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To Tape/Aux To Tape 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 Aux connector. With two Telco modules instaJ1ed, the left-hand module's Aux output can be jumpered to an External In on the Monitor module for separate Telco 2 tape feed monitoring.

From Hybrid Gain Trim Sets the level of the incoming caller audio from the hybrid. Can be from -10 dBu up to +4 dBu.

Autofeed When lit, the module performs automatic switching as described under Telco Operation on the next page. When unlit, the return mix-minus feed is manually selected.

When two Telco modules are installed both will have the same setting.

Off-Line When lit sends the Off-Line mix to the caJ1er. When two Telco modules are installed both will have the same setting.

Fader 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 hjbrid input level.

Yellow Off Button Turns the module Off.

removing the caller's audio from the selected program bus and changing the caJ1er 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.

P A C I F I C R E S E A R C H & E N G I N E E R I N G

TELCO OPERATION

The first Telco module (Telco 1) is always in-stalled to the left side of the Monitor Module. A second Telco module (Telco 2) can be installed next toTelco l.

When two Telco modules are installed, the two modules must track certain switch settings to en-sure the correct mix-minus is always sent back to the two callers. Thus the Program bus select, Off-line select and Autofeed buttons on the two mod-ules are automatically linked together so that changing any setting on either module affects both modules.

There are two main operational modes for the Telco module(s): Manual and Autofeed.

Manual Mode

The Autofeed button is unlit. Only one Feed source can be selected (Off-Line, Pgm-l, Pgm-2, Pgm-3).

When Off-Line is selected, the caller Feed is the Off-Line mix bus regardless oftheTelco module's onloff status. The caller is not assigned to any pro-gram bus, thus the caller does not go on-air if the module is turned On (typically this would only be done to activate the Start Pulse logic output at module On).

When a Program bus is manually selected, the caller Feed is that Pgm assignment's mix-minus, regardless of the module's on! off status. If the mod-ule was already On, selecting the program bus adds the caller voice to that bus. Turning the module Off removes the caller from the program bus but will not change the caller Feed.

Autofeed Mode

The red Autofeed button is lit. Anyone Pro-gram bus can be selected. When the module is On, the caller Feed is that program bus assignment's mix-minus.

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When the module is turned Off, the caller Feed automatically changes to the Off-Line bus and the Off-line button is lit. The selected Pgm button winks to indicate the assigned program bus. If no bus is yet assigned, the three Pgm buttons flash together to indicate no bus is selected and the caller will not go on-air when the module is turned on.

AirWave Digital Telco Module Configuration

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P A C I F I C R E S E A R C H & E N G I N E E R I N G

Revision A • 3/99

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3 Operation

REMOTE LINE SELECTOR (RLS) MODULE - ANALOG OR DIGITAL VERSION

Each RLS module version (stereo analog or AES-3 digital) contains two electronic switches which share seven common inputs to create a pair of 7 x 2 switchers. The seven sources are independently selectable between the two outputs. There are no signal level trim adjustments on this module. The functional differences of the digital version are within the brackets.

RLS In The seven stereo line-level inputs. Inputs must be at equivalent reference input levels between -10 dBu and +4 dBu. [The seven AES-3 signals connect to pins 1, 2 and 3 only. There is no connection to pins 4, 5 and 6.]

RLS Type A Digital RLS is illustrated. The Analog box is filled for an Analog RLS.

Selector-2 The seven buttons select the input assigned to RLS Out 2. Only one button can be selected at a time.

D Analog

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RLS Out The line-level outputs from Selector-1 and Selector-2. The RLS is a unity gain device, thus the output reference level is equal to the selected input's reference level. [The two AES-3 signals are output on pins 1, 2 and 3 on each connector. There is no connection to pins 4, 5 and 6.]

Selector-1 The seven buttons select the input assigned to RLS Out 1. Only one button can be selected at a time.

P A C I F I C R E S E A R C H & E N G I N E E R I N G