T8SG telemetry monitor: display inconsistencies

  • Rolf
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03 Mar 2020 22:13 - 03 Mar 2020 22:25 #75987 by Rolf
I am running 2 helis with Brain 2 and Spectrum Spm4649t via dsmx/srlx-protocol with telemetry.
The telemetry monitor looks different to the manual and has an overprint of text and number-fields.
The telemetry contains an additional field Misd; the meaning of this field in d-units is not specified.
I assume, that the order of displayed fades-numbers differs from other Devo-transmitters.
I assume that the calculation of the fade-B-number is far too high (in both helis).

Walkera Devo 6s, 7e and 10, Jumper T8SG v2+ lcd, Brain 2, Spektrum satellites and SPM4649T
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Last edit: 03 Mar 2020 22:25 by Rolf.

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04 Mar 2020 10:54 #75994 by vlad_vy
Fixed alignment at first 2 lines. I will look what I can do with third line. See next nightly build.

Fades, Frame Loss, Holds is not calculated, data directly displayed.

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04 Mar 2020 11:15 #75995 by Rolf
Thanks for the answer. Do you know the meaning of the field Misd?

Walkera Devo 6s, 7e and 10, Jumper T8SG v2+ lcd, Brain 2, Spektrum satellites and SPM4649T

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04 Mar 2020 14:29 #75997 by vlad_vy
For DSM telemetry "Misc" used for RSSI.

I revert Telemetry monitor page to default layout, but you can use RSSI value at Main page boxes and telemetry alerts.

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05 Mar 2020 18:44 #76017 by Rolf
I think the values for Fades A and Fades R have to be swapped. Is that true?
The Rssi-value is 215d or 214d on the telemetry screen with RX an to next to each other although the FBL-system Brain2 is showing the -40 dbm. What does 215d represent?

Walkera Devo 6s, 7e and 10, Jumper T8SG v2+ lcd, Brain 2, Spektrum satellites and SPM4649T

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06 Mar 2020 05:27 - 07 Mar 2020 07:01 #76023 by vlad_vy
I don't think Fades A and Fades R have to be swapped.

I think RSSI value parsing has error, it has to be 8bit signed value: 215dBm -> -41dBm

INT8 dBm_A  // Average signal for A antenna in dBm
Last edit: 07 Mar 2020 07:01 by vlad_vy.

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06 Mar 2020 07:06 - 06 Mar 2020 07:35 #76026 by vlad_vy
Fixed, see next nightly build (2020-03-06).
Last edit: 06 Mar 2020 07:35 by vlad_vy.

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06 Mar 2020 12:03 - 06 Mar 2020 12:04 #76029 by Rolf
I confirm that in your mentioned nightly build
1. the telemetry Monitor is standard
2. meaningful negative rssi-values are calculated and displayed in dBm units.
But I am not able to set meaningful negative limits in the telemetry alarm panels, because the appropriate right box is limited to nonnegative dBm integers.

Walkera Devo 6s, 7e and 10, Jumper T8SG v2+ lcd, Brain 2, Spektrum satellites and SPM4649T
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Last edit: 06 Mar 2020 12:04 by Rolf.

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06 Mar 2020 12:47 - 07 Mar 2020 17:52 #76031 by vlad_vy
Fixed, see next nightly build (2020-03-07).

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Last edit: 07 Mar 2020 17:52 by vlad_vy.

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15 Mar 2020 16:22 - 15 Mar 2020 16:23 #76071 by Rolf
I confirm that it is now (nighty from 2020-03-15) possible to set negative RSSI-range-values.
Thank you.

Walkera Devo 6s, 7e and 10, Jumper T8SG v2+ lcd, Brain 2, Spektrum satellites and SPM4649T
Last edit: 15 Mar 2020 16:23 by Rolf.

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29 Mar 2020 02:48 #76123 by krzysiaczek99
Replied by krzysiaczek99 on topic T8SG telemetry monitor: display inconsistencies
I'm running Jumper with this image

deviation-t8sg_v2_plus-v5.0.0-e801244

when running FlySKy AFHDS-2 protocol with IA6C receiver (and IA6B also) I found out that e.g. when receiver is disconnected, display on jumper is not refreshed i.e show last values of voltage and RSSI not 0. FlySky I6 transmitter shows OK ie.0 and can make an alarm. I also found out that RSSI shows strange values. When the binding is OK it shows 60d (40-44DB original FlySky transmitter) but when binding is not OK (4DB FlySky) Jumper shows like 90DB. Any idea what it can be ??? Why sometimes binding is not OK ??? Seems that due to this its not possible to get alarm when voltage or RSSI drops.

Krzysztof

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