DMX DECELERATOR vs DMX DECELERATOR II differences
The original DMX DECELERATOR offered two output speeds: SLOW and FAST. The update rates were 20 and 40 Hz respectively. The differences between the two output speeds is achieved by manipulating the break, mark-after-break, and inter-byte timing parameters.
The new DMX DECELERATOR II offers three output speeds and a new BYPASS mode. The FAST output is equal to that of the original DMX DECELERATOR; 40 Hz. The SLOW output is equal to that of the original DMX DECELERATOR; 20 Hz. The new MEDIUM speed output operates at 30 Hz. This allows the user to select the fastest speed possible while maintaining reliable control of the system even when non-compliant devices are present.
The new BYPASS mode directly copies the incoming DMX data to the output without varying its timing or update rate at all. The output is always opto-isolated by the DMX DECELERATOR II. By using this mode, you can determine if a DMX compatibility problem is related to a timing issue or an electrical isolation problem. When attempting to correct a flickering fixture, you can demonstrate that there is a timing problem by using the BYPASS mode to electrically isolate the signal without altering its timing. In many cases, the flickering will continue to be present until you select one of the re-timed output modes. This is a positive indication that the DMX signal timing is what was causing the flickering.