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TO 31R2-2TRC199-1
5-4
All external power sources are accessed through a common connector. A unique cable is provided to accommodate each
source. Two toggle switches operate as described in Table 4-2.
The power supply also incorporates an RF peak detector which produces a DC voltage that is proportional to the
transmitted RF power. The detector is used with the repeater unit as part of the RF output power automatic level control
(ALC).
Section II. FUNCTIONAL OPERATION OF ELECTRONIC CIRCUITS
5-3
REPEATER CONTROL CIRCUIT CARD ASSEMBLY (CCA) (A3).
(See Figure 5-2.) As shown in Figure 5-2, the repeater control CCA (A3) consists of the following major functions:
a.
Input limiter
b.
Clear path
c.
Data path
d.
12 kbps detector
e.
16 kbps detector
f.
Clocks and controls
5-4
15 WATT POWER AMPLIFIER ASSEMBLY (A6).
(See Figure 5-3.) As shown in Figure 5-3, the 15 watt power amplifier assembly (A6) consists of the following major
functions:
a.
RF signal path and AMPKEY control
b.
Automatic level control
c.
Manual level control
d.
RF detector
e.
Thermal protection
f.
Current limiting
g.
EEPROM
h.
Voltage regulators
Section III. FUNCTIONAL OPERATION OF MECHANICAL ASSEMBLIES
Not Applicable.
Содержание AN/TRC-199
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