VoiceLift System • Features and Operation
6
OUT
IN
O
N
12
CTS-
2
MI
X
TO
NE
RS-232
AU
X IN
CTC
+
RL
Y
Tx
IN
Rx
C
NO
OUT
IN
PoleVault Switcher
VLR 102 SR
Secondary Receiver
(optional)
Out
In
VLR 102
Receiver
MLC
Controller
Connection
VLP 102
Pendant
Microphone
or
VLH 102
Handheld
Microphone
1
2
3
L
R
L
R
L
R
AUX AUDIO
INPUT 5
LINE OUT
VOICELIFT
RECEIVER
PAGING
SENSOR
DO NOT
GROUND
OR SHORT
SPEAKER
OUTPUTS
1B RGB
1A RGB
2B RGB
2A RGB
3B RGB
/VIDEO
4B RGB
/VIDEO
3A RGB
4A RGB
I
N
P
U
T
S
RS-232 MLC/IR
2/4/8
Ohms
CLASS 2 WIRING
AMPLIFIED AUDIO OUT
VOL/MUTE
Tx Rx IR
12V
10V
50mA
POWER
US
LISTED
17TT
AUDIO/VIDEO
APPARATUS
®
RGB
VIDEO
OUTPUTS
CONTROL
N15779
12V
5A MAX
Figure 3.
VoiceLift System Connections and Audio Signal Path
a
Microphone
— The VLP 102 Pendant Microphone or the VLH 102 Handheld
Microphone picks up speech from the instructor and transmits a mono audio signal
via infrared (IR) on the selected channel (2.3 MHz or 2.8 MHz).
b
Receivers
— The VLR 102 receiver and the optional VLR 102 secondary receivers pick
up the IR signal from the microphone. If secondary receivers are present, the VLR 102
processes the signal from them. The receivers output a balanced -10 dBV line level
signal via an RJ-45 connector. The signal is passed to the PoleVault switcher through
an unshielded twisted pair (UTP) cable.
c
PoleVault switcher
— The PoleVault switcher also functions as an amplifier for the
VoiceLift System. It receives the audio signal from the VLR 102 receiver, amplifies it,
and sends it to strategically placed speakers.