DRAKE DRMM4 Руководство по эксплуатации - Страница 6
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Rear Panel Connections
R1
MADE IN THE U.S.A. BY
®
RF
OUTPUT
SERIAL #
R1 – RF OUTPUT Connector
This is the converted channel output.
R2 – COMPOSITE IF IN Connector
This is the composite IF input to the output channel
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 accessory
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 (plus or minus
any input signal offset) combined with a level
controlled aural carrier at 41.25 MHz (plus or minus
any input signal offset). This connection is normally
cabled directly to the "COMPOSITE IF IN" connector
(see Item R2).
R2
R3
COMPOSITE IF
IN
OUT
IF
LOOP
Figure 2
R4
CAUTION:
OF FIRE - REPLACE
RF
FUSE AS MARKED
INPUT
AFTER DISCONNECTING
UNIT FROM AC LINE.
ATTENTION:
- RISQUE D'INCENDIE -
REMPLACEZ FUSIBLE DU
TYPE INDIQUE APRES
DEBRANCHER DU SECTEUR.
R4 – RF INPUT Connector
This is the input to the channel processor circuits for
all signals with video carrier frequencies in the range
of 54 through 806 MHz.
R5 – FUSE Holder
Always replace this fuse with one of the same type
and rating:
1/2 Amp, 250 V, SLO-BLO, 5 x 20 mm type.
R6 – 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.
R5
R6
- RISK
FUSE
1 / 2 A, 250 V
115 VAC, 60Hz
SLO - BLO
30 WATTS