d. Built-in test connector for connection of COU.
e. Used
with
AN/TSQ-111,
AN/TCC-42,
AN/TRC-170,
AN/TRC-173,
and
AN/TRC-174.
f.
Will amplify the signal from 30 millivolts peak-to-peak to 2
volts peak-to-peak.
g. Power requirement is 1.5 watts, 40 milliamps constant
current
supplied from the MD-1023(P)/TTC at both ends of the cable link.
Figure 2-7.
Pulse form restorer TD-1218/G.
46. Another item used in the cable line is the pulse form restorer TD-
1219( )/G high speed pulse restorer (HSPR). It too, is a member of the DGM
family. It is used in repeater cable systems to regenerate the cable signal
each .4 kilometer (1/4 mile) in CX-11230A/G systems. The HSPR is a two-way
unit which detects and regenerates conditioned diphase signals at 19,200
kb/s.
It carries orderwire circuits and operates in conjunction with the
COU. See Figure 2-8.
47.
Some characteristics of this unit are-
a. Remotely powered by the
high speed cable drive modem MD-1024/G
located at each terminal end.
b. Restores and retimes the signal.
c. Drives the signal over 1 mile; used in 1/4-mile maximum distances.
SS0444
2-12
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