Page 3 of 11
RD122 RACK MOUNT DIMMER
Version 1.4
OWNER’S MANUAL
11/23/2021
www.lightronics.com
Lightronics Inc.
509 Central Drive, Virginia Beach, VA 23454
(757) 486-3588
included drawings at the back of this manual for
clarification. The RD122 is shipped with the power
supply set to provide +15 volts DC console power
when using the 3 pin multiplex protocol. Note the
DMX-512 protocol does NOT provide a means for
console power via the control cable. Systems using
the DMX protocol must have console power supplied
by other means.
CONTROL SIGNAL CONNECTIONS (Units with 5
pin DMX & 7 pin Phoenix connector)
A control signal enters the RD122 through
connectors on the rear of the unit. You can plug the
5 pin control cable into the 5 pin XLR connector or
connect individual wires into the 7 pin Phoenix
connector. Connections to additional DMX devices
can be made via the lower 5 pin XLR connector or
into the 7 pin Phoenix connector. See the included
drawings at the back of this manual for clarification.
SETUP
The RD122 has a front panel LCD display and
operator controls. The display indicates dimmer
status information and is used with the operator
control buttons to set up and monitor dimmer
operation. A menu system is used to access the
various features of the RD122. During normal
dimmer operation the display shows the current
intensity setting for each channel and indicates what
type of dimmer control is in effect. This is called the
STATUS DISPLAY and is shown in the diagram
below.
RESETTING THE UNIT
The RD122 may be reset to a "factory provided"
configuration by holding down the
MENU
button on
the front panel for about 5 seconds. A message
"SYSTEM RESET" will appear on the front panel
LCD display. Release the
MENU
button when you
see the message. Resetting the unit causes the
following actions:
1.
Channel patch is set to 1 to 1.
2.
All channels are set to DMR (relay mode turned
off).
3.
The external switch sensing function is turned
off.
4.
The internally stored scene is turned off (it is
not erased).
5.
The programmable chase pattern is turned off
and erased.
6.
Chase parameters are set to a default set of
conditions. The Default conditions are given in
the table under the section CONTROLLING
CHASER CHARACTERISTICS.
You should perform a setup procedure before using
the unit. Setup includes (1) Setting the channel
assignments the dimmer will respond to and (2)
Setting
individual channels to “DMR” or “RLY”
(relay). Once the setup is completed the unit will
retain the settings until changed by the operator
(including when the unit is powered off and
restarted).
ASSIGNING DIMMER CHANNELS (CHANNEL
PATCHING)
The RD122 has 12 dimming channels labeled 1-12.
Each of these channels may be assigned to any
console channel number from 1 to 512. Multiple
dimmer channels may be assigned to a single
console fader if desired. This gives you the ability to
soft patch at the dimmer itself.
TO ASSIGN DIMMER CHANNELS:
1.
Press the
MENU
once to enter the patch mode.
The display will indicate “PTCH”.
2.
Push
SELECT
. The left display bar graph
channel (for dimmer channel A) will flash and
the currently assigned console channel will be
shown on the display bottom row. Use the
UP
and
DOWN
arrow buttons to change the
console channel assignment for channel 1.
3.
Push
SELECT
to advance to the next dimmer
channel. Continue to assign channels through
channel 12.
STATUS DISPLAY AND
OPERATOR CONTROLS
CSD
CHANNEL LEVEL
BARGRAPHS
CONTROL SIGNAL
INDICATOR
D = DMX
L = LMX
= No Signal
CHASER INDICATOR
C = Chaser Active
= Chaser Off
SCENE INDICATOR
S = Scene Active
= Scene Off
M
EN
U
SE
LE
CT
OPERATOR CONTROL BUTTONS
1
2
3
4
5
6
7
8
9
10
11
12
