[NSRCA-discussion] GWS Servo/Transmitter Tester/Tachometer

[James Oddino]

Most RC systems send a pulse to the receiver every 20 milliseconds or so.  The new Futaba HS high speed systems put out a pulse every 7 milliseconds.  Many devices like analog servos won't work with this higher frame rate.  So someone needs to test it on an HS receiver.

I believe this device decodes the PPM pulse train coming from the trainer port on the transmitter and lets you look at each of up to 9 channels.

Jim

On Dec 12, 2009, at 8:44 AM, Ron Van Putte wrote:

> If I understand your question, the answer is "yes".
> 
> It also is supposed to measure the pulse width out of the transmitter for up to nine channels, but it requires an optional "transmitter signal cord", which appears to have a servo connector on one end and a stereo headphone connector on the other end.  No clue as to how it's wired.  I sent a query to the MT-1 thread on RC Groups, asking which transmitter signal cord is used with which transmitters and am awaiting a response.
> 
> Ron
> 
> On Dec 11, 2009, at 12:21 PM, James Oddino wrote:
> 
>> Does it measure pulse width out of the newer Futaba high speed receivers?  I noticed my Jeti box didn't.  The Schulze ESC didn't like it either.  Can't take the high frame rate I guess.
>> 
>> Jim
>> 
>> 
>> On Dec 10, 2009, at 5:31 PM, Ron Van Putte wrote:
>> 
>>> I don't know how many are interested in a combination servo/transmitter tester/tachometer, but I've been checking out a GWS Multiple Tester lately and am very impressed with the number of features and the accuracy of the unit.  You can look at it here:  http://www.gwsus.com/english/product/auxcircuit/mt-01.htm
>>> It has a number of ways to check out servos.  You can put it in a manual mode, which enables you to increment servo motion in 10 ms steps, so you can take it from 1500 ms (center) all the way to either 1000 ms or 2000 ms (50 steps either side of center).  You can also put it in an automatic mode and it will swing back and forth from 1000 ms to 2000 ms continuously.  In another mode, you can start at center, take it to 1000 or 2000 ms and back again to check centering of the servo.
>>> It also has a tachometer capability, which I haven't used and another mode which I also haven't used yet that enables you to look at the transmitter signal by looking at what the receiver is seeing.
>>> 
>>> I got my unit from BP Hobbies, where the standard price is listed at $25!
>>> 
>>> Yes, it does work with digital servos, at least the Futaba and Bluebird digital servos I've tried.
>>> 
>>> Ron Van Putte
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>> 
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