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
