GND
+12V
+5V
POWER
COMM
DAD860 Controller Controls and Connections 7
F1
F2
F3
F4
F5
F6
F7
R1
R2
F1 - LCD DISPLAY -
This displays the selected
DAD860 unit number, the selected parameter, and
its value.
F2 - UP Button -
When in program mode, this
button scrolls upward through the available param-
eter values. When not in the program mode, this
button will have no effect.
F3 - LEFT Button -
This button scrolls counterclock-
wise through the available parameters for the
selected unit.
F4 - UNIT Button -
This button scrolls in numeric
order through the available DAD860 units. When a
unit is selected, its amber LINK LED will flash
continuously. While the LINK light is flashing, the
LCD will display the selected unit number and the
signal to noise ratio of the received signal or “NO
LOCK” if no signal is being received. After a unit is
selected, the controller backlight and the selected
unit’s amber LINK light will extinguish after approxi-
mately 40 seconds if there are no other control
inputs.
F5 - ENTER Button-
Pressing this button for two
seconds will enter the program mode for the se-
lected DAD860. This is indicated by the LCD
flashing on and off at an interval of approximately
one second. Once in the program mode, pressing
ENTER will store the value of the selected param-
eter and exit program mode.
R1 - COMM Connector -
This connector provides a
means of connecting the controller to each of the
DAD860 units. A supplied cable is attached to this
connector the other end of which is terminated in
ten numbered three conductor connectors. The
connector number corresponds to the unit number
of the DAD860 to which it is connected.
R2 - POWER Connector -
This three conductor
connector connects to one of the twelve cables from
the PSM121 power supply to supply power for the
programmer.
FRONT PANEL INDICATORS & CONNECTIONS
REAR PANEL INDICATORS & CONNECTIONS
F7 - DOWN Button -
When in program mode, this
button scrolls downward through the available
parameters. When not in the program mode, it will
have no effect.
ENTER
DAD860 Controller
DRAKE
DAD860
UNIT
POWER SUPPLY
The DAD860 requires multiple power supply voltages
that are all obtained from the Drake model PSM121
power supply module. The PSM121 mounts in the
RMM12 rack tray along with one to twelve DAD860
decoders (or other similar Drake models such as
VMM600 series modulators). The PSM121 provides
+5V, +12V and GND connections to each unit.
The PSM121 operates over a wide range of AC input
voltages from 90 VAC to 240 VAC, 50/60 Hz, and has
an 3 wire line cord receptacle. Power consumption
from the AC line will be around 60 W with twelve
DAD860 decoders installed. In many cases, the
power will be below this level.
F6 - RIGHT Button -
When in program mode, pressing
this button will save the selected parameter value and
will then scroll clockwise to the next parameter, while
remaining in the program mode. When not in program
mode, it will scroll clockwise through available
parameters without saving any data. When in program
mode, it is also used to access secondary menus,
progress through secondary menu trees and to store
the value selections in these menus.
6