73
Specific Setup
Menu options can
be programmed if
multiple options are
available.
If a single key or key combination is programmed for multiple shortcuts, the shortcut with the lowest
number will take precedence.
Logic Inputs and Outputs
Identical to shortcuts assigned to computer keyboard key sequences, the CL-1 has six contacts that
can be programmed to perform Setup Menu items or control the record, play, and stop functions of
the recorder. A switch connected between the assigned pin and ground (pin-7) will form a circuit.
Closing the circuit will activate the programmed action.
The Logic pins on the CL-1 can be set individually as either a switch-closure input or a switch clo-
sure output. The inputs and outputs are “logic low” devices, meaning that to turn “on” an input, it
must be connected to ground (zero volts). Likewise, when an output is “on”, it puts out 0 volts and
when it is “off”, it puts out +5 volts.
Logic Inputs
Confi gured as a switch-closure input, a pin can be connected to a switch that a user has wired to
assigned contact. This switch can then trigger the 744T to begin recording. Other functions can be
assigned as well from the Setup Menu. The switch-closure on a given pin of the CL-1 can be thought
of as just another key on the keyboard. Anything that can be assigned to a key can also be assigned
to a switch.
To confi gure a pin as an input, navigate to
EXT KEYBOARD ASSIGN
in the Setup Menu. Select a new
SHORTCUT
number, then locate the Login inputs amongst the assignable keys. Choosing
LOGIC IN 1
would correspond to pin 1 on the CL-1,
LOGIC IN 2
would correspond to pin 2 on the CL-1, and so
on. After a Logic input is chosen assign the desired action that the Logic input will control.
Logic Outputs
Confi gured as a switch-closure output, the CL-1 can drive LEDs, relays, or any other sort of device
which will accept a TTL-level or similar input. For example, the CL-1 can drive a big red LED con-
nected via a series resistor between the +5V output and a switch-closure output and light up when-
ever the recorder is put into record mode.
To confi gure a pin as an output, go to
CL-1: LOGIC OUT ASSIGN
in the Setup Menu. The Logic
Pin number is on the left hand side (“00”, “01”, etc). Each of these pins can be assigned to un-
defi ned, Stop, Play, Record, or Pause. Note that if a pin is assigned to be both an input (via the
EXT KEYBOARD ASSIGN
Setup Menu) and an output (via the
CL-1: LOGIC OUT ASSIGN
Setup
Menu), the pin will automatically default to an output.
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