The Ultimate Converter is an important 'translator' when a DMX console is added to a legacy dimming system.  Some of this information may be nearly obsolete - but we leave it here just in case.

DMX Ultimate Converter Output Slow
BREAK LENGTH 116 uSEC (112-120)
MARK AFTER BREAK LENGTH 58 uSEC (56-64)
START CODE SET 0
BYTES PER PACKET 512 BYTES (512-512)
BREAK TO BREAK LENGTH 38.462 mSEC (38.447 - 38.499)
UPDATES PER SECOND 26 (25 - 26)

 

DMX Ultimate Converter Output Medium
BREAK LENGTH 116 uSEC (112-124)
MARK AFTER BREAK LENGTH 57 uSEC (56-64)
START CODE SET 0
BYTES PER PACKET 512 BYTES (512-512)
BREAK TO BREAK LENGTH 32.100 mSEC (31.869 - 32.499)
UPDATES PER SECOND 31 (31 - 32)
INTERCHARACTER TIME 20us
MARK BEFORE BREAK 4us

 

DMX Ultimate Converter Output Fast 
BREAK LENGTH 118 uSEC (112-128)
MARK AFTER BREAK LENGTH 62 uSEC (60 - 72)
START CODE SET 0
BYTES PER PACKET 512 BYTES (512-512)
BREAK TO BREAK LENGTH 22.751 mSEC (22.739 - 22.775)
UPDATES PER SECOND 43 (43 - 44)
INTERCHARACTER TIME 0us
MARK BEFORE BREAK 12us

 

Strand Lighting equipment using AMX communication may be found with two different types of connectors, depending on the vintage of the equipment in question.  Four pin XLR type connectors are newer, and meet the USITT standard for AMX192 connections.  Earlier equipment has TA4/TY4 series Mini-Switchcraft connectors.

Adapters are required to use TA4/TY4 equipped devices with newer AMX192 devices.  When wiring adapters, you should be aware that the two connectors' pinouts are different.

GENDER
XLR4 Connectors
Sources (Consoles): MALE
Receivers (Dimmers): FEMALE

TA4/TY4 Connectors
All equipment: FEMALE
All cables: MALE/MALE

CABLE LENGTH
Belden 8723 may be used for adapter cables up to 100 feet long.  For lengths in excess of 100 feet, use Belden 9156.  Total runs in excess of 400 feet are not recommended.

NOTE:
CLOCK+ and CLOCK-  are one twisted pair, ANALOG and COMMON are the other twisted pair.

CONNECTION REFERENCE

XLR Pin TA4 Pin 

Signal

Belden 9723 Belden 9156
 4  1  Clock -  Green  Black
 2  3  Clock+  White  White
 1  2  Common  Black  Black
 3  4  Analog  Red  Red 

480 Channels/devices

Make sure that the K96 wall connector is wired correctly.  K96 connectors are often pinned differently than Ultimate.
K96 wall plates should be pinned:

Shield Pin 1
Data (black) Pin 2
Data (red) Pin 3

The DMX Ultimate Converter sends an 1-1 patch at console power-up.

Replace old ni-cad batteries on the K96 cards.  These hold the rack's softpatch and can be problematic if they are old.

There is a design error in the newer DD-IIB dimmers which requires that the data pair be swapped, that is, D- on pin 8 and D+ on pin 9. If the protocol converter doesn't have a console present output, the function may be disabled at the dimmer by turning on DIP switch B8.

The correct polarity of the inputs to the dimmer is normally:

Pin 8: Data -
Pin 9: Data +

The correct pin out of an adapter cable between the Ultimate converter using the information above is:

ULTIMATE AVAB DIMMER
Pin 1: Ground Pin 7: Signal Ground
Pin 2: Data - Pin 8: Data -
Pin 3: Data + Pin 9: Data +
Pin 4: OC Drive Pin 12: Console Present

This applies to Avab dimmers that receive AVAB as well as DMX data.

Additionally , there are still some AVAB 202 series consoles in use. These desks use an 8-pin DIN connector for data output.
The pinout for the AVAB 202 series is as follows:

Pin 1: Data -
Pin 2: Common
Pin 3: Console Present
Pin 4: Data +

There is auxiliary 15 VDC power present on pins 6&8, so be careful that these wires don't get accidentally shorted to the data wires.