Specifications

Appendix C: Wiring Diagrams and Pin Assignments 81
appendix c
Wiring Diagrams and Pin Assignments
LTC
The SYNC I/O 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 I/O 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 I/O LTC In or LTC Out connectors:
• Connect only Pin 2 to the “+” signal;
• Connect Pin 1 to ground at all inputs and out-
puts.
Refer to the following illustration for the correct
wiring diagrams.
Wiring diagrams for the SYNC I/O LTC In and LTC Out
connectors
-
GND
12
3
N.C.
Device
LTC Out
Connector
+
Balanced to Balanced Connection
-
GND
12
3
Device
LTC In
Connector
+
GND
12
3
Device
LTC Out
Connector
+
Balanced to Unbalanced Connection
GND
12
3
Device
LTC In
Connector
+