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R1 - IF OUTPUT Connector
This is the 44 MHz IF output. The level is
+30 dBmV.
R2 - DC INPUT Connector
This 3-pin connector (Male) accepts the
appropriate mating DC power cable. Observe
proper orientation and wiring.
R3 - RF IN Connector
This is the downconverter RF input from an
antenna or CATV feed.
REAR PANEL CONNECTIONS
R1
IF OUT
POWER
+12 V
+12 V
R2
GND
GND
+5 V
+5 V
R3
RF IN
Figure 2
3
4
INSTALLATION
CONNECTIONS AND CONTROLS
All connections to and from each upconverter
are made through the rear panel.
DESCRIPTION
Figure 3 shows a typical installation utilizing the
Drake DRMM12 rack with 4 DDC864A
downconverters, and 4 DUC upconverters.
A PS8 power supply module is used to power all
units.
POWER
SUPPLY
DC OUTPUTS X 8
12V GND 5V
100-240 V ~
50/60 Hz
85 WATTS
DC OUTPUT RATING.
TOTAL OF ALL OUTPUTS: +5V:6A MAX.
+12V:2.5A MAX.
AC POWER
CONNECTOR
RACK MOUNTING
Adequate ventilation is very important in
multichannel installations. Units should be
spaced apart vertically by at least 1.75"
wherever possible, and some air movement is
mandatory in enclosed rack cabinets.
Excessive heat will shorten component life and
performance will be degraded without
proper cooling.
DDC864A
DIGITAL
DOWNCONVERTERS
IF IN
IF OUT
IF IN
IF OUT
IF IN
IF OUT
POWER
POWER
POWER
POWER
POWER
POWER
+12 V
+12 V
+12 V
+12 V
+12 V
+12 V
GND
GND
GND
GND
GND
GND
GND
+5 V
+5 V
+5 V
+5 V
+5 V
+5 V
RF OUT
RF IN
RF OUT
RF IN
RF OUT
RF IN
DUC864
UPCONVERTERS
Figure 3
IF IN
IF OUT
POWER
POWER
+12 V
+12 V
GND
+5 V
+5 V
RF OUT
RF IN