Section I
Paragraphs 1-1, to 1-8
SECTION I
DESCRIPTION AND LEADING PARTICULARS
1-1. INTRODUCTION.
(See figures 1-1 and 1-2.)
1-2. This handbook contains the theory of operation
and maintenance of Signal Generator SC-13/ARN (fig-
Case 1 contains all equipment necessary for opera-
tion within 10 feet of the receiver under test and the
1-3. PURPOSE.
power source. Case 2 contains additional equipment
necessary for operation within 85 feet of the receiver
under test and the power source. Table I lists all
ment for ramp testing of aircraft navigation, local-
e q u i p m e n t supplied as part of Signal Generator
izer and glide slope receivers.
SG-13/ARN.
NAME
GOVERNMENT TYPE DESIGNATION
QUANTITY
CASE 1
1
Signal Generator
SG-13/ARN
1
AT-170/ARN
1
Power Cable Assembly (10 ft)
CX-1095/U
1
CG-409A/U
R-F Transmission Line (10 ft)
1
Adapter
UG-201/U
1
Adapter
UG-29/U,
1
Adapter (impedance matching)
UG-529/U
2
Fuse
3AG
1
Bristol Wrench #10
1
Bristol Wrench #8
1
Bristol Wrench #6
1
Bristol Wrench #4
1
Phillips Screwdriver #2
1
Phillips Screwdriver #1
CASE 2
1
Accessory Case
CY-868/U
1
Power Cable Assembly
(25 ft)
CX-1506/U
1
Power Cable Assembly
(50 ft)
CX-1506/U
1
Power Adapter
CX-2489/U
1
R-F Transmission Line
(25 ft)
CG-409A/U
1
R-F Transmission Line
(50 ft)
CG-409A/U
1
Adapter
UG-29/U
4
Adapter
UG-201/U
intervals in the range of 108.0 to 135.9 megacycles
1-7. DESCRIPTION.
and a shielded univerter chassis (1, figure 1-3) for
1-8. SIGNAL GENERATOR. The signal generator
producing r-f signals spaced at 100 kc intervals in
the range of 329.3 to 335.0 megacycles for glide slope
a waterproof snap-on cover (figure 1-2) that contains
testing. The r-f chassis also contains a piston type
all accessories necessary for operation within 10 feet
attenuator allowing the r-f output to be varied from 4
to 200,000 microvolt.
of the equipment under test. The signal generator is
divided into two sections that have a common front
panel.
b. The audio section (3, figure 1-3) contains all the
circuits necessary to produce the required audio sig-
a. The r-f section contains all the circuits neces-
nals for modulating the r-f carrier and the power
sary to produce the required r-f signals. It com-
supply for the signal generator. An audio selector
prises a shielded r-f chassis, (2, figure 1-3) for pro-
switch is used to select the type of modulating signal
ducing r-f signals in 280 channels spaced at 100 kc
desired.
