GENERAL DESCRIPTION
The R. L. Drake DAD860 and DAD860A are high
quality, low noise, frequency agile, digital to analog
decoders designed for receiving digital signals from
off-air or CATV channels. Output of the DAD860 is
baseband NTSC video and stereo audio. The
DAD860A, only, has these NTSC outputs plus an
additional ASI output containing the entire demodu-
lated transport stream for the tuned RF channel (all
programs included).
The NTSC output of a DAD860 or DAD860A can be
connected to VMM series modulators to place the
programming on an off-air or CATV channel, or to any
other device requiring baseband audio and video input.
General Description 5
Parameters for the DAD860 can be set up with the
DAD860 Controller Module or by front panel RS232
connection to a PC running ‘DAD860 Remote
Control Software’.
The one-unit wide module can be rack mounted using
the 12 position RMM12 rack mount, and is powered
by the Drake PSM121 Power Supply. Up to 10 units
plus the DAD860 Controller Module, or 12 units
without the Controller Module can be mounted in the
12 position rack mount. If no controller is required,
the RMM4 chassis and power supply may be used for
up to 4 DAD860s. DAD860As require more current
from the power supply and thus require the above
capacity to be reduced by two.
INSTALLATION AND MOUNTING
Install the decoders in the RMM12 rack mounting
frame. Slide each module into the frame from the
front so that the mounting rails on the top and bottom
of the DAD engage the mounting tracks on the frame.
Similarly, mount the PSM121 Power Supply, again
making sure that its mounting rails line up with the
tracks in the frame. Apply the same mounting
procedure to the DAD860 Controller.
Note that, while the drawings on this page show only
DAD860s installed, various combinations of
DAD860(A)s and VMM600 or VMM860 modulators
could be installed in the same RMM12 or RMM4.
Plug the supplied power cable into the receptacle on
the rear of the PSM121 Power Supply, and attach a
connector to the POWER receptacle on the rear of
each of the DAD860s, VMM modulators, and the
DAD860 Controller if used.
If the DAD860 Controller is used, plug the supplied
cable into the COMM receptacle on its rear panel.
You will note that the other end of this cable termi-
nates in ten three conductor female connectors.
Insert one of these connectors into the LINK recep-
tacle on each of the DAD860s installed in the rack.
While these connectors can be inserted in any
order, it is suggested that cables be connected to
the DAD860s in numerical order from either left to
right or right to left - depending on which side of the
rack the DAD Controller is mounted.
Connect an RF source (off-air or CATV) to the RF IN
connector on each unit and connect the VIDEO
OUT and AUDIO L and R connections to the appro-
priate inputs of each modulator or other desired
device.
Then connect the power supply power connector to
the appropriate power source using the supplied
line cord.
DAD860
LOCK
LINK
RS232
PROGRAM
DAD860
LOCK
LINK
RS232
PROGRAM
DAD860
LOCK
LINK
RS232
PROGRAM
DAD860
LOCK
LINK
RS232
PROGRAM
DAD860
LOCK
LINK
RS232
PROGRAM
DAD860
LOCK
LINK
RS232
PROGRAM
DAD860
LOCK
LINK
RS232
PROGRAM
PSM121 POWER SUPPLY
DAD860
LOCK
LINK
RS232
PROGRAM
DAD860
LOCK
LINK
RS232
PROGRAM
DAD860
LOCK
LINK
RS232
PROGRAM
UNIT
DAD860
DRAKE
DAD860 Controller
ENTER
+5 VDC
(4.5A Max)
Pins 1, 4, 7,
12, 15, 18,
21, 24, 27,
+12 VDC
(3A Max)
Pins 2, 3, 5,
6, 8, 9, 11,
13, 14, 16,
17, 19
GND:
Pins 10, 20,
22, 23, 25,
26, 28, 29,
31, 32, 34,
35, 37
30, 33, 36
CONFORMS TO
UL STD 1950
CERTIFIED TO
CAN/CSA STD
C22.2 NO.950-95
37
19
20
1
100-240 V~
50/60 Hz 75 WATTS
~
C
US
3008858
VIDEO OUT
AUDIO
R
L
RF IN
LINK
POWER
VIDEO OUT
AUDIO
R
L
RF IN
LINK
POWER
VIDEO OUT
AUDIO
R
L
RF IN
LINK
POWER
VIDEO OUT
AUDIO
R
L
RF IN
LINK
POWER
VIDEO OUT
AUDIO
R
L
RF IN
LINK
POWER
VIDEO OUT
AUDIO
R
L
RF IN
LINK
POWER
VIDEO OUT
AUDIO
R
L
RF IN
LINK
POWER
VIDEO OUT
AUDIO
R
L
RF IN
LINK
POWER
VIDEO OUT
AUDIO
R
L
RF IN
LINK
POWER
VIDEO OUT
AUDIO
R
L
RF IN
LINK
POWER
COMM
POWER
+5V
+12V
GND