Connecting Unbalanced Rca To Balanced Terminal Block; Making An Ef Bus Terminator - Polycom Vortex EF2210 Reference Manual

C U
ONNECTING NBALANCED
RCA Male
Tip
Ring
Figure 30. Cable construction for connecting unbalanced RCA to balanced 3-conductor terminal block.
M EF B
AKING AN
Figure 31. The terminator
Instructions
V EF2211/EF2210 Reference Manual
ORTEX
RCA
TO
Red
Black
1. Connect RCA Tip to terminal block pin 1.
2. Connect RCA Ring to terminal block pin 2.
3. Connect terminal block pin 3 to Shield, and leave Shield floating on RCA end.
Caution!
Do NOT connect the shield at both ends.
Caution!
On the EF2211/EF2210, the terminal block pin 3
is connected to chassis ground. Under no cir-
cumstances should pin 3 be connected to pin 1
or to pin 2. Doing so will add noise to the audio
signal.
T
US ERMINATOR
1 2 3 4 5 6 7 8
To make a terminator (for use when connecting EF2280s), use an RJ45 connector.
Connect pin 3 to pin 6 with an 110 Ohm resistor. A terminator is not required for the
EF2211/EF2210 as it is built in.
B T
ALANCED ERMINAL
110
54
C
ONNECTOR
B
LOCK
3.5 mm Terminal Block
Connector
Red +
Black
-
Shield
Technical Support: 800.932.2774
P
INOUTS
1
2
3