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THEMA: CB200 & Assist receivers bad connection?

CB200 & Assist receivers bad connection? 13 Okt 2019 15:00 #1

  • hugom
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I had a crash this summer with an electric powered aircraft equipped with a CB200, a REX6A and RSat: while performing rolls, the aircraft continued to roll when I decided to put the wings level. The failsafe did not work either (motor still running). I spent quite a lot of time trying to find the reason (unfortunately, the log was not active) and I couldn't find any fault - except that sometimes, when I powered the aircraft ON, I had a "Signal Loss" warning.

HOWEVER, I have another aircraft not yet complete with the same configuration and new equipment (so it never flew).
Here is the configuration:
www.jetimodel.com/files/photo/assist-zapojeni-2.png
I had the same problem and after numerous tests, I reset all the equipment to factory default and downloaded the lastest firmwares.
CB200 V1.31
REX6A V1.12
RSat2 V3.25
The problem remained: I often have a warning at power on (this time "Weak Signal" with the V1.31 version of the CB200).
Also, sometimes, the REX6A does not "Arm" although it works. Instead of hearing "Initialized" and "Armed", I only hear "Initialized."

I only have such problems when a CB200 and a REX6A are used together.
A classic receiver with a CB200 is OK.
A REX6A alone is OK.

So, there is a communication problem between the CB200 and Assist receivers that can probably lead to a crash.

Or, there is something wrong with my setup (see the screenshots).

Best regards,
Hugo

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CB200 & Assist receivers bad connection? 13 Okt 2019 15:14 #2

  • PW
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Hi Hugo,

I would suggest to send an email to Jeti/cz ; so they could have a look on it.


Regards
PW
Rechtsbeistand u.a. bei "Modellflugproblemen"etc. : Rechtsanwälte Wessels & Partner, Tel.: 02362/27065

PW Modellbautechnik ( Jeti Kombiangebote, Beratung/Einstellservice etc.)

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CB200 & Assist receivers bad connection? 16 Okt 2019 14:25 #3

  • PW
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Hi,

which TX software ?

The warnings may appear (it depends on the settings in the Double Path menu).
"Alarm at" = Loss of any Rx or loss of both Rx.

Regards
PW
Rechtsbeistand u.a. bei "Modellflugproblemen"etc. : Rechtsanwälte Wessels & Partner, Tel.: 02362/27065

PW Modellbautechnik ( Jeti Kombiangebote, Beratung/Einstellservice etc.)

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CB200 & Assist receivers bad connection? 04 Dez 2019 09:16 #4

  • HSC
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Hello ! I em interested if this problem get any conclusion?
I em interested because I have total the same setup ready for my next bild...
Thanx Regards

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CB200 & Assist receivers bad connection? 04 Dez 2019 19:28 #5

  • wfield0455
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The wiring diagram in the link provided doesn't make sense to me. It appears that you are trying to conect the Rsat as a secondary receiver to the REX6A via EXBus and also connect the Rstat to the CB200 via PPM. I would suggest one or the other but NOT both. Personally, since the REX6A should not accept a secondary receiver directly connected via EX Bus that is what I would use. Doing so would provide a redundant receiver AND it would continue to provide a stabilized EX Bus signal from the REX6A to the CB200 should the secondary Rsat need to be used due to prolonged poor reception at the primary receiver (REX6A).

Also, in your setup, if you actually do have the Rsat connected to the REX6A via Ex Bus, the CB200 will never actually switch to using the Rx2 input since if either the REX6A or the Rsat are operational then the REX6a will always send a valid signal on RX1.

Any issues causing you to not get the ARMED announcement are almost certainly in the Assist itself and I don't believe it has anything to do with it being connected to a CB200. Personally if not consistently getting both ARMED and INITIALIZED messages the first thing I would do is remove the Assist from the airplane perform the sensor calibration process and see if that clears up the problem.

While it isn't a CB200, I'm currently using a REX7A connected to XPS24 via ExBus and it works perfectly.

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