With conventional MIDI cables any longer cable length could cause corrupted midi data or intermittent signals resulting in notes not triggering, sequencers not starting, channels not switching or missed or wrong notes being played or not during sequences, which, during a concert or performance could be a major disaster!
If you have been searching for a way to run much longer midi connections with error free transmission then your in luck! Again without any interference or loss of data! Well without getting overly technical here is what is happening. This results in error free transmission over distances of up to feet.
Ok here the standard MIDI signals are converted into pulses of light which are then sent through fiber optic cable. Since the fiber optic cable is virtually immune to electrical interference, it can be routed wherever convenient without regard the proximity of electrical noise producers, water or high voltages.
In addition since fiber optic cable is totally non-conducting, ground loops, which can result in loss or corruption of data, are virtually eliminated. From the recording studio to the stage, there are many possibilities and we are only just beginning to see the full potential of the Midi extender line.
Musicians on arena concert tours can now run midi equipment from off stage without the worries of cable length! Why would you need this? Say your keyboard player's normal rig consists of a mountain of keyboards, modules computer gear and rack gadgets, however you want to have a sleek looking stage without any extra equipment except for one or two controllers.
Same deal! Say your running sequences from a computer or Pro tools tracks and want to have the Pro Tools rig stationed off stage somewhere that is not in close proximity to you like back stage or at the front of house mixing console, you will definitely need more than 50 ft. The natural signal is a perfect square wave. Even through with one foot of cable you can see some degradation in the data.
With digital, it all comes down to tolerance, so if you run a cable feet will the input tolerate the resulting amount of degradation. Logic dictates gear is designed to handle some degradation; otherwise, the MIDI maximum length would be 0 feet. Tolerance is going to be equipment-specific; you might have one combination equipment-out to equipment-in that only tolerates 75 feet, whereas you might have another combination that tolerates feet.
The only way to know is to try it. While we have had good luck with making these extreme runs, these were all performed in one environment at our offices. We have never had any major noise problems on any gear we have tested caused by our power or RF in the environment. The equipment tested with is relatively modern, and it seems to meet modern electrical standards. Basically I had a reel of the stuff lying about and needed a very long midi cable. It worked well. This is the midi cord I made. You can use any xlr mic cable.
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