Gai-tronics L3149B C200 Advanced Deskset Manual de usuario descargar pdf (Pagina 43)

L3149B (C200) Advanced Tone Remote Desk Set Installation

Using a Communications Service Analyzer, or other RF generator, inject a fully-quieted (e.g.1000 micro-

volt) signal into the antenna port of the base station. Enable the RF generator’s 1 kHz tone, modulated at

rated system deviation. Note the level of the 1 kHz tone imposed on the line at the remote line terminals.

Program the desk set’s line level to the setting that approximates the audio level previously measured.

Refer to the following table for these settings:

Setting Line Level (600 Ohm)

03 −10 dBm

07 −5 dBm

0C 0 dBm

18 +5 dBm

2D +10 dBm

If an RF service monitor is not available, use a portable or mobile radio. Transmit to the station and

measure the nominal voice audio on the desk set telephone line. Set the desk set receive level to the

nearest level that was measured according to the table above.

PROG 2/6 - Line In Sensitivity

After entering the main programming selection mode, press the PROG 2/6 button to allow adjustment of

the line-in sensitivity. This adjustment allows the desk set to compensate for a range of 0 to 15 dB of

line loss in 3-dB increments. The compensation is considered a pre-gain to the line-in circuitry of the

desk set.

For example, if the RX audio output of the radio tone panel or TNA200 is 0 dBm and the telephone

system has 10 dB of line loss, the desk set line input sensitivity should be set to level 4 (−9 dBm) to

accommodate the 10 dB of incurred line loss. After pressing the

PROG 2/6, the display indicates the

current line-in setting. The buttons function as follows:

Button Line-in Sensitivity Mode Function:

VOLUME Up Decreases the line-in sensitivity or reduces the pre-gain for the line input.

VOLUME Down Increases the line-in sensitivity or increases the pre-gain for the line input line.

TRANSMIT

Saves the current setting and exits back to the main selection mode.

MONITOR

Restores the previously programmed setting.

Exits the line-in sensitivity mode without saving the selection, but maintains the

current setting until the power to the unit is cycled. This is useful for experimenting

with different settings.

PROG 3/7 - Internal Diagnostics

There are four internal diagnostic modes available; dc module, relay module, RS-232, and keyboard.

After the internal diagnostic mode has been entered, they are accessed using the programming buttons as

follows:

1 2 ... 38 39 40 41 42 43 44 45 46 47 48 ... 91 92

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Gai-tronics L3149B C200 Advanced Deskset Manual de usuario Pagina 43