D&R AIRMATE-USB Manual - page 20
Before going “live” with your caller, you will need to adjust the optimum RC balance to create the best separation
of in and outgoing signals to the telephone line, otherwise your listeners will be presented with bad quality audio.
These adjustments are only required once when installing the Airmate-USB.
To achieve the optimum attenuation, you must adjust the C and R balance first.
This is how it is performed:
1. Check if the Telephone connection is established and all connections to the mixing console are correctly
wired.
2. Send an audio signal to the telephone line by activating another module, for example, a CD player.
3. Now activate the CUE button of the TELCO module where the telephone line is connected.
4. You will faintly hear the send signal coming out of the mixing console.
5. Adjust the R-Balance for minimum feed through of the mixers send signal.
6. Listen now which switch position of the C-balance gives a further reduction of the return signal.
7. Maybe it is good to re-adjust the R-balance after having selected another switch position.
8. Repeat steps 5 and 6 until no further improvement is achieved for this telephone line.
9. Note: If you use the mixer in different locations this procedure must be done again.
Below is an explanation for the German area where different telephone connectors are used.
Eingang und Ausgang Telefonhybrid Module (RJ11):
Pin I : nicht belegt
Pin 2 : Amt Leitung A
Pin 3 : Amt Leitung B
Pin 4 : nicht belegt
Anschluss Telefon (RJ11):
Pin I: nicht belegt
Pin 2: nicht belegt
Pin 3: Amt Leitung A
Pin 4: Amt Leitung B
Pin 5: nicht belegt
Pin 6: nicht belegt,
oder bei Nichtfunktion:
Pin I: nicht belegt
Pin 2: Amt Leitung B
Pin 3: nicht belegt
Pin 4: nicht belegt
Pin 5: Amt Leitung A
Pin 6: nicht belegt
Ein Verbindungskabel ist durch ein Fachmann entsprechend anzupassen!
13. SUMMERY
We hope this manual has given you sufficient information to use this new AIRMATE-USB mixer to the extreme
specs it was designed to deliver.
If you require more info please contact your local dealer or send us an email at
info@d-r.nl
and we will answer
your email within 24 hours during weekdays.
In case you have bought this mixer from a previous owner, check out the dealer in your area on our website
www.d-r.nl
in case you need assistance.