Telephone Hybrid Module Th3800 - seemix seeport 2 User Manual

3. MODULES
3.3

Telephone Hybrid Module TH3800

GAIN
+/-20 dB fine gain adjustment
EQ
Equalizer +/-12 dB, 150 Hz to 4,8 kHz peak/dip.
AUX 1-4
Aux output pre-post selectors and level pots. AUX 1/2 has a
center off switch and no pot. Post fader may
be taken before or after AB ON switch (jumper selectable).
SEND LEVEL
Level potentiometer for return signal to incoming caller. The
LEVEL LED indicates that the SEND level limiter is active.
SEND BUTTONS
Interlocking switches for selecting return signal to caller.
Caller may be sent any one of AUX1 or AUX2 signals
(jumper selectable), PFL, A+B (PGM) or an external signal
(EXT) connected at the back of the module.
"SET" OFF
"SET" OFF LED indicates that the telephone set is
disconnected. This is activated by the CONNECT button or
by CUE1 or CUE2 (jumper selectable). CUE1 or CUE2 may
be activated by any other channel when on air (eg. for red
light). This therefore avoids ringing interuption when for ex-
ample a local mic is live.
CONNECT
This button activates the hybrid function itself and connects
the line to the channel. It also disconnects the telephone
set (100ms after making the channel connection) as mentio-
ned above. Releasing the connect button breaks the con-
nection to the mixer channel and re-connects the telephone
set (again after 100ms) to enable off air conversation. NB:
The set will only be re-connected when the relevant CUE
signal is not present, e.g. local mic which controls red light is
off air.
CALL
The call LED gives a visual indication of the presence of an
incoming call. This is useful when ringing has been deacti-
vated by one of the cue busses when on air.
PAN
Pan potentiometer. Feeds main outputs if A/B ON switch is
depressed.
ON AIR LED
This is lit when the fader is open and the AB Switch is ON.
AB ON
Routes signal to A and B mix busses.
PFL
Pre-fade listen, with LED. Jumper settings determine
whether PFL is cut when channel is On Air, or is indepen-
dent of On Air status.
The drawing in the upper left corner of the module shows
the connections on the back panel.
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