Operating Manual 6175.4760.02 – 01 3.7
M3SR Series 4100 Operating Concept
Radio Settings
The following settings can be made at the front panel:
• Adjusting the volume with the volume controls for the loudspeaker and headset
• Switching the radio on or off with the ON/OFF button (see sect. 2.6 Switching the Radio
On and sect. 2.7 Switching the Radio Off)
• Switchover between internal or external loudspeaker with the INT/EXT button (the status
is indicated by the control unit loudspeaker symbol)
• Initiating a quick erase, erasing the database with waveform and configuration parame-
ters
The indicators at the front panel show the following radio status:
• AC/DC LED or BATT LED shows that power is available.
• TX LED shows that the radio is transmitting (to monitor the output power, please see
power bar graph on the control unit instead)
• GO LED shows that the radio is fully operative.
• RX LED shows that the receiver has a signal above its configured squelch level. In op-
eration without squelch, this LED is always on, indicating that audio signals are available.
Quick Erase
When the ERASE button is actuated, all settings (such as special waveform configuration,
keysets, hopsets, scan ALE scan groups, modem settings, channels) are cleared.
The radio enters Preset Page 0, fixed frequency operation with default settings, except the
default setting on Preset Page 0 (fixed frequency operation).
1. Open protective flap.
2. Press ERASE button for 1 s.
The safest way to erase sensitive data is to press the ERASE button for at least 1 s.
The data will be erased after 100 ms.
The ERASE button is functioning even if the radio is not powered.
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