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Oxygen 5

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THE CONNECTOR SUPPLIES THE FOLLOWING VOLTAGES:

• + 6 VDC (pin 6)

• GND (pin 1)

These voltages can be used to polarize external optoisolator devices. We suggest to use a

100Ω (or more) resistor in series connection with the phototransistor emitter to prevent the

risk of damages to the photocoupler, due to extra-high current.

4.4 REC OUT OUTPUT

Depending on the internal jumper setting, REC OUT connector (mono-balanced) provides:

§ the only signal incoming from the telephone line (Receive signal)

• the only signal outgoing to the telephone line (Send signal)

• the sum of two signals.

The REC OUT signal (mono) is electronically balanced on female Jack with 0 dB gain.

The pin-out presents standard configuration:

• Sleeve  Ground

• Tip  Signal

• Ring  Return

We suggest to use balanced links. See Appendix A for wire connection schemes

4.5 SEND GAIN CONTROL

It sets the gain from -15dB to + 15dB of the signal send to the telephone line.

4.6 RECEIVE GAIN CONTROL

It sets the gain from -15dB to + 15dB of the signal received from the telephone line.

4.7 EQUALIZATION SECTION

The equalisation section is based on the MID control operating from ± 15dB.

In particular, you can vary the operation frequencies of Mid control between 0.3 and 4.8

KHz (central position: 1 KHz).

You can get a flat frequency response when the potentiometers are in their central

position (underlined by a ‘click’).

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Axel Oxygen 5 Especificaciones Pagina 20