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HelicopterRadio - Spektrum DSM › JR DSM 9 channel Module
03-13-2016 09:44 AM  21 months agoPost 1
flycatch

rrApprentice

Barstow, California

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I recently purchased this module to be used in a JR 10X transmitter. I have a problem and hopefully others may have experienced the same thing.
I followed the instructions that came with the module binding it to a Spektrum AR7000 receiver. When I power off the receiver and transmitter and than power them back on it failed to bind on numerous occasions. The receiver never had a problem binding to a Spektrum DXi6 transmitter. The led light on the receiver is solid telling me that the bind did work but that is not the case. The servos are getting voltage but not a signal.
Any comments would be appreciated before I return it to the vendor.

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03-14-2016 06:27 AM  21 months agoPost 2
aerocal

rrApprentice

Central California

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So your saying that you got it to Bind originally but on later attempts to repower it is refusing to Connect?
Are the leds solid on both Main and Remote Rx?
You say "numerous occasions".Does this mean that the problem is random/intermittent? If led on Main is solid and your having
Failure to Connect issues it generally indicates a problem with the Remote or more often the connector cable. The main must be hearing a reliable signal from the Remote before it will allow a Connection.

Can I ask which vendor you got the module from? Are they an authorized HH dealer? If not possibly it is a counterfeit module.

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03-14-2016 08:08 AM  21 months agoPost 3
flycatch

rrApprentice

Barstow, California

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I contacted Spektrum support and was told it would not operate properly without the satellite receiver. They were surprised that it bound without it attached. So I ordered one today and will try again once I receive it.

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03-14-2016 10:05 AM  21 months agoPost 4
aerocal

rrApprentice

Central California

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That is correct. It will Bind but it will not Connect. An AR7000 requires a DSM2 remote. A DSMX remote will not work with a DSM2 Rx.

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03-16-2016 03:56 AM  21 months agoPost 5
flycatch

rrApprentice

Barstow, California

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For the few that responded to my problem I found the answer. In order for the AR7000 or AR9020 to bind properly you most be separated from the receiver by at least 2 meters. This is a standard rule when going through the bind process. This rule can vary with different receivers. The AR7000 will bind properly at 2 feet but the AR9020 does not. I also found out that you can bind a AR7000 without a satellite receiver attached but you can't with the AR9020. Now with all of that said I thought 2.4ghz technology was bullet proof and the days of "swapping" a receiver was a thing of the past. I'm a JR guy and have used nothing but SPCM as the mode of transmission and never had a problem either in fixed or rotary wing models.

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03-16-2016 07:28 AM  21 months agoPost 6
aerocal

rrApprentice

Central California

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I dont think your information is completely accurate.
First.Remember that a Bind and a Connection are 2 different things. Bind is when the Rx stores the information from the Tx so it will only Connect to that Tx and the specific memory position
it is on during Bind.
After the Bind process is complete the Rx continues to the Connect stage.Generally if a Rx is capable of using a Remote Rx it needs to have one installed and functioning before a Connection is allowed. On some Rxs like the 9020 that are capable of up to 3 remotes it requires a minimum of 2 before a connection is allowed.
Also a DSM2 Rx requires DSM2 remote(s). A DSMX Rx needs DSMX remote(s).
After the Bind process and initial Connection anytime a Rx is simply repowered it just Connects. The Bind is a one time deal.

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03-16-2016 07:34 PM  21 months agoPost 7
2LTime

rrKey Veteran

Walworth,NY

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Also a DSM2 Rx requires DSM2 remote(s). A DSMX Rx needs DSMX remote(s).
Incorrect.

I have DSM2 transmission and use both DSM2 and DSMX receivers. Accordingto the manuals, a DSMX receiver will revert to DSM2 if bound to a DSM2 transmitter.

From the manual
Is DSMX Compatible with DSM2?
Yes. DSMX is fully compatible with all DSM2 hardware. In fact, many pilots may
find the DSM2 equipment they have now is all they will ever need. Even if a new
DSMX transmitter eventually comes along that they really want, all the DSM2
receivers they have now will work with it.
It is important to note, however, that while DSMX is compatible with DSM2, the
only way to experience the full benefits of DSMX in a busy 2.4 environment is by
pairing a DSMX transmitter with a DSMX receiver.
Jeff

If you can't learn to do it well, learn to enjoy doing it badly.

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03-17-2016 02:46 AM  21 months agoPost 8
aerocal

rrApprentice

Central California

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Not incorrect. I now exactly what Im talking about. Do not Mix/Match remote and main Rx types. A DSMX Rx can and will revert and operate in DSM2 mode if forced to do so or Tx is not DSMX capable. You do not want to use a DSM2 remote on a DSMX main Rx even if it will only be operating in DSM2 mode.While it is possible you can get this combination to Connect and appear to be functioning correctly it may not be and you risk a failure.
Do Not Mix/Match main and remote Rx types!!!

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03-17-2016 02:46 PM  21 months agoPost 9
Four Stroker

rrElite Veteran

Atlanta

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You guys should pay attention to aerocal !!!

I have seen many unexplained crashes of RX/Sat combinations. Even with different "generations" of DSM2. This is a s/w configuration management problem. Better to buy the RX and Sats from the same lot. S/W is not backward compatible to the beginning of time.

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03-18-2016 05:52 AM  21 months agoPost 10
aerocal

rrApprentice

Central California

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Yes it is always best to keep the remotes that came with a specific main as a group but not absolutely necessary.

One other thing that is worth noting again. When the DX8G1 was originally released it was shipped with AR8000 Rxs.These Rxs were labeled as DSM2 as were the remotes that accompanied them.DSMX had yet to be announced but these AR8000 Rxs and their remotes were in fact DSMX.All AR8000 Rxs are DSMX even if they are labeled DSM2.
There may not be that many out there but it is possible to run into a remote that has a DSM2 case but is in fact a DSMX remote if it was shipped with an original AR8000.
The only way to tell is to look at the backside.Inside the case there will be a lot number sticker.It will have an X as part of the number.This says it is a DSMX remote in a DSM2 case.
I have seen a case where one of these was used as a DSM2 remote with an AR7000 and was causing fits.

For the most part the remote software has not changed and there is only one version for DSM2 and one for DSMX.
The only exception is if you possibly have a DSM2 remote or AR7000 that is really old and still has pre "Quick Connect" software in it.If there is a question the way to tell is that it will not have reboot detection and will not slowblink if rebooted without powercycling the Tx.

As long as you remember to use a DSM2 remote with a DSM2 main and DSMX with DSMX you will be ok.

The #1 cause of all Rx/signal problems is an intermittent remote connector cable issue.If you have a system that is stubborn to Connect many will say that it has lost its Bind.
99 times out of 100 it is a cable issue.Rebinding may appear to fix it but any failure to Connect is generally a warning sign to check your connector(s).
Many loss of control situations likely trace back to a cable connection being lost inflight and the remaining single functioning antenna getting shadowed. I tend to think this happens more often than most will admit especially if you dont have any FLog data to confirm.

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HelicopterRadio - Spektrum DSM › JR DSM 9 channel Module
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