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DEMUX 24 USER GUIDE                       

 

 

Zero88 Lighting Ltd, Usk House, Llantarnam Park, Cwmbran, Gwent NP44 3HD, U.K 

Tel: +44 (0) 1633 838088 (24hr Answer Phone) Fax: +44 (0) 1633 867880 

73-402-00                                                       Email: 

[email protected]

 

IM7752 Demux24 Manual Issue 1.0.doc 

www.zero88.com

 

Page 2 of 3 

Memories: 
The Demux 24 will store 12 memories for stand alone 
operation, these can only be re-called if there is no 
DMX present.   
 

1. 

Set-up the scene using the ‘

Manual

’ 

control function or a DMX controller. 

 

2. 

Select 

‘Memory’

 using the ‘Mode’ button. 

 
Using the ‘Up & Down’ Arrows select the required 
memory number and  press the ‘Enter’ button to 
confirm.  A ‘p’ should appear next to the memory to 
signify that it has been programmed. 
 
Holding both the ‘Up & Down’ Arrows for 1 second 
will clear the selected memory. If these buttons are 
held for 5 seconds, ALL memories will be cleared. 
 
Preheats: 
 
Preheats can be selected on a per channel or all 
channel basis. The preheat level is preset to 5% and 
cannot be adjusted. 
 
Select 

‘Preheat’

 by cycling through the modes using 

the ‘Mode’ button. 
 
Select required channel or ‘A’ for  all channels, using 
the ‘Up & Down’ Arrows and press ‘Enter’, to confirm.   
 
Now select on/off using the ‘Up & Down’ Arrows.  
Press ‘Enter’ to confirm and return to the channel 
selection. 
 
Output Laws: 
 
Three output laws are available, which can be 
selected per channel. 
 
Select 

‘Law

’ mode using the ‘Mode’ button.  Using 

the ‘Up & Down’ Arrows select the channel required, 
or ‘A’ for all channels. Press ‘Enter’ to confirm.  Now 
select the law you require, again using the ‘Up & 
Down’ Arrows and press ‘Enter’ to confirm and return 
to the channel selection. 
 

Output Law  

Main Display 

Normal 

Switch 

Linear 

 
Polarity: 
 
 
 
 
 
 
 
 
 
 
Each output socket can be set to positive or negative 
voltage polarity.  
 
Select 

‘Polarity’

 mode using the ‘Mode’ button.  

Using the ‘Up & Down’ Arrows select the socket 
required, or ‘A’ for all sockets. Press ‘Enter’ to 
confirm.  Now select the polarity (

‘Pos’

 or 

‘Neg’

) you 

require, again using the ‘Up & Down’ Arrows and 

press ‘Enter’ to confirm and return to the socket 
selection. 
 
 

Super User: 

 
The Demux 24 has a number of hidden functions, 
located in the Super User Menu.  The super user 
menu’s can only be accessed from the 

Default 

mode 

(No LEDS Lit).  To enter Super User press and hold 
the ‘Up & Down’ Arrows together and press and hold 
the ‘Mode’ button for 5 seconds.  All the mode LED’s 
will flash to indicate the Demux 24 is in super user 
mode. 
 
The ‘Up & Down’ Arrows are used to cycle through 
the various super user functions. Pressing the ‘Mode’ 
button at any point will revert to normal operation.  If 
no buttons are pressed after 20 seconds the Demux 
24 will automatically revert to normal operation. 
 
Lock/Unlock  
 
Press the ‘Up & Down’ Arrows until the display shows 

“LOC”. 

Press ‘Enter’ to confirm this action.  The 

Demux 24 will revert to the Default mode. Pressing 
the ‘Mode’ button now will only cycle between 

Manual Control

 and 

Default 

Mode. 

 
If Super User is entered when the Demux 24 is 
locked, only the unlock function will be available.  The 
display will show 

“UNL”.

 To unlock the Demux 24, 

press and hold the ‘Enter’ button for 5 seconds.  The 
Demux 24 will unlock and exit super user returning to 
the Default mode. 
 
DMX Termination: 
 
Press the ‘Up & Down’ Arrows until the display shows 

“ter”

.  If the Demux 24 is terminated a dot will appear 

at the bottom of the last segment.  Pressing the 
‘Enter’ button will toggle between the two states. 
 
Resetting The Demux 24:  
 
Press the ‘Up & Down’ Arrows until the display shows 

“rset”

.  Press ‘Enter’ to confirm. The display will flash 

briefly to confirm this action.  The Demux 24 will be 
reset to its default settings, shown in the table below: 
 

Set Up Parameter 

State  

Manual Control Levels 

All Off 

DMX Addresses 

Block patch at 001 

DMX Fail Mode 

Hold Last State 

Memory 

Memory Cleared 

Preheat 

Off (0%) for all channels 

Law 

Normal law for all 

channels 

Polarity 

Positive for all output 

sockets 

DMX termination 

Disabled 

 
Firmware Version: 
 
To identify which version of firmware is loaded in the 
Demux 24, press the ‘Up & Down’ Arrows until the 
firmware version is shown in the display 

(e.g. 01.00)

 

The ‘Enter’ button has no use here.  (The firmware 
version will also be shown briefly on start up). 
 
 
 
 

CAUTION 

TO AVOID POSSIBLE DAMAGE TO 

EQUIPMENT, TAKE CARE TO MATCH THE 

POLARITY SETTING ON THE DEMUX 24 TO 

THAT REQUIRED BY CONNECTED 

EQUIPMENT. 

 

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