Contents
Documentation Conventions ...................................................................................................................... 1
1. Packing List .............................................................................................................................................. 2
2. Product Layout ......................................................................................................................................... 3
3. Installation ................................................................................................................................................ 4
3.1 Precautions ........................................................................................................................................... 4
3.2 Tools ..................................................................................................................................................... 4
3.3 Parts ..................................................................................................................................................... 5
3.4 Procedure ............................................................................................................................................. 6
4. Basic Operations ...................................................................................................................................... 7
4.1 Turn On or Off the HM652 ................................................................................................................... 7
4.2 Adjust the Volume ................................................................................................................................ 7
4.3 Switch Between Day and Night Modes ................................................................................................ 7
4.4 Set the Backlight to Always On ............................................................................................................ 7
4.5 Lock or Unlock the Key ........................................................................................................................ 7
4.6 Select the Zone .................................................................................................................................... 8
4.7 Select the Channel ............................................................................................................................... 8
5. Status Indications .................................................................................................................................... 9
5.1 LCD Icons ............................................................................................................................................. 9
5.2 LED Indicator ...................................................................................................................................... 10
6. Call Services ........................................................................................................................................... 11
6.1 Calls on Digital Channel ..................................................................................................................... 11
6.1.1 Make a Call .............................................................................................................................. 11
6.1.2 Answer a Call ........................................................................................................................... 11
6.1.3 End a Call ................................................................................................................................. 11
6.2 Calls on Analog Channels .................................................................................................................. 12
6.2.1 Make a Call Without Signaling ................................................................................................. 12
6.2.2 Make a Call with Signaling ....................................................................................................... 12
7. Basic Settings......................................................................................................................................... 13
7.1 Power Level ........................................................................................................................................ 13
7.2 Audio ................................................................................................................................................... 13
7.2.1 Microphone and Speaker ......................................................................................................... 13
7.2.2 Mic AGC ................................................................................................................................... 14
7.2.3 AI-based Noise Cancellation .................................................................................................... 14
7.3 USB Path ............................................................................................................................................ 14
7.4 Location .............................................................................................................................................. 14
7.4.1 Voice with Location .................................................................................................................. 15
7.4.2 GPS Report .............................................................................................................................. 15
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