CAMBRIDGE qt 600 User manual

© Cambridge Sound Management
, LLC
| 404 Wyman St.
QT-
600 Music and Paging Instructions
The QT-600 has 2 auxillary
inputs that can be used for either music or paging. This document will provide guidance for
making the proper connections and isolating problems with the set
The input connection is via a 3-
pin terminal connector, balanced or unbalanced input with 40
line level input (6V max).
To connect to a music or paging source to input A or B
1.
Be sure power is OFF by unplugging power cord from wall outlet. Below are the
2. Balanced Audio Input:
(Most often, but not always the
characteristic of paging
Connect signal wires to + and -
at input A or B.
Connect the shield to GND at
the audio source.
3. Unbalanced Audio Input:
(Typical of music systems.)
A. Mono Signals:
Connect signal wire to both L and R
. Connect
B. Stereo Signals:
Connect signal wires to L and R.
Connect the ground wire
Trouble Shooting
If the volume of the paging system or music is too
Check the volume setting
The QT-
600 is configured to mute both input A and B on delivery. Each zone has a volume level for these inputs. Set
the volume level to 30 Max) for each zone to
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Waltham
,
MA
02
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|
17/349
-
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-
8199
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Fax 17
600 Music and Paging Instructions
inputs that can be used for either music or paging. This document will provide guidance for
making the proper connections and isolating problems with the set
-up.
pin terminal connector, balanced or unbalanced input with 40
To connect to a music or paging source to input A or B
Be sure power is OFF by unplugging power cord from wall outlet. Below are the
connection points
for the Q
characteristic of paging
systems.)
at input A or B.
the audio source.
(Typical of music systems.)
. Connect
the ground wire to GND.
Connect the ground wire
to GND.
If the volume of the paging system or music is too
low, there are a couple ways to test the settings of the Qt
600 is configured to mute both input A and B on delivery. Each zone has a volume level for these inputs. Set
the volume level to 30 Max) for each zone to
test if the sound is being transmitted.
Unbalanced
GND
signal
signal
GND
R
_ or L
+
GND
R
_ or L
+
Balanced
Source
---
+
+
Fax 17
-
349
-
3788 | [email protected]
inputs that can be used for either music or paging. This document will provide guidance for
pin terminal connector, balanced or unbalanced input with 40
K Ohm input impedance
Be sure power is OFF by unplugging power cord from wall outlet. Below are the
connection points
for the Q
T-600
low, there are a couple ways to test the settings of the Qt
-600.
600 is configured to mute both input A and B on delivery. Each zone has a volume level for these inputs. Set
GND
R
_ or L
GND
_ or L

© Cambridge Sound Management
, LLC
| 404 Wyman St.
Test the QT-600 operation
When the QT-
600 is connected to a paging system and there is a volume issue, isolate the problem to the device. The
quickest way to test the QT-
600 is to connect the input to a music sourc
-Take a 1/8 stereo cable
or RCA cable
expose the bare wire, as well
as RED and White insulated wires.
-Separate the insulated conductors
from the
-
Strip back the insulation of the internally insulated RED and WHITE cables 1/8 . This is the signal “+ for the
right channel and the signal “+ for the left channel.
Important Note on Paging Signal
It is important to pay attention to the Qt PRO audio input requirements when implementing paging with your sound
masking system. All Qt PROs require a dry, line
U.S. pro audio line leve
l signal is: +4 dBu, 1.228 (Vrms), 1.737 (Vpk). However Qt PRO can handle signals that are
from ½ to 2 times U.S. pro audio line levels. “Dry” emphasizes that Qt PRO’s paging inputs are not telephone
interfaces and must never see dial tone, ringing volta
output is NOT directly compatible and requires use of a third party paging controller.
Suite 200
Waltham
,
MA
02
451
|
17/349
-
3779 or
800/219
-
8199
|
Fax 17
600 is connected to a paging system and there is a volume issue, isolate the problem to the device. The
600 is to connect the input to a music sourc
e like an Ipod or PC audio output.
or RCA cable
that connects to the music source,
strip back the main insulation ½ to
as RED and White insulated wires.
from the
exposed outer strands, this is the ground
Strip back the insulation of the internally insulated RED and WHITE cables 1/8 . This is the signal “+ for the
right channel and the signal “+ for the left channel.
They connect to R and L respectively on the
It is important to pay attention to the Qt PRO audio input requirements when implementing paging with your sound
masking system. All Qt PROs require a dry, line
-
level signal from the paging source. The specification for a Nominal
l signal is: +4 dBu, 1.228 (Vrms), 1.737 (Vpk). However Qt PRO can handle signals that are
from ½ to 2 times U.S. pro audio line levels. “Dry” emphasizes that Qt PRO’s paging inputs are not telephone
interfaces and must never see dial tone, ringing volta
ge, battery current, etc. This means that a typical FXO/FXS
output is NOT directly compatible and requires use of a third party paging controller.
GND
R
_ or L
+
Fax 17
-
349
-
3788 | [email protected]
600 is connected to a paging system and there is a volume issue, isolate the problem to the device. The
e like an Ipod or PC audio output.
strip back the main insulation ½ to
exposed outer strands, this is the ground
Strip back the insulation of the internally insulated RED and WHITE cables 1/8 . This is the signal “+ for the
They connect to R and L respectively on the
QT-600
It is important to pay attention to the Qt PRO audio input requirements when implementing paging with your sound
level signal from the paging source. The specification for a Nominal
l signal is: +4 dBu, 1.228 (Vrms), 1.737 (Vpk). However Qt PRO can handle signals that are
from ½ to 2 times U.S. pro audio line levels. “Dry” emphasizes that Qt PRO’s paging inputs are not telephone
ge, battery current, etc. This means that a typical FXO/FXS