C O M P O S I T E I F
R F
O U T P U T
I F
L O O P
V I D E O
I N P U T
A U D I O
I N P U T
IN OUT
VISUAL:45.75 MHz
AURAL:41.25 MHz
FUSE
4/10 A , 250V
SLO - BLO
FUSE
115VAC , 60 Hz
25WATTS
- RISK
OF FIRE - REPLACE
FUSE AS MARKED
AFTER DISCONNECTING
UNIT FROM AC LINE.
- RISQUE D'INCENDIE -
REMPLACEZ FUSIBLE DU
TYPE INDIQUE APRES
DEBRANCHER DU
SECTEUR.
CAUTION:
ATTENTION:
MADE INTHE U.S.A.
RBY
SERIAL #
Rear Panel Connections 7
R1
R1 - RF OUTPUT
This is the modulator output.
R2 - COMPOSITE IF IN Connector
This is the composite IF input to the synthesizer circuits.
The composite IF has both the aural and visual IF
combined. This connection is normally cabled directly to
the “COMPOSITE IF OUT” connector (see item R3). This
external IF loop allows the use of accessories such as
scramblers or alternate video sources. Note that acces-
sory equipment must also have the visual carrier at
45.75 MHz and the aural carrier at 41.25 MHz. Both input
carriers must be at their nominally specified levels.
R3 - COMPOSITE IF OUT Connector
This is the composite IF output from the IF circuits. The
composite IF provides a vestigial sideband filtered visual
carrier at 45.75 MHz combined with a level controlled
(15 dBc typical) aural carrier at 41.25 MHz. This
connection is normally cabled directly to the
“COMPOSITE IF IN” connector (see item R2).
R4 - AUDIO INPUT Connector
This is an unbalanced audio input to the IF circuits. This
“RCA” (phono) connector input accepts baseband through
15 kHz audio at a nominal level of 250 mV RMS
(approximately -10 dBu).
R5 - VIDEO INPUT Connector
This is the baseband input to the IF circuits. This input
accepts baseband through 4.2 MHz video at levels from
0.7 Vp-p to 1.5 Vp-p.
R6 - FUSE
Always replace this fuse with one of the same type and
rating: 4/10 Amp, 250 V SLO-BLO®, 5 x 20 mm type.
F7 - LINE CORD
This is a three-wire power cable. When the cable is
connected to a properly wired AC power line outlet, this
cable grounds the instrument cabinet. Connect to a
nominal 115 VAC ±10%, 60 Hz source. Do not defeat the
safety purpose of the attached line cord plug.
R2 R3 R5R4 R6
R7
Figure 2
(29 pages)
(19 pages)
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