the voice frequency

traffic. The panel usually includes two amplifier