Telos ZephyrExpress user manual LCD Display

audio will be muted if the coded audio bitstream is corrupted because of transmission problems.

LCD Display

This normally displays the Status screen.

Transmit

Coding Method

ISDN channel

Data RateReceive Coding Method

Audio Sample

Rate

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When you press the DIAL, DROP , UTIL , or HELP buttons, the screen changes to show that function. Dial, Drop, and Help are self-explanatory. Util opens ZephyrExpress’ Utility menu, where you can change system parameters.

To return to the Status screen from one of the other screens, press the EDIT knob toward the panel for three seconds — it works like a pushbutton, as well as a rotary control. If you’re in a Utility submenu, this takes you to the next higher level; keep holding the knob down until the Status screen reappears.

If you’re in a hurry and don’t want to hold the knob for three seconds, hold it in and turn it counter-clockwise until the Status screen appears.

Screens other than Status time out, and revert to the next higher screen, if you haven’t done anything for a preset time. Adjust the timeout value in the System menu.

The LCD’s contrast and backlighting are adjustable for various viewing conditions, also by using the System menu. The entire menu system is described in section 7.

Blank Screen?

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If ZephyrExpress’ LEDs light when you first apply power but the LCD screen appears dark, or the LCD screen lights but no characters appear, the last user may have left its brightness or contrast at an extreme setting. To reset:

Press the DROP button and hold that button in while turning the EDIT knob clockwise to reset the backlighting. It may take a few turns.

Press the DIAL button and hold that button in while turning the EDIT knob either direction to change the LCD Contrast.

SAFE indicator

The word SAFE lights in red when SAFE MODE is turned on from the rear panel. In this mode, various menus are locked and cannot be changed. You can set which menus will be blocked by using the Safe mode menu (with safe mode turned off at the time, of course).

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