Panasonic 744T User Manual

Specifi cations 

53

Each connector type, electrical characteristics, and pin assignment is shown below. 

 

1 – ground 
2 – signal (+) 
3 – signal (-) 

4000 ohm input impedance, mic level 
20k ohm input impedance, line level 
active-balanced  

 

1 – ground 
2 – signal (+) 
3 – signal (-) 

transformer-balanced, for use 110 ohm twisted-pair 
cabling, AES3 specification 

 

1 – ground 
2 – signal (+) 
3 – signal (-) 

20k ohm input impedance, line level 
active-balanced. Mates with Switchcraft TA3F-type con-
nector.  

 

1 – ground 
2 – signal (+) 
3 – signal (-) 

120 ohm output impedance, active balanced.  
For unbalanced connection, pin-1 ground, pin-2 hot, 
pin-3 not connected. Mates with Switchcraft TA3F-type 
connector. 

 

tip – signal L 
ring – signal R 
sleeve – signal ground 

Master Output Bus signal in an unbalanced, consumer-
electronic level. 

 

tip – signal L 
ring – signal R 
sleeve – signal ground 

mates with 3.5 mm TRS jack.

 

1 – ground 
2 – SMPTE In 
3 – ASCII in/out 
4 – tuning out 
5 – time code out 

LEMO B-series connector 

 

center pin – signal 
sleeve – ground 

BNC female, unbalanced, coaxial connection, 75 ohm 
connectors recommended 

 

center pin – signal 
sleeve – ground 

BNC female, unbalanced, coaxial connection, 75 ohm 
connectors recommended 

 

center pin – signal 
sleeve – ground 

BNC female, unbalanced, coaxial connection, 75 ohm 
connectors recommended 

 

center pin – signal 
sleeve – ground 

6-pin male FireWire cable 

 

1 – +3.3 V 
2 – Tx (output) 
3 – ground 
4 – Rx (input) 
5 – WC in 
6 – TC in 

Not a telephone jack! 

 

1 – ground 
2 – ground, same as pin-1 
3 – DC (+) charge 
4 – DC (+) operate