Doug Fleenor Design 2322DMX RS-232 to DMX Interface

The Doug Fleenor Design RS-232 to DMX interface allows advanced A/V control systems and computers to operate standard DMX512 devices such as dimmers and moving lights. It can also be used to allow an RS-232-based control system to receive DMX512 data. The RS-232 protocol used for this communication is made up of simple ASCII strings sent or received at 9600 baud. The interface can set and fade DMX channels to specific levels. It can also record and play 20 presets, each with individual fade times. The interface can be used to capture incoming levels produced by an outside DMX source. The RS-232 port appears on the front panel as a standard DB-9 connector. Another RS-232 port is available on the rear panel through a 3 pin female XLR connector. Only one of these connections can be used at a time. For simple operation, the Windows Hyperterminal program can be used to communicate with the interface.

Doug Fleenor Design RS2322DMX Specifications:

• DMX data rate: 250 Kb/s
• DMX circuit: ESD protected EIA-485 transceiver( LT1785)
• DMX signal: Fully opto-isolated, bi-directional
• DMX connectors:
  • Gold-plated male 5-pin XLR (Neutrik D-1 series).
  • Gold-plated female 5-pin XLR (Neutrik D-1 series). All pins wired through.
  • Pin 1 = common, Pin 2 = Data-, Pin 3 =Data+.
• RS-232 data rate: 9600 bps, 8 data bits, 1 start bit, 1 stop bit, no parity
• RS-232 circuit:
  • RS-232 driver (MAX232)
  • Outputs are short circuit protected but not over voltage protected.
• RS-232 signal: RS-232 driver yields an approximate +/- 10 volt signal
• RS-232 connector:
  • DB9 (male)
    • Pin 2 = receive, Pin 3 = transmit, Pin 5 = common, Pin 7 = RTS, Pin 8 = CTS
    • (DB9 Female to Female, null modem cable provided)
  • Gold-plated female 3-pin XLR (Neutrik D-1 series).
  • Pin 1 = common, Pin 2 = receive, Pin 3 = transmit.
• User interface: Start address set via a three digit thumbwheel switch
• Indicators: Red power LED, Green DMX signal LED, Green MIMIC LED
• Power input: 100 - 120 volts, 50/60 hertz, 12 watts (208-240 volt optional)
• Color: Silver hammertone with black front and back panels
• Dimensions: 6.5" D x 1.7" H x 8.25" W (19" rack kits available - sold separately)
• Weight: 3.3 lbs