Operation
Fine Tuning of Received Frequency (RIT)
Operation methods:
1. Long press the main knob to enter the RIT
adjustment interface.
2. Rotate the main knob left or right to adjust the RIT value. The adjustment
range is ±500Hz and relevant information displays on the screen.
♦
After RIT function is used, reset the RIT value to be 0 to avoid affecting the
normal use.
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Line Input and Output
The G90S has an external line input interface. When the G90S is used for data
communication cooperating with a computer or an external modem, the correct
corresponding signal input option shall be selected.
1. Input the external audio signal into the corresponding pin of the ACC port (see
the interface description for the definition of the pin).
2. Enter the second option INPUT of [FUNC+POW] to select: LINE.
3. In the system menu, select: AUX IN VOLUM to set the appropriate input
volume.
Operating method of line output:
In the system menu, select: AUX OUT VOLUM to set the appropriate output
volume.
■
When the digital communication is conducted and the ACC port is used for audio input, it shall be ensured that
the volume of the line input is the
effective level value ≥200mV.
■
Level output from the computer or other modulation equipment to the radio shall be adjusted so that the ALC
value displayed on the screen can range from 30 to 85. i.e. proper signal levels. Excessive high input signal level
may overload the input amplifier, resulting in the modulation signal distortion.
In the system menu, the following two settings are related to the receiving
or transmitting volume setting during the data communication:
5
AUXIN Volum
Line input volume setting
6
AUXOUT Volum
Line output volume setting
♦
During the data communication, the volume of signal input from the computer or other external equipment to
the radio is needed to be adjusted for the "Line input volume". The volume of signal output from the computer or
other external equipment to the radio is needed to be adjusted for the "Line output volume".
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