Revision B • 7/00
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3
3 Operation
TELCO INPUT/OUTPUT MODULE
The optional Telco Input/Output module interfaces a telephone hybrid with the console. The module also
provides a host/caller recorder connection. One or two Telco modules may be installed.
H y b r i d
H y b r i d
H y b r i d
H y b r i d
H y b r i d
F r o m
F r o m
F r o m
F r o m
F r o m
connects the caller audio from
the telephone hybrid and
T
TT
T
Tooooo
sends the selected
console mix-minus audio back to the hybrid.
L
L
L
L
L o
o
o
o
o gic Output
gic Output
gic Output
gic Output
gic Output
A Start Pulse and a Stop Pulse
is available for hybrid control. Each is a solid-
state relay tied to a single isolated common.
L
L
L
L
L o
o
o
o
o gic S
gic S
gic S
gic S
gic Se t t i n g s
e t t i n g s
e t t i n g s
e t t i n g s
e t t i n g s
C u e
C u e
C u e
C u e
C u e
and
T
TT
T
Ti m e r
i m e r
i m e r
i m e r
i m e r
, when set to
the left, reset the Cue function and/or the Timer
reset at module On.
T
TT
T
Tape Feed
ape Feed
ape Feed
ape Feed
ape Feed
is only active when
two Telco modules are installed. It sets how the
other caller’s voice gets mixed on this module’s
T
TT
T
To T
o T
o T
o T
o Ta p e
a p e
a p e
a p e
a p e
and
A u x
A u x
A u x
A u x
A u x
outputs. When set to the left,
both callers are mixed together on the left channel.
When set to the right, the other caller is mixed with
the right channel mix-minus audio.
P g m - 1 ,
P g m - 1 ,
P g m - 1 ,
P g m - 1 ,
P g m - 1 , Pgm-2,
Pgm-2,
Pgm-2,
Pgm-2,
Pgm-2, Pgm-3,
Pgm-3,
Pgm-3,
Pgm-3,
Pgm-3, O
O
O
O
Off-line
ff-line
ff-line
ff-line
ff-line
When
lit and the module is On, assigns the caller audio
to the Pgm-1, Pgm-2, Pgm-3 or Off-line buses or
any combination of these buses. Also sends the
associated program mix-minus feed to the caller
based on a preset priority structure (with Off-line
being the highest and Pgm-3 being the lowest
priority). When two Telco modules are installed,
both will automatically share the same
assignments.
R
R
R
R
R e d O n B
e d O n B
e d O n B
e d O n B
e d O n Bu t t
u t t
u t t
u t t
u t to n
o n
o n
o n
o n
Turns the module On,
applying the caller’s audio to the selected buses.
The caller Feed is also switched to the mix-minus
output of the selected bus with the highest priority.
When the Timer reset switch is set to the left, the
timer is reset. When the Cue reset switch is set to
the left, and the Cue is on, the Cue function for
this module is turned off.
T
T
T
T
To
o
o
o
o T
T
T
T
Ta p
a p
a p
a p
a pe / A
e / A
e / A
e / A
e / Au x
u x
u x
u x
u x
T
TT
T
To T
o T
o T
o T
o Ta p e
a p e
a p e
a p e
a p e
connects the caller
audio to the left channel, and the mix-minus
audio (either Off-line or the Pgm assignment
mix-minus) to the right channel of a call
recorder. These same signals are available on
the
A u x
A u x
A u x
A u x
A u x
connector. With two Telco modules
installed, the left-hand module’s
A u x
A u x
A u x
A u x
A u x
output can
be jumpered to an
External In
External In
External In
External In
External In
on the Monitor
module for separate Telco 2 tape feed
monitoring.
F
F
F
F
Frrrrr o m H
o m H
o m H
o m H
o m Hy b r
y b r
y b r
y b r
y b ri d G
i d G
i d G
i d G
i d Ga i n
a i n
a i n
a i n
a i n T
T
T
T
Trrrrr i m
i m
i m
i m
i m
Sets the level of
the incoming caller audio from the hybrid. Can
be from -10 dBu up to +4 dBu.
A
A
A
A
A u t
u t
u t
u t
u to f
o f
o f
o f
o fe e d
e e d
e e d
e e d
e e d
When lit, the module performs
automatic switching as described under Telco
Operation on the next page. When unlit, the
output assignments must be manually selected
and the feed to the caller will be determined by
a preset priority structure (with Off-line being
the highest and Pgm-3 being the lowest priority).
When two Telco modules are installed, both will
automatically share the same assignments.
C
C
C
C
Cu e
u e
u e
u e
u e
When lit sends the pre-fader, pre-On/Off
audio to the console-mounted Cue speaker and
to the console operator’s headphones.
F
F
F
F
Fa d e r
a d e r
a d e r
a d e r
a d e r
100 mm level control. Set the fader at
the reference line (-12 dB) to achieve 0 VU on
the program output meters with a properly
adjusted hybrid input level.
Y
Y
Y
Y
Ye l l o
e l l o
e l l o
e l l o
e l l ow O
w O
w O
w O
w Of f B
f f B
f f B
f f B
f f Bu t t
u t t
u t t
u t t
u t to n
o n
o n
o n
o n
Turns the module
Off, removing the caller’s audio from the
selected buses and changing the caller Feed
to the Off-Line bus when Autofeed is active.
When the Cue reset switch is set to the left,
and the Cue is on, the Cue function for this
module is turned off.
5
0
10
70
50
40
30
20
15
Pgm-1
Pgm-2
Pgm-3
Off-
Line
Cue
Telco
Auto-
Feed
Aux
Start Pulse
Stop Pulse
Common
From
Hybrid
Gain Trim
L
R
L
R
From
To
Hybrid
To Tape
ON
OFF
Cue Reset
Timer Reset
Tape Feed
12
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