Hytera MD652, Service Manual

Page: 145 / 207

VHF1 (136
‐
174 MHz)
Interface Definition
37
7. Interface Definition
7.1
10-pin Aviation Interface
The 10-pin aviation interface on the front panel is used for audio accessories or data cable connection.
The definition of each pin is described as below.
Pin No. Name Function
1 ACCIO_0 Digital input
2 PTT Digital input
3 INT_SPKN Analog output
4 USB_D- USB data cable
5 GND Earth wire
6 5VD_CB Power supply
7 INT_MIC Analog input
8 USB_D+ USB data cable
9 HOOK Hook signal input
10 INT_SPKP Analog output
7.2
DB26 Accessory Interface
DB26 accessory interface is also the 26-pin further development interface on the rear panel, which is
mainly used for accessory devices connection or compatibility with other interfaces. Users can further
develop the radio via this interface. The figure and definition of each pin is described as below.