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 Page  8  of 13 

RD - 121  RACK MOUNT DIMMER 

 Version 1.2   

 

 

 

 

 

 

OWNERS MANUAL

 

      

 

 

 

 

02/28/2005 

www.lightronics.com 

Lightronics Inc. 

 

 

 

 

 

509 Central Drive,  Virginia Beach, VA 23454 

 

 

 

 

       (757) 486-3588 

 
 

 

     MENU 

1. 

Push MENU 3 times. The LCD will appear as shown: 

 
 
 
 
 
2. 

Push SELECT.  Then push MENU. The LCD will appear as shown:  The bottom 

 

display row shows the currently selected pattern.  The pattern "4Ch Seq" is 

 

shown as an example.    

Chase# 

×

 

4Ch  Seq 

 
3. 

Use the UP and DOWN arrow buttons to scroll through the available chase 

 

patterns.  Push SELECT when the desired pattern appears.  

 
Note: 

Remember that this action does not activate the chase pattern.  This action selects which pattern will be 

run when activated by the remote switch function. 
 
The available patterns are: 
 

4 CHANNEL SEQUENCE 

8 CHANNEL SEQUENCE 

4 CHANNEL BUILD 

12 CHANNEL SEQUENCE 

6 CHANNEL SEQUENCE 

RANDOM  

6 CHANNEL BUILD 

PROGRAMMABLE 

 
 
CONTROLLING CHASER CHARACTERISTICS 
 
You can control seven characteristics of a chase pattern. These controls are described as follows: 
 

Chase Rate 

The duration of each chase step  (.25 - 999.75 Sec.). 
Default = 1 Sec. 

Chase Fade Rate 

The time for each step to reach maximum intensity  (0 - 100% of step time). 
Default = 100% 

Chase Intensity 

The overall brightness of the chase  (0 - 100%) 
Default = 100% 

Chase Steps 

The maximum number of steps in the chase  (1 - 32) 
Default = 4 

Chase Bounce 

Causes reversal at the end of each sequence  (Ignored during RANDOM). 
Default = Off 

Continuous /Single  

Enables/Disables a "one shot" chase occurance (Ignored during RANDOM). 
Default = Continuous 

Activate Chase at power up 

Enables chase to begin automatically when dimmer is turned on. ** 
Default = Off 

**  Overrides remote switch setting 
 
The default setting is the factory set value.  
 
All of these characteristics can be set via the RD-121 menu system.  See the diagram STRUCTURE OF MENU 
SYSTEM for a complete layout of menu system operation. 
 
 
 
 
 

Summary of Contents for RD-121

Page 1: ...RD 121 RACK MOUNT DIMMER OWNERS MANUAL REVISION 1 2 02 28 2005 www lightronics com Lightronics Inc 509 Central Drive Virginia Beach VA 23454 757 486 3588...

Page 2: ...IMMER CHANNELS 5 TO SET CHANNELS TO DIM OR NON DIM 5 MANUAL OPERATION 5 NORMAL OPERATION 6 INTERNAL SCENE OPERATION 6 TO SAVE A SCENE 6 TO ACTIVATE A STORED SCENE 6 NOTES ABOUT INTERNAL SCENE 7 CHASER...

Page 3: ...r to determine the operating frequency One or more RD 121 dimmers are to be installed into a standard 19 equipment rack with provisions for connection to an appropriate electrical service in accordanc...

Page 4: ...tor into the upper 9 pin connector on the rear of the dimmer In either case the lower 9 pin connector and the ribbon cable jumper that is supplied can be used to connect from the lower connector of th...

Page 5: ...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 bargraph channel for dimmer channel A will flash and the c...

Page 6: ...panel SELECT button until you see the front panel display appears as shown below Scene Save 01 You will have to hold the button down for about 6 seconds 3 Push SELECT The display will show the message...

Page 7: ...e chase The RD 121 may be set to begin chaser functions at power up or in response to a remote switch A bounce option can be imposed on a chase pattern This results in a pattern which runs in its norm...

Page 8: ...RANDOM 6 CHANNEL BUILD PROGRAMMABLE CONTROLLING CHASER CHARACTERISTICS You can control seven characteristics of a chase pattern These controls are described as follows Chase Rate The duration of each...

Page 9: ...nnel SELECT Advance to Next Channel Set Flashing Channel to Relay Dimmer Mode RLY Relay Mode DMR Dimmer Mode SELECT Advance to Next Channel Set Remote Switch Function Not Used Chaser Scene SELECT Exit...

Page 10: ...en channel to be on for a chase step then the channel must be set to greater than 50 intensity Note that the overall intensity of the whole chase pattern may be set using the menu system 2 Press and h...

Page 11: ...nsole Verify the loads and their connections OWNER MAINTENANCE There are no user serviceable parts inside the unit The best way to prolong the life of your unit is to keep is cool clean and dry It is...

Page 12: ...Supplied with each unit Ribbon Cable Jumper Supplied with each unit 3 Pin Multiplex Protocol Input 3 Wire Control Cable Console using 3 pin multiplex protocol DMX 512 CONNECTIONS MULTIPLEX CONNECTIONS...

Page 13: ...82 AND RD 121 DMX 512 CONNECTOR 5 PIN MALE XLR Used on adapter cable MULTIPLEX LMX CONNECTOR 3 PIN MALE XLR Used on rear of chassis 2 1 3 NOT USED 5 1 DMX DATA NOT USED 4 3 2 COMMON CONSOLE POWER DMX...

Page 14: ...s not cover loss or damage direct or indirect arising from the use or inability to use this product F Lightronics reserves the right to make any changes modifications or updates as deemed appropriate...

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