Nput To Vs4000 From Utput Of Ortex Evice; Testing The Audio Inputs And Outputs; Wiring From Vs4000 To Vortex Device - Polycom Vortex EF2241 Application Note

T
ESTING THE
1. Go to S
I
YSTEM NFO
You must enable the codec's internal echo canceller in order for the audio meter
described in Step 2 to work properly.
2. Go to S
I
YSTEM NFO
Your level should be around 0 on the meter. You may also use the loop-back feature to listen to
your own audio in the local room. That feature is under S
3. Go to S
I
YSTEM NFO
4. Go to S
I
YSTEM NFO
W
IRING FROM
The inputs and outputs to most codecs are unbalanced. We recommend keeping the cable
from the Vortex device as short as possible to avoid any common-mode signals that may
corrupt the audio.
I VS4000
NPUT TO FROM
Connect the Positive conductor of the Vortex Device to the Tip of the RCA connector and the Negative
conductor of the Vortex device to Shield of the RCA connector.
The shield of the cable is not connected.
A I
UDIO NPUTS AND
, A S , P A
DMIN ETUP HONE UDIO
, D , A , A
IAGNOSTICS UDIO UDIO
, D , A , G
IAGNOSTICS UDIO ENERATE
, A S , P A
DMIN ETUP HONE UDIO
VS4000
TO
O V
UTPUT OF ORTEX
O
UTPUTS
, and check the E C
CHO
M and then speak into one of the microphones.
ETER
I
YSTEM NFO
T to listen to a codec-generated 1 kHz tone.
ONE
, and un-check the E
V
ORTEX DEVICE
D
EVICE
option.
ANCELLER
, D , N E
IAGNOSTICS EAR ND
C option.
CHO ANCELLER
L .
OOP
45