Behringer MIDI FOOT CONTROLLER FCB1010 Manual - Page 14

14 MIDI FOOT CONTROLLER FCB1010 User Manual Almost all devices have a list enclosed which shows the program change number versus preset number assignment. Some units even allow you to freely assign program change commands to preset numbers. Please see the corresponding user's manual for detailed information. 4.2.4 Running status Since the MIDI standard uses a serial transmission format, i.e. transmits data successively, it was soon found that the transmission rate is too low if the system is exploited to its full capacity. To make up for an audibly delayed transmission of MIDI data, the so-called running status was introduced, which suppresses the status byte in two or more identical MIDI messages that follow each other. For example, if the data bytes of a controller (e.g. volume) are changed continuously, the corresponding status byte is sent only once. Only the data byte changes are transmitted, as long as another status byte is sent, i.e. in each message transmitted you can eliminate 8 bits. This is also the reason why NOTE OFF messages are no longer used. When a keyboard player plays a scale on a keyboard and sends these data via MIDI to a computer, each NOTE ON message would be followed by a NOTE OFF message, each time a key is released. The running status would identify the NOTE OFF message as a new status byte and hence send it, which results in a data amount of 8 notes times 8 bits, i.e. 192 bits. Since NOTE ON messages belong to those MIDI messages that are used most often, it was decided to send NOTE ON messages with zero velocity instead. The audible effect is the same, but in the Running Status the data amount can be reduced by 7 times 8 bits, i.e. 56 bits. As a consequence, the overall data amount produced by the scale mentioned above is only 136 bits. With the FCB1010 you are free to switch the Running Status feature on or off (see ch. 2.2.3). 5. MIDI Implementation MIDI Implementation Chart Function Transmitted Recognized Basic Default Channel Changed Mode Default Messages Note Number Velocity Note ON Note OFF After Keys Touch Channels Control Progr. Change True # System Exclusive System Common Song Pos. Song Sel. Tune System Clock Real Time Commands Aux Messages Local ON/OFF All notes OFF Active Sense Reset Notes O = YES, X = NO Mode 1: OMNI ON Mode 2: OMNI OFF 1-16 1-16 x x x x 0-127 x 0,64 x x x x x x x 0-127 x o x o o x x x x x x x x x x x x x x x x x x Soft Thru / Merge Function Tab. 5.1: MIDI Implementation Remarks programmable 1-128 programmable 1-128 6. Specifications MIDI Interface Type 5-pin DIN jacks IN and OUT / THRU Display Type 3-digit LED Switching Output Type 1/4" jack (open) Power Supply Voltage USA/Canada Europe/U.K./Australia Japan General export model Power consumption Fuse Mains connection 120 V~, 60 Hz 230 V~, 50 Hz 100 V~, 50 - 60 Hz 120/230 V~, 50 - 60 Hz 10 W 100 - 120 V~: T 100 mA L 250 V 200 - 240 V~: T 50 mA L 250 V Standard IEC connector Dimensions/Weight Dimensions (H x W x D) Weight approx. 2.4 x 8.7 x 27" approx. 60 x 221 x 687 mm approx. 9.5 lbs / 4.34 kg BEHRINGER is constantly striving to maintain the highest professional standards. As a result of these efforts, modifications may be made from time to time to existing products without prior notice. Specifications and appearance may differ from those listed or illustrated.