LC29HDA EVB: Can't get any sattelites signals

IoT Modules GNSS Module
1

Hello Quectel Support Team,

I am currently using the EVB board of LC29HDA and I am able to receive NMEA messages. However, I am not receiving any satellite signals.
I’ve tested in clear sky view and waited for long time.
You can check in the picture the NMEA messaegs I receive and the firmware version of the module

image
image810×770 51 KB

BR,
Yahya

2

Hi Yahya,

Could you take a picture of your EVB setup?

Thank you,
June

3

EVB_Board
EVB_Board1151×2041 303 KB

I measured the supply on the SMA connecter and it shows 166mv
should I do any other required action?

4

Hi Yahya,

I have the same setup and firmware as you and was able to get a fix. Could you please double-check that your antenna is securely connected? If you have a spare antenna, try swapping it in. Also, make sure to test under open-sky conditions and wait for a few minutes longer.

Thank you,
June

5

Hi @Yahya , @June_Zhu ,

Confirming the issue. GNSS_MODULE_EVB_V1_3 EVB, LC29_TE_A module on LC29HDA with same firmware - correctly communicates with QGNSS v.2.0 over NMEA, but does not show any satellites.
Same setup with LC29HBS-based module - works as expected, so it is not a problem with EVB or antenna. All jumpers are in the factory position (same as on the photo).

Please advise.

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6

Hi Dmitry_K，

What do you mean by correctly communicates with QGNSS v.2.0 over NMEA? Did you see NMEA sentences? What baud rate did you use?

Thank you,
June

7

Hi @June_Zhu,

I use 115200 baud rate and can send NMEA commands and see responses and notifications - exactly as it works to Yahya above.
As a part of my test - I am sending PAIR062 to make sure each kind of the status message is enabled - but in GSA I never get any satellites.

Thanks,
Dmitry

1 Like