Macrotel DIGITAL DIGITAL STUDIO TELEPHONE HYBRID Operating manual (Rel. 1.1) Via Caduti Di Sabbiuno 6/F • 40011 Anzola Emilia • Bologna • Italy +39 051 736555 • Fax. +39 051 736170 e-mail: info@axeltechnology.com • web site: www.axeltechnology.
Macrotel DIGITAL Pag.
Macrotel DIGITAL CONTENTS 1 INTRODUCTION .................................................................................................................................................... 4 1.1 2 EQUIPMENT DESCRIPTION ............................................................................................................................... 5 2.1 2.2 3 AUDIO INPUT (SEND) ................................................................................................................................
Macrotel DIGITAL 1 INTRODUCTION Macrotel Digital is a single line digital telephone hybrid, especially designed to fit all TV and radio station requirements. With the variety of telephone systems in the world today, from cellular mobile phones to analog and to digital, it’s increasingly difficult to have all callers sound the same on-air in a broadcast environment.
Macrotel DIGITAL 2 EQUIPMENT DESCRIPTION 2.1 FRONT PANEL Send potentiometer it adjusts the level of audio signal sent to phone caller. At its midpoint (6 o’clock position), the pot is set for nominal send level (0dBm). Aux-in potentiometer It adjusts the level of the auxiliary send audio coming from the remote connector input and going onto the telephone line to the caller. At its midpoint (6 o’clock position), the pot is set for nominal level (0dBm).
Macrotel DIGITAL 2.2 REAR PANEL ON/OFF main switch the led inside switchs on/off accordingly.
Macrotel DIGITAL 3 WIRING AND CONNECTIONS We suggest to use high quality wires, well protected, and balanced connections to avoid external EMD. 3.1 AUDIO INPUT (SEND) The equipment features electronically balanced XLR female inputs (line level). XLR pinout: Pin 1 Pin 2 Pin 3 Gnd Signal Return If any balanced connection is possible, please connect the cold pole (Pin 3) to the ground (Pin 1). Factory preset input impedance is 10 kΩ.
Macrotel DIGITAL 3.2 AUDIO OUTPUT (RECEIVE AND REC OUT) The equipment features XLR analog outputs electronically balanced by high-quality buffers, capable of withstanding even low-impedance loads (600Ω), with levels of up to +20 dBu. XLR pinout: Pin 1 Pin 2 Pin 3 Gnd Signal Return In case of unbalanced connections, connect the cold pole (Pin 3) to the ground (Pin 1). Pag.
Macrotel DIGITAL 3.
Macrotel DIGITAL 3.5 PHONE SET CONNECTION This RJ11 connector will accept 6 conductor modular plugs, but only the 2 central conductors (typically Red & Green ) are used for connection to a standard analog telephone set. The telephone line is present at this connector when the hybrid is off. The telephone line is not present at this connector when the hybrid is on 3.6 HEADPHONES JACK 1/4. Stereo Jack - Headphone plug allows connection to an external headphone set.
Macrotel DIGITAL 4 SETTINGS 4.1 DIP SWITCHES SETTING DIP SWITCHES are .off. in the down position and .on. in the up position. DIP SWITCH 1 Enables/disables the Burst Adapt feature. In the .off position (down) the hybrid is in Auto Adapt Mode. In the .on. position (up) the hybrid will send a noise burst to the telephone line and aggressively adapt before returning to Auto Adapt Mode. Each press of the ON button will generate a new noise burst.
Macrotel DIGITAL augmenting the level of .soft. callers and attenuating the level of .loud. callers. This helps provide more uniform caller audio levels at the caller output of the hybrid. The AGC works to achieve an equivalent average caller level of -30dBm from the telephone circuit DIP SWITCH 10 Enables/disables the Automatic Mix-Minus feature. In the .off. position (down) the Automatic Mix-Minus feature is disabled. In the .on. position (up) the Automatic Mix-Minus feature is enabled.
Macrotel DIGITAL 5 OPERATION 5.1 TRAINING THE TELEPHONE ECHO CANCELLER Upon connection to the telephone line, the digital hybrid will automatically begin its telephone echo cancellation process. This will optimize the send to caller separation. If the send to caller separation is not sufficient, you may force the hybrid to .train. itself to the telephone line by pressing and holding the ON button for one second. After one second, the hybrid will emit a burst of white noise.
Macrotel DIGITAL 6 BLOCK DIAGRAM Pag.
Macrotel DIGITAL 7 TECHNICAL SPECIFICATIONS GENERAL DATA Power Supply Dimension Weight Operating Temperature Compliance TELCO INTERFACE 220 / 110V 50 / 60 Hz 30VA 434x351x44mm (1 rack unit) around 4 Kg 0-38°C FCC, CSA, CE and CTR21 AUDIO IN / OUT Tel line connector Capability Tel Set connector RJ 11 (A-Lead supervision) POTS line, analog extension from a PBX or dry line (no DC offset voltage). RJ 11 (A-Lead supervision) TELEPHONE TRANSMIT Send input connector Send input level XLR, electr.
