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A Main Hobbies . Boca Bearings . Modefo's RC Helicopters

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Radio - Servo - Gyro - Gov - Batt > TX/RX eCCPM Latency Test Results
 
 
JKos
Elite Veteran
Location: Town of California in the state of Maryland

> May be it would be interesting to test eccpm latency of TM14+R608...

I would love to. The 608 was not available when I did the other TM14 testing. If the 608 uses multi mode (which I believe it does), then one bad thing is that a given channel will only be updated every two out of three frames.

- John

Logo 14 -- Logo 10
04-15-2008 06:09 PM
 
 
tgo
Senior Heliman
Location: HK

Yes, the 608 uses Multi mode !
04-16-2008 02:21 AM
 
 
tgo
Senior Heliman
Location: HK

Hi JKOS,
When you test the JR12X, is the servo sync just apply to 1,2&6 only ?

Thanks
05-01-2008 04:29 PM
 
 
JKos
Elite Veteran
Location: Town of California in the state of Maryland

ServoSync applies to various groups of channels depending on what you are using the radio for. For helis we care about 1, 2, and 6 since those are the three channels used for CCPM swashes.

- John

Logo 14 -- Logo 10
05-02-2008 03:05 AM
 
 
tgo
Senior Heliman
Location: HK

As the 12X also has plane programs, how about big planes with multi flaps and ailreons?

Quote 
ServoSync applies to various groups of channels depending on what you are using the radio for. For helis we care about 1, 2, and 6 since those are the three channels used for CCPM swashes.
05-02-2008 06:18 AM
 
 
Chuckie
Key Veteran
Location: Crofton Maryland, MHA member

Quote 
If the 608 uses multi mode (which I believe it does), then one bad thing is that a given channel will only be updated every two out of three frames.

Why is this John?

Charles

Please stand by for faster service!
05-05-2008 04:54 PM
 
 
hootowl
Elite Veteran
Location: Garnet Valley, Pa.

Quote 
For helis we care about 1, 2, and 6 since those are the three channels used for CCPM swashes.

Futaba FASST changes that to 1,2,3. It's radio dependent not heli dependent.

I want to die like my grandfather - peacefully in his sleep. Not screaming like the rest in the car.
05-05-2008 05:08 PM
HOMEPAGE  
 
 
JKos
Elite Veteran
Location: Town of California in the state of Maryland

tgo,
> As the 12X also has plane programs, how about big planes with multi
> flaps and ailreons?

I'm not very familiar with large plane servo layout or programming. But, all 12 channels are 2048, all 12 channels are updated every single frame, and the radio has built in programming for servo matching; so, it really should work just fine. After all, that's the number one market for this radio.

hoot,
> Futaba FASST changes that to 1,2,3. It's radio dependent not heli
> dependent.

tgo was referring specifically to the 12X. FASST doesn't change it to 1, 2, and 3 on all radios so your second statement is by all means correct.

Chuckie,
That's just the way Futaba choose to do it.

- John

Logo 14 -- Logo 10
05-05-2008 05:30 PM
 
 
tgo
Senior Heliman
Location: HK

Hi John,
I understand that 12X has all channels updated in one single frame, but can you help to clarify this...

DX7 has servo sync on 1,2,6 only, how about 12x ? all 12 channels syncs and output at one time?

Thanks
05-06-2008 03:44 AM
 
 
JKos
Elite Veteran
Location: Town of California in the state of Maryland

tgo,
One page back in a post I made at 04:50 PM on 03-25-2008 shows the channel output scheme. Now this is in heli mode. Is it different for plane mode? I don't know.

> DX7 has servo sync on 1,2,6 only ... output at one time?

The DX7 has servo sync on more than just 1, 2, and 6. If you really look at the output scheme, it covers more than just heli setups. ServoSync does not imply simultaneous output. It really just means either simultaneous or next to each other as well as implying that all applicable channels get updated each frame (but updating all channels every frame is true for Spektrum in general).

- John

Logo 14 -- Logo 10
05-06-2008 04:44 AM
 
 
Chuckie
Key Veteran
Location: Crofton Maryland, MHA member

I mean technically what is going on? Does it have to do with 14ch vs 8 ch conversion, because the 14mz has to process all 14 channels a lot of aux data is sent to keep the same total timing?

I just purchased the R608 but have not flown it yet. Should I have just purchased the 14ch instead? I should be able to exchange it at my LHS.

Charles

Please stand by for faster service!
05-06-2008 08:07 PM
 
 
AirWolfRC
Elite Veteran
Location: 42½ N, 83½ W

JKos, here's another one for you,
http://www.acteurope.de/Vergleichenglisch.pdf
05-09-2008 04:10 PM
HOMEPAGE  
 
 
Eco8gator
Key Veteran
Location: Palm Beach Gardens, FL

Now thats what Ive been looking for!

C
05-09-2008 05:40 PM
 
 
rexxigpilot
Senior Heliman
Location: florida

Wow, that S3D stuff looks atrocious. What's with the twin antennae on the transmitter that look like ears? In Florida and California it would be called "Mickey Mouse."
05-09-2008 05:47 PM
 
 
44 pages [ <<    <     42      43     ( 44 )    >    >> ]62860 viewsPOST REPLY
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Radio - Servo - Gyro - Gov - Batt > TX/RX eCCPM Latency Test Results
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