FS-DMX T - Uncategorized American Audio - Free user manual and instructions
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| Product Type | DMX Terminator |
| Brand | American Audio |
| Model | FS-DMX T |
| Connector Type | XLR Male |
| Pin Configuration | 3-pin (universal DMX) |
| Termination Resistance | 120 Ω between pins 2 and 3 |
| Compatible Standard | DMX512-A |
| Housing Material | Metal (zinc alloy) with strain relief |
| Dimensions (approx) | 4.0 x 2.5 x 2.5 cm |
| Weight | 0.05 kg |
| Power Supply | Passive (no power required) |
| Main Function | Terminates DMX512 data line to prevent signal reflections |
| Installation | Plug into the DMX OUT of the last device in the chain |
| Maintenance | Clean with a soft dry cloth; avoid moisture and solvents |
| Safety | For DMX signal use only; never connect to power lines |
| Repairability | No user-serviceable parts; replace the terminator if damaged |
| General Information | Compatible with all DMX512 lighting fixtures and controllers |
| Warranty | Limited 1-year warranty (via American Audio) |
| Package Contents | 1 x DMX Terminator |
Frequently Asked Questions - FS-DMX T American Audio
What is a DMX terminator and why do I need one?
A DMX terminator is a small device with a 120 Ω resistor that plugs into the last fixture in a DMX512 chain. It prevents electrical reflections on the data line that can cause flickering or erratic behavior. Use the FS-DMX T at the end of the DMX run to ensure stable communication.
Where should I connect the FS-DMX T?
Connect it to the DMX OUT connector of the last DMX device in your chain. This resistance should match the characteristic impedance of the cable (120 Ω) to absorb the signal and reduce reflections.
Can I use this with a 5-pin DMX system?
The FS-DMX T is designed for 3-pin XLR connectors, which are common in entertainment lighting. If your system uses 5-pin connectors, you will need a 5-pin to 3-pin adapter or a dedicated 5-pin terminator. Do not adapt unless you are sure of the pin configuration.
How does the 120 Ω resistor work?
The resistor is placed across pins 2 and 3 (data - and data +). It matches the cable's characteristic impedance, which prevents the DMX signal from bouncing back at the end of the line. This ensures better signal integrity, especially over long distances or with many devices.
Do I need a terminator for short DMX runs?
Officially, the DMX512 standard recommends a terminator on every run, regardless of length. In practice, short runs under 10 meters with only a few devices may work without one, but using the FS-DMX T is always safer and prevents potential issues during installation changes.
Can multiple terminators be used?
No. Only one terminator should be placed at the very end of the DMX chain. Using more than one can cause impedance mismatches and reduce signal strength, leading to communication errors.
Does the FS-DMX T need power?
No. It is a passive device containing only a resistor. It draws no power and does not affect the DMX signal voltage. You can leave it connected indefinitely without any energy consumption.
How do I maintain the terminator?
Keep the contacts clean and dry. Wipe the XLR pins and housing with a soft dry cloth if needed. Do not use solvents or spray cleaners, as they may leave residue and affect electrical contact.
Is this terminator compatible with LED fixtures?
Yes. The FS-DMX T works with all DMX512-compatible devices, including LED fixtures, moving heads, dimmers, and controllers. It terminates the data line in the same way, regardless of the lighting technology.
What are the signs of missing DMX termination?
Common symptoms include flickering, intermittent risposte, or fixtures that randomly reset or ignore commands. These problems often disappear when the FS-DMX T is installed at the end of the chain. It is always a good practice to terminate the line during troubleshooting.
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