Behringer manual Midiimplementation, Specifications, MIDI FOOT CONTROLLER FCB1010

MIDI FOOT CONTROLLER FCB1010

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￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿ ￿￿￿￿￿￿￿

Basic	Default	1-16
Channel	Changed	1-16
Mode	Default	x	x
	Messages	x	x
Note		0-127	x	programmable
Number				1-128
Velocity	Note ON	0,64	x
	Note OFF	x	x
After	Keys	x	x
		x	x
Touch
	Channels
Control		0-127	x
Progr.		o	x	programmable
Change	True #			1-128
System
Exclusive		o	o
System	Song Pos.	x	x
	Song Sel.	x	x
Common
	Tune	x	x
System	Clock	x	x
Real Time	Commands	x	x
Aux	Local ON/OFF	x	x
Messages	All notes OFF	x	x
	Active Sense	x	x
	Reset	x	x
Notes		Soft Thru	/ Merge Function
O = YES, X = NO
Mode 1:	OMNI ON
Mode 2:	OMNI OFF

Tab. 5.1: MIDI Implementation

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
	120 V~, 60 Hz
	Europe/U.K./Australia
	230 V~, 50 Hz
	Japan
	100 V~, 50 - 60 Hz
	General export model
	120/230 V~, 50 - 60 Hz
Power consumption	10 W
Fuse	100 - 120 V~: T 100 mA H
	200 - 240 V~: T 50 mA H
Mains connection	Standard IEC connector
DIMENSIONS/WEIGHT
Dimensions (H x W x D)	approx. 2 3/8" (60 mm) x 27"
	(687 mm) x 8 3/4" (221 mm)
Weight	approx. 3.5 kg (7.71 lbs)

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.

6. SPECIFICATIONS 15