Description of Quality Assurance

TM 11-5895-1012-10

3-10. Description of Quality Assurance

Test Center

The QA test center consists of three bays located in the

Electronic maintenance room. The bays contain test

equipment and panels as shown in figure 3-4. The test

center is connected to red circuits in the TCF through

the RED REIAX 75 ohm INT TRUNK in bay 2. Black

TCF circuits are connected to the QA test center

through the black INT panel in bay 1.3.

3-11. Intermediate Distribution

a. General. There are four IDF's in the TCF area

They are an integral part of the Technical Control Fa-

cility and each equipment signaling input and output

connections are terminated at an IDF. In addition, the

input and output signals of each patch panel and cir-

cuit line are also terminated at an IDF. (Wide hand cir-

cuits are not connected through IDF's).

b. Description. Each IDF consists of a matrix made

up of rows of cross-connect panels. A panel contains

ten jack type patch modules (A through H, and J, and

K). Each module has six multi-colored rows of 26 jacks.

The color of the jack rows at the front of the modules,

from left to right are: red (A), white (B), blue (C), yel-

low (D), black (E), and orange (F). Each of the 156 jacks

is connected to a pin on one of three associated connec-

tors mounted on the rear of the panel. The first 48

jacks on the module are connected to pins 1 through 48

on connector J1. Module jacks 40 through 96 are con-

nected to pine 1 through 48 on connector J2. Module

jacks 97 through 144 are connected to pins 1 through

48 on connector J3. Module jacks 145 through 156 are

also connected to connector J1, J2 and J3. Four jacks

to each connector. The connectors are cabled to patch

3-12. Digital Circuits, General

TCF provides cross-connection. monitoring, testing,

circuit patching access, and timing clock for black and

red digital circuits. A typical black circuit is discussed

in paragraph 3-13. All digital circuits are connected

through a Universal Digital Patch Panel. The patch

panel and its different configurations are discussed in

Figure 3-3. Red vf test bay (typical), front view.

paragraphs 3-14 and 3-15.

3-9