DRAKE VM2862 Manuel d'instruction - Page 5
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®
RF OUTPUT
MADE IN THE U.S.A. BY
SERIAL #
R1
R1 - RF OUTPUT
This is the modulator output, 54 to 864 MHz.
R2 - EAS IN Connector
Apply a 44 MHz (45.75 MHz video carrier) signal at
30 dBmV to this input from an EAS IF modulator. Any level
above +20 dBmV will activate the auto switching circuitry.
R3 - SAP Level *
Adjusts the modulation level of the SAP subcarrier.
Advance level until indicator R5 just illuminates.
R4 - SAP AUDIO IN *
Apply the audio program for the SAP audio channel to this
input.
R5 - SAP OVERMODULATION *
Indicates overmodulation of the SAP audio channel. Adjust
audio with SAP level control, R3.
R6 - AUDIO IN, L/R
These are unbalanced audio inputs to the IF circuits.
These "RCA" (phono) connector inputs accept baseband
through 15 kHz audio at a nominal level of 250 mV RMS
(approximately -10 dBu).
* SAP option must be installed in the VM2862.
The SAP option may be field installed, by a qualified
technician, into a VM2862. For purchase information, call
Drake Customer Service at 1 (937) 746-6990.
Rear Panel Controls and Connections
R3 R4
SAP LEVEL
SAP AUDIO IN
EAS IN
SAP
OVERMODULATION
R2
R5
Figure 2 - REAR PANEL
R8
AUDIO IN
VIDEO IN
L
R
R6
R7
R7 - VIDEO INPUT ("RCA" type or "F" type)
These are used as the baseband input to the IF circuits.
Use ONE of these inputs (either the "RCA" or "F" type)
which accepts baseband through 4.2 MHz video at levels
from 0.7 Vp-p to 1.5 Vp-p.
R8 - Fan Vents
To ensure proper cooling of the unit, do not block these
vents for the cooling fan.
R9 - FUSE
Always replace this fuse with one of the same type and
rating: .5 Amp, 250 V SLO-BLO®, 5 x 20 mm type.
R10 - 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 center ground prong on the attached
line cord plug.
5
R10
CAUTION:-
FUSE
RISK OF
115 VAC, 60 Hz
FIRE-REPLACE FUSE AS
.5 A / 250 V
27 WATT
MARKED AFTER
SLO-BLO
DISCONNECTING
UNIT FROM AC LINE.
ATTENTION:
-RISQUE D'INCENIDE-
REMPLACEZ FUSIBLE DU
TYPE INDIQUÉ APRÉS
DEBRANCHER DU SECTEUR.
R9