User's Manual

MTH400 User Manual
Rev.01
6
<AUDIO> menu
This menu can be entered by scrolling selector or using quick gain setup button (gain).
The first AUDIO menu allows to set the AF Gain from
-20dB to 40dB. To help proper audio gain setting, an
audio bar is supplied (with peak hold bar)  TRY TO
SETUP TO HAVE A MAX PEAK HOLD BAR CLOSE TO -
6dB.
The second <AUDIO> menu allows to set: - audio
phase (0° or 180°)
-Noise reduction (ENR-Wisy noise optimized or ENC-
Wisy hi fidelity/voice optimized)
- High Pass filter (Flat, 60, 80, 120, 170, 250, 400 Hz)
NOTE: while in this menu display is not automatically turned off.
<RF/BATTERY> menu
This menu can be entered by scrolling selector.
RF power can be setup to High (50 mW ERP) or Low
(10 mW ERP).
Battery type can be setup in Alkaline or NiMH.
<PTT/LED> menu
This menu can be entered by scrolling selector.
Power switch green LED brightness can be setup →
Led light (from 0 to 16).
4 different PTT mode can be selected: Disable,
Normal, Muting, No Data.
Led Mode setting define when the LED on the power
switch (see Fig. 3) have to become RED:
- None: never,
- ModPeak: when audio get close to saturation)
- PTT: when the PTT button is pushed
<IRDA> menu
This menu can be entered by scrolling selector.
By this menu, MIC can be connected to IRDA for
setup or firmware upgrades.
NOTE: while in this menu display is not automatically turned off.
<LOCK> menu
This menu can be entered by scrolling selector.
Long pressing (2 sec.) selector button (click) it locks
MTH400 in transmission mode. To unlock, long
pressing (2 sec.) selector button again.