Telos ZephyrExpress - Manual (Page 47)

3-6 Z EPHYR E XPRESS HARDWARE
audio will be muted if the coded audio bitstream is corrupted because of transmission
problems.
dp
l
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.
T
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?
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:
p
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.
d
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).
LCD Display
This normally displays the Status screen.
ISDN channel
Data Rate
Transmit
Coding Method
Receive Coding
Method
Audio Sample
Rate