Connector Pin Assignments - Sound Devices 744T User Manual And Technical Information

744T User Guide and Technical Information

Connector Pin Assignments

Each connector type, electrical characteristics, and pin assignment is shown below.
Connector
XLR
(Analog Inputs)
XLR
(AES Inputs)
TA3M
Inputs
TA3M
Master Output Bus
3.5 mm
Master Output Bus
3.5 mm
Headphone
5-pin LEMO
Time code
AES3id (S/PDIF) Inputs
AES3id (S/PDIF) Outputs
Word Clock Input and
Output
FireWire (-1394)
C. Link In / Out
Hirose 4-pin
DC Input
78
v. 2.66 Features and specifications are subject to change. Visit www.sounddevices.com for the latest documentation.
Pin Assignments Notes
1 – ground 7.5k ohm input impedance, mic level
2 – signal (+) 20k ohm input impedance, line level
3 – signal (-) active-balanced
1 – ground transformer-balanced, for use 110 ohm twisted-pair
2 – signal (+) cabling, AES3 specification
3 – signal (-)
1 – ground 20k ohm input impedance, line level
2 – signal (+) active-balanced. Mates with Switchcraft TA3F-type con-
3 – signal (-) nector.
1 – ground 120 ohm output impedance, active balanced.
2 – signal (+) For unbalanced connection, pin-1 ground, pin-2 hot,
3 – signal (-) pin-3 not connected. Mates with Switchcraft TA3F-type
connector.
tip – signal L Master Output Bus signal in an unbalanced, consumer-
ring – signal R electronic level.
sleeve – signal ground
tip – signal L mates with 3.5 mm TRS jack.
ring – signal R
sleeve – signal ground
1 – ground LEMO B-series connector, pin assignments as viewed
2 – SMPTE TC In on panel-mounted connector
3 – ASCII in/out
4 – tuning out
5 – SMPTE TC out
center pin – signal BNC female, unbalanced, coaxial connection, 75 ohm
sleeve – ground connectors recommended
center pin – signal BNC female, unbalanced, coaxial connection, 75 ohm
sleeve – ground connectors recommended
center pin – signal BNC female, unbalanced, coaxial connection, 75 ohm
sleeve – ground connectors recommended
center pin – signal 6-pin male FireWire cable
sleeve – ground
1 – +3.3 V Not a telephone jack!
2 – Tx (output)
3 – ground
4 – Rx (input)
5 – WC in
6 – TC in
1 – ground DC applied to pin-3 will operate and charge the unit
2 – ground, same as pin-1 when on and off
3 – DC (+)
DC applied to pin-4 will operate and charge the unit
4 – DC (+)
when on