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 Page  10  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 

 
CREATING YOUR OWN CUSTOM CHASE PATTERN 
 
The programmable chase pattern is created by setting the intensity for all dimmer channels for each step in the 
chase.  The chase step is then recorded.  This action is then repeated for each additional step to be recorded.  
The channel intensities can be set either from the RD-121 front panel as in manual operation or by using a control 
console. 
 
TO SAVE A CHASE STEP:

 

 
1. 

Create the step from a control console or from the front panel of the dimmer itself by activating the 

 

applicable channels.  Channel intensities are recorded as either full ON or full OFF.  If you want a given 

 

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 hold the front panel 

SELECT

 button until 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 

the 

UP

 arrow button. The display will appear as follows:  

Chs Stp

×

 

Save #01 

 

This is the display for chase step #1.  If you want to record to 

 

another step number - use the 

UP

 and 

DOWN

 arrow buttons to 

 

make the correct step number appear on the lower display row. 

 
4. Push 

SELECT.  

The display will show the message: 

 SAVING 
  NOW !  

 
 
 
 
5. 

The chase step has been recorded when the LCD reverts to its normal STATUS DISPLAY. 

 
The above recording process is repeated for each step in the programmable chase pattern.  See the section 
CONTROLLING CHASER CHARACTERISTICS for information about how the chase can be made to appear 
when activated.  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

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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