Telos ZephyrExpress user manual Quick Results

Now tap the EDIT knob toward the panel. The display will change to look like this:

Using the numeric keypad, enter the local number — usually without an area code — for line 2 of this ISDN circuit. You want to enter line 2, because you’ll be calling it from line 1.

If you’ve placed a manually-dialed call since turning ZephyrExpress on, that number will already be entered. You can erase it, or delete any number you enter by mistake, by turning the EDIT knob counter-clockwise.

When the number is completely entered, tap the EDIT knob toward the panel. This confirms the number. The Go! box will now turn dark:

Tap the Edit knob to place the call.

In a few seconds, ZephyrExpress will beep twice to indicate the connection has been made. The two red LOCK lights towards the lower left of the display screen will light: if they don’t, verify that the status screen shows Transmit L3-DUALand Receive L3-STEREO(see page 1-9).

?Talk into the microphone. You should see the signal, slightly delayed, on both lower volume meters. Turn up the MONITOR 2 RECEIVE volume until you hear the mic in the headphone.CURIOSITY NOTEWhile the signal youÕre hearing sounds almost as good as if the mic were

connected directly to the headphones, youÕre actually listening to it after itÕs gone to the phone companyÕs central office and been sent back to you. Both digital signals Ñ sending and receiving Ñ are multiplexed on the same copper ISDN pair.

But the delay youÕre hearing is not because of the round trip. ItÕs a result of the computer processing necessary to squeeze a high-fidelity signal into a very small amount of digital data.

ZephyrExpress includes features to minimize the effect of this delay during live broadcasts. These include low-delay modes for less critical signals and flexible monitoring to let talent hear their voices locally while receiving music and cues from the distant studio. You’ll learn how to use these features later in this manual.

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