There are some versions in the "Performer" sequence software for Mcintosh (from Mark of Unicom Co.) that comply to this signal. These are the input LTC converted to the MTC equivalent message and that signal to MIDI timing clock signal. 4. Because the interface board contains an LTC reader function, various locating operations are possible if time code is recorded on the tape. 5. The GTIO MIDI interface board contains a simplified LTC generator functions. By utilizing a MIDI interface containing these functions, the GTIO can do the following operations. Because the GTIO is controlled by a regular MIDI interface, standardized control and automation is possible in a variety of situations. If the sequencer to be connected and sequencing software comply to MTC, and a tempo map is also provided, a sync system consisting of a recorder master/ MIDI slave can be created easily. 1-2. Installation and Connection Methods MIDI keyboard Computer + MIDI Interface MIDI OUT MIDI IN 2. Mode Select DIP Switches Initially, set the mode selecting DIP switches as follows. When shipped from the plant, DIP switches (1-8) are set to "0" (pointing up). [Mode Set Map] sw 0 1 1 > и о A1 =1 2 A2 = 0 CM it CM < 3 о и 3 11 < 4 > со II о CO II CO < 5 ADRS = FREE ADRS=A 6 VOICE MSG OFF VOICE MSG ON A = A1+A2+A4+A8+1 FRAME 24 25 DF 30 7 0 1 0 1 8 0 0 1 1 2-1. Address Setting (Switches 1 ~ 4) The address of the GT10 is set via switches 1 ~ 4. The address is applied both to the "MIDI charnel" in the channel voice message and the "device number" in the universal system exclusive message. In the GT10, the MIDI channel and die device number are always the same (they cannot be separately numbered). This number is called the "address". MIDI specifications state that device numbers can be specified in the range of 1 ~ 128. However, in the GT10, please note that the range is limited to 1 ~ 16. The setup address is common in both transmitting and receiving. ♦Setup procedure Values 1,2,4 and 8 are assigned to switches 1,2,3 and 4, The value will be "0" when switch is at "0" (up) and be the value assigned to that switch when it is at "1" (down). The address value of 1 ~ 16 can thus be setup by adding "1" to the total value setup by swithes 1 - 4. An example of this procedure will be shown in the following: Address value=Al(Value of SW1) + A2(Value of SW2) + A4(Value of SW3) + A8(Value of __SW4) +1_ _ _ _ _ _ Example 1: Address (MIDI channel) = 1 1 2 3 4 5 6 7 8 0(up) l(down) Example 2: Address (MIDI channel) = 6 1 2 3 4 5 6 7 8 0(up) l(down) Example 3: Address (MDI channel) = 16 1 2 3 4 5 6 7 8 0(up) l(down) 2-2. Address Free Setting (Switch 5) Address free mode is setup via switch 5. Address free mode is the mode in which the message will be accepted even though its MIDI channel and device number do not match the address of the GT10. When not in this mode, only those messages whose address match the GT10 will be processed. Set switch 5 to "0" (up) for address free mode. (Address=l+2+4+8+l=16) (Address= 1+0+4+0+1=6) (Address=0+0f OfOf 1=1) Example 1: Address Free Mode 1 2 3 4 5 6 7 8 0(up) l(down) Example 2: Address = 7 (fixed) 0(up) l(down) : If the device number received is 128 (7FH), the GT10 will enter receive processing mode regardless of whether it is has an address set (switches 1-4) or has the address free setting (switch 5). This is due to the MIDI rule that equipment receiving a 128 (7FH) message must respond regardless of its own device number. : When the GT10 transmits a message containing its own address, it will be sent via address switches 1-4 regardless of the address free setting (switch 5). 2-3. Channel Voice Message Receive/Ignore Setting (Switch 6) When a channel voice message is received by the GT10, the setting of switch 6 determines whether to receive or ignore the channel voice message. 0 (up): Ignore 1 (down): Receive Example 1: Receiving channel voice message of MIDI channel 11 *At this setting, the GT10 can be controlled by sending a "note on message" (transmitting channel 11) to the GT10 from the sequencer or MIDI keyboard. 0(up) l(down) Address=l 1 2-4. SMPTE Time Code Frame Setting (Switches 7 and 8) LTC frame rate output from the internal SMPTE time code generator is setup via switches 7 and 8. This setting will not effect the time code reader but if tach and direction is specified in the time reference via the channel voice message or Fostex system exclusive message, the GT10 will acknowledge the recorder position by this rate 1 2 3 4 5 6 7 8 m 1 2 3 4 5 6 7 8 2+4+l=7 These setting will be ineffective setting. Please refer to "5. Details on Receive/Transmit Message". IftheGTlOis in the mode for acknowledging the recorder position via the tach (tach pulse signal is the signal which indicate the amount of tape travel) and dir (direction signal is the signal indicating tape travel direction) signals, it will forcibly convert under t...
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