Telex C-2002 technical manual Line Tone/Local Screen

26 Vega’s C-2002

7.6 Line Tone/Local Screen

The Line setup menus allows for the parameters unique to each line to be setup on a per line basis. Parameters that can be adjusted by pressing the LN1-LN2 keys from the top level menu include: Enable/Disabling of the line, Tone or Local control, Cross Mute, Squelch, TX Monitor, AGC, TX Enabled, and Unselect Audio Forced. The LN1- LN2 keys are active at all times in the menu; for example, to disable AGC on all lines, AGC could be selected on LN1, setup, then LN2 could immediately be pressed from within the AGC menu, eliminating going back and then back through the menus for each line.

7.6.1Enable/Disable the Line

Disabling a line sets the line so that a user cannot select its audio. It would generally be desired to set a line to be disabled if a physical line is not connected to the console. If the line is disabled from this menu, then the console ignores the line select key.

PROG1 - Toggles the line from Enabled to Disabled. PROG3 - Moves to the next menu.

PROG4 - returns to the Opening Menu Screen.

7.6.2Tone or Local Control

Line 2: Enabled

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PROG1 PROG2	PROG3 PROG4

This screen allows the technician to determine if a line is tone control or local control. If a line is tone control then a tone burst is transmitted before voice is allowed to drive the line and a hold tone is sent out with the voice to provide a positive key for the remote adapter. If a line is a local control line then the tone generator is not activated and voice drives the line when the PTT button is pressed. The line number of the selected line appears in the top line of the display. The example shows that line 2 has been selected. The text at the right side of the top line shows which mode the line is programmed with.

PROG1 - Toggles the line from Tone to Local. PROG3 - Moves to the next menu.

PROG4 - returns to the Opening Menu Screen.

Line 2: Tone

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PROG1 PROG2	PROG3 PROG4

7.6.3Crossmute Setup

The crossmute function allows consoles located within the same room to mute the other consoles RX audio while transmitting to prevent feedback. See Section 5 on how to connect this feature on the line cards. This feature can be turned on and off on a per line basis. Disabling crossmute does not disable the input. If the crossmute pin is connected, and the line is pulled low, the console will mute the line. The crossmute enable/disable function only controls the ability of the console to output crossmute. Note: Intercom will not work on lines with crossmute enabled.

PROG1 - Toggle the Cross Mute function ON and OFF. PROG3 - Move to the next menu.

PROG4 - returns to the opening Menu Screen.

Line 2: CrMute ON

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PROG1 PROG2	PROG3 PROG4

7.6.4Squelch Setup

The Squelch function can be turned on a per line basis. It is tied to the level setup by the LAM function. If the LAM LED is blinking, squelch will not be active. If the audio present on the line is below that required to generate a LAM indication and squelch is enabled, no audio will be heard.

PROG1 - Toggle the Squelch function ON and OFF. PROG3 - Move to the next menu.

PROG4 - returns to the opening Menu Screen.

Line 2: Squelch		ON
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PROG1 PROG2	PROG3	PROG4

7.6.5TX Monitor Enable/Disable

The TX monitor allows the operator to listen to what is currently being transmitted. In a 4 wire mode, this allows one console operator to monitor what is being said by another console operator. The other operator could be in the same room or a greater distance away.

Line 1: Txmon ON

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PROG1 PROG2	PROG3 PROG4