DigiDesign SYNC HD, Руководство пользователя

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Appendix C: Wiring Diagrams and Pin Assignments 83
appendix c
Wiring Diagrams and Pin Assignments
LTC Connectors
The SYNC HD LTC In and LTC Out connectors
are balanced XLRs with Pin 2 wired “+” or “hot,”
Pin 3 wired “–” or “cold,” and Pin 1 wired to
ground (shield). Depending on whether you are
connecting a balanced or unbalanced signal to
these connectors, different wiring configura-
tions are recommended for optimum signal in-
tegrity, especially for long cable runs.
If you are connecting a balanced signal to the
SYNC HD LTC In or LTC Out connectors:
• Pin 1 and ground should be connected at the
input only (not at the output). This will pre-
vent ground loops between the shield and the
Pin 1 conductor.
If you are connecting an unbalanced signal to the
SYNC HD LTC In or LTC Out connectors:
• Connect only Pin 2 to the “+” signal;
• Connect Pin 1 to ground at all inputs and out-
puts.
Wiring diagrams for the SYNC HD LTC In and LTC Out
connectors (balanced signal)
1 2
3
2 1
3
+
–
GND
N.C.
+
–
GND
LTC In
LTC Out
Device
Device
Wiring diagrams for the SYNC HD LTC In and LTC Out
connectors (unbalanced signal)
2 1
3
1 2
3
+
GND
N.C.
+
–
GND
LTC In
LTC Out
Device
Device