Transmitter Operation; Main Display - LD Systems U500 Serie Manual De Usuario

TRANSMITTER OPERATION

MAIN DISPLAY

After switching on the transmitter, the main screen displays the following information: username, frequency group and channel (GR.xx and CH.xx)
and battery status. Remove the battery compartment cover on the transmitter to release the controls SEL and arrow buttons (hand-held
transmitter: remove the screwable cover shell by rotating it to the left, belt pack transmitter: pull cover shell by pressing on the markings on the
sides of the housing). Now press the arrow button, and the radio frequency, gain and transmission power are displayed (back with arrow button).
GAIN
To avoid distortions and to adjust the transmitter optimally to the input audio signal, it is possible to adjust the audio levels in 3dB increments
from 0dB to -27dB. Open the battery compartment cover as previously described to reveal the controls. Press SEL to access the Edit menu and press
SEL repeatedly, if necessary, to select the menu item GAIN (light background). Now lower the audio level if necessary by repeatedly pressing the
arrow button until you have no more distortion and the peak indicator AF PK in the display of the receiver goes out (watch out for peak levels). To
exit the menu item, press SEL, call up the menu item EXIT by pressing SEL repeatedly if necessary, and confirm by pressing the arrow button. After
approximately 10 seconds of inactivity, the display will automatically return to the main screen.
RF POWER
Adjust the output power of the transmitter according to the application (recommendation: outdoors = 30mW, stage = 10mW, conference setting
= 2mW). Open the battery compartment cover as previously described to reveal the controls. Press SEL to access the Edit menu and press SEL
repeatedly, if necessary, to select the menu item RF POWER (light background). Now, using the arrow keys, select the desired output power (30mW,
10mW, 2mW - in the frequency range of 863 – 865 MHz, the output power is automatically reduced to 10 mW in accordance with legal requirements).
To exit the menu item, press SEL, call up the menu item EXIT by pressing SEL repeatedly if necessary, and confirm by pressing the arrow button. After
approximately 10 seconds of inactivity, the display will automatically return to the main screen.
EXIT
In order to exit the Edit menu and return to the main display, call up the menu item EXIT and confirm by pressing the arrow button.
After approximately 10 seconds of inactivity, the display will automatically return to the main screen.
BATTERY STATUS
The battery status of the transmitter will appear in the display and is constantly updated. When the battery is fully charged, the icon (
= approx. 70%, = approx. 30%) will appear. As soon as the icon for "low battery" is displayed, the display changes to "LOW BATTERY" and
shows approximately every 5 seconds. Replace the batteries immediately.
11