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C
Input connector — This 3.5 mm, 5-pole captive screw connector accepts line level
balanced or unbalanced, mono or stereo audio signals (see to the illustrations below for
proper wiring).
ATTENTION: The length of the exposed wires in the stripping process is critical.
The ideal length is 3/16 inches (5 mm). Any longer and the exposed wires may
touch, causing a short circuit between them. Any shorter and the wires can be
easily pulled out even if tightly fastened by the captive screws.
NOTE: Do not tin the wires. Tinned wires are not as secure in the connector and
could be pulled out.
Unbalanced Stereo Input
Balanced Stereo Input
Tip
Ring
Tip
Ring
12
Sleeves
Tip
Sleeve
Sleeve
Tip
12
Unbalanced Dual Mono Input
Balanced Dual Mono Input
Tip
Ring
12
Sleeve
Tip
Sleeve
12
Do not tin the wires!
Figure 4. Audio Input Connectors
D
Output connector — The 3.5 mm, 5-pole captive screw connector outputs balanced
or unbalanced line level audio (see the illustrations below for proper wiring).
ATTENTION: For unbalanced audio output, connect sleeves to the center ground
pin. DO NOT connect sleeves to the negative (–) contacts.
NOTE: Do not tin the wires. Tinned wires are not as secure in the connector and
could be pulled out.
Do not tin the wires!
Balanced Audio Output
Tip
Ring
Tip
Ring
Sleeves
Unbalanced Audio Output
Tip
No Ground Here
No Ground Here
Tip
Sleeves
12
12
Tip-ring-sleeve and tip-sleeve connections:
Sleeve ( )
Ring (R)
Tip (L)
Tip (+)
Sleeve ( )
Tip-Ring-SleeveTip-Sleeve
Figure 5. Audio Output Connectors
BUC 202 User Guide • Setup and Operation 4