characters at the cursor position. Pressing the SELECT button will move the cursor along one position. Pressing the SELECT button on the last character in
the name will return you to the normal display. It will be necessary to change each of the eight character locations in turn. If you miss the character you want,
simply scroll round until it comes back again.
•Selecting DISPLAY NAME?:
This allows you to configure whether or not the user name is displayed in the normal display. Pressing the ∆∆ button will toggle this setting on and off. Pressing
the SELECT button will return you to the normal display.
•Setting the Mute Level:
The mute level can be adjusted if the receiver is picking up unwanted radio signals (due to intermodulation and other FM signals). In order to make this
adjustment, the transmitter must be switched off. The receiver should now be muted. If it is not, then slowly adjust the MUTE LEVEL control until all unwanted
signals are muted. Due to the receiver’s noise searching circuitry, no noise should be present at the audio output regardless of the mute setting. Once you
have done this, switch the transmitter back on and check its operation. If desired, the mute level can be viewed in a numerical format on by selecting the
appropriate menu option as described above. Setting the mute level too high will reduce the range of your system.
•Optimising the Gain of your system:
In order to achieve the best possible audio performance from your radio system, it is worth spending a few minutes setting the optimum gain level.
First adjust the gain of your transmitter, as described in the appropriate section. The optimum setting for this will be found by first adjusting the transmitter
gain so that the audio peak LED on the receiver just illuminates for the loudest signal that is likely to be transmitted. The gain should then be decreased
slightly so that the peak LED never lights in normal operation. If the peak LED is lit, then distortion is likely. The optimum setting will vary according to who is
using the microphone and how close the microphone is placed to the mouth. For guitar systems, different instruments will require a different setting. The VU
meter can be used as a guide.
Once the transmitter gain is optimised, it is necessary to match the receiver’s output gain to your mixing desk or PA system. If using the jack output, adjust the
GAIN control to give the optimum level for your system. Adjusting this too high may cause distortion. If you are using the XLR output then you must adjust the
gain on your mixer or PA system as the output level is fixed.
S4.5 Handheld Transmitters:
•Setting Up:
Screw the external helical antenna into the antenna connector on the base of the microphone. For maximum range and performance it is important not to
place your hand around this antenna whilst the microphone is in operation.
Turn the microphone’s collar round to the left and gently slide down the body shell to reveal the battery compartment. Insert a 9v (MN1604) battery observing
the correct polarity. Close the body shell and turn the collar back to lock it in place.
Switch on the microphone using the switch on its base. The LED will light up if the battery is good. Note that the LED will extinguish when the battery needs
replacing. The LCD display will also indicate the current channel.
•Changing the Transmitting Channel:
Sliding open the body of the microphone as described above will not only reveal the battery compartment, but also two small push button switches. These are
located on the opposite side of the microphone to the battery compartment, adjacent to the LCD.
Whilst the microphone is switched on, press and hold the switch nearest to the base of the microphone until FrEq is displayed on the LCD. Releasing the
switch at this stage will advance the transmitting frequency to the next frequency. Continuing to hold down the switch will scroll through the available
frequencies, and whatever frequency is displayed when the switch is released will be chosen as the transmitting frequency. This setting is stored in memory
within the microphone and will be retained even when the microphone is switched off.
•Changing the Audio Gain:
Locate the two push button switches as described above and press them both down together. After a short delay, GAIn will be displayed on the LCD along
with a number from 0 to 9. This number is the current gain setting. Continuing to hold down only the right hand switch (nearest the LCD) will increase the gain
up to the maximum of 9, whilst holding down only the left hand switch will decrease the gain down to the minimum of 0. When neither switch has been
pressed for a period of time, the display will revert to showing the transmitting frequency, and the new gain will have been selected and stored. Refer to the
receiver instructions for details on how to optimise the gain of your system to best suit the application for which it is to be used. Normally setting 9 (maximum)
will be best for low SPL level microphone applications such as interviews and conferences and gain 0 (minimum) is best for high SPL level applications such
as stage use with high vocals. The gain is initially set to 5 or 6 in the factory.
