Akai DD1500 User Manual page 231

The applications for these inputs are enormous. You may, as mentioned, build a simple
play only remote. You may use the GPOs of another machine to remotely control the
DD1500 (for example, a dialogue recording looping recorder). Some mixing consoles have
simple transport controls which could be wired for simple remote control of a DD1500.
Many possibilities.
Press EXIT to leave this page. You will be returned to the main SYSTEM SETUP page.
GPO
Pressing F1 - GPO - gives this screen:
This page allows you to set the parameters for the General Purpose Outputs (GPOs). the
parameters are:
GPO1-4
ACTIVE
FUNCTION
Version 2.00 - March, 1996
PLAY BACKWARDS - When a TTL pulse is received, the
DD1500 will play backwards.
GRAB IN MARK - When a TTL pulse is received, it will mark
an IN point.
GRAB SYNC MARK - When a TTL pulse is received, it will
mark a SYNC point.
GRAB OUT MARK - When a TTL pulse is received, it will
mark an OUT point.
RESET BIPHASE - This will reset the biphase receiver.
TOGGLE EXT.TIME - When a TTL pulse is received, it will
switch on the EXT. TIME key.
This selects which GPO you are setting.
Allows you to select OFF, HIGH or LOW. OFF switches the
GPO function off. HIGH selects that the GPO is normally
low (0V) and when the selected function is activated, will
send out a +5V TTL signal. When set to LOW, the GPO is
normally high +5V) and sends out a 0V TTL signal when
the selected function is activated.
A variety of functions may be applied to the GPOs. These
are:
PLAYING - The DD1500 will send out a TTL pulse when
PLAY is pressed.
STOPPED - The DD1500 will send out a TTL pulse when
STOP is pressed.
LOCATING - The DD1500 will send out a TTL pulse when
locating to a timecode position.
RECORDING - The DD1500 will send out a TTL pulse when
RECORD is pressed.
SYSTEM - I/O - 22
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