Sound Devices 788T - Manual (Page 110)

Jam Time Code Item Jams given TimeCode parameter
Edit Time Code Item Opens the TimeCode: Jam Menu Edit screen for the given parameter
Key Shortcuts Simulates a front panel key shortcut. Ex: (Stop+Play) opens TakeList Menu
Logic In
The Logic Input enables external devices to initiate functions on the 788T. This is commonly used for
“remote rolling” using a mixing console with a record control.
The function assigned to the logic input is set in the Setup Menu option KEYBOARD/LOGIC IN: ASSIGN .
Almost any 788T function can be assigned. The default function is RECORD.
Connect pin-9 of the rear panel DE-15 connector to the required logic output of an external remote
control or mixer.
See Connector Pin Assignments. The 788T function is triggered when a low voltage
appears on pin-9. High and Low are defi ned as follows:
• Low Input = 0.8 V or lower
• High Input = 2.0 V or higher
Logic Out (Record Tally)
The 788T provides a record tally output via the Logic Output pin on the rear panel DE-15 connector.
See Connector Pin Assignments. This can be used to initiate an external recording or logging device,
for providing a record tally signal back to an external mixer or for driving an external Record LED or
relay directly via a suitable resistor. The Logic output is able to source or sink up to 500 mA.
The logic output pin can be set to go high or low when record is initiated on the 788T. This setting is
maintained in the Setup Menu option LOGIC OUT: ASSIGN.
Logic Out Assign Setting Logic Output Voltage in Record Mode
(DC potential at Pin-8 of DB 15 connector referenced to Chassis Ground)
Undefined Indeterminate
High Upon Record 4.5 – 5.5 Volts
Low Upon Record < 0.5 Volts
Multi-Unit Linking Via C. Link
The proprietary C. Link (control link) connection enables multiple 7-Series recorders to be connected
for recordings requiring high track counts. C. Link also enables connection to the CL-1 Remote Con-
trol and Keyboard Interface and the CL-2 Remote Fader.
When linked, the 7-Series recorders have a master/slave relationship. The master recorder and
the slave unit will share accurate start and stop record times. Multiple units can be daisy-chained
together to provide even higher numbers of record tracks. The C. Link protocol links carries the fol-
lowing data:
• Word clock
• Time code information (788T, 744T, and 702T only)
• Transport control
• False take command
788T/788T-SSD User Guide and Technical Information
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v. 3.02 Features and specifications are subject to change. Visit www.sounddevices.com for the latest documentation.
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emote Control
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