Expert Electronics MB1 - Connectors Pin-Out; Mic1; Mic2

27
MB1 User Manual
© 2016 Expert Electronics
CONNECTIONS
2.6 Connectors pin-out
2.6.1 MIC1
Out #
Output name
Description
Note
1
MIC
Mic signal input
Input
2
+2V
DC 2V supply into the MIC
Output
3
GND
Ground
--
2.6.2
MIC2
Out #
Output name
Description
Note
1
NC
Do not connect
--
2
GND
Ground
--
3
PTT
РТТ signal input
Connection of the PTT to the GND will turn the
transceiver to the TX mode
Input
4
MIC
Mic signal input
Input
5
MIC_GND
MIC case
--
6
+5V
DC 5V output with maximum current up to 20 mA
Output
7
NC
Do not connect
--
8
NC
Do not connect
--