ThiEYE T5e external microphone stereo recording

ggeorgg

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Hi,

my goal was to record in stereo from external microphone, but i am somehow stuck:

I have a 2,5 mm TRRS jack and i found the following pinout:

---cable--:S|R1|R2|T

S: +3V
R1: Detect external Mic when pulled to +3V
R2: Right Mic (at about 2,414 V open circuit when R1 is pulled to +3V)
T: Left Mic (at about 2,414 V open circuit when R1 is pulled to +3V)

Connecting the right mic works, but the recorded audio is on both the left and right track while the left mic is not recorded at all
However T (right) and R2 (left) are not shortend, there is about 4,2kOhm of resistance

Is this a defect, or does anyone else has this issue ?

Model: ThiEYE T5e
Serial: FT501709xxxx
Version: TI/UN7-171114-V5.1

regards
Georg
 

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