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HomeRC & PowerAircraftHelicopterRadio - Hitec Aurora › Hitec 5065 Pulse Width?
04-26-2013 04:34 PM  5 years agoPost 1
RCHSF

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NC

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Servo Database says 900-2100us
Servo City says 1500-1900us
What gives?
And what hz are they.

Also I'm looking for the hz for my JR 3500G
Pulse Rate shows to be 1520us. I'm sure thats right.

I'm trying to setup a ZYX-s and I need to know what rate/hz to set these at.

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04-26-2013 04:37 PM  5 years agoPost 2
bluewave1016

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SunnyPlace, Orange County

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If you go to BeastX website and look at their servo table you will find it.

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04-26-2013 05:20 PM  5 years agoPost 3
RCHSF

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NC

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Thanks came across that before. But it's showing two differant hz for swash vs tail confused me. Still don't understand that.

Acording to their site.

My

5065's are 1520us (200hz) Swash
3500G is also 1520 (270hz)Tail

But I guess the hz rates are specific to beastx.

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04-30-2013 01:41 AM  5 years agoPost 4
dkshema

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Cedar Rapids, IA

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Pulse width is the nominal control pulse width out of your receiver that will send the servo to neutral position. A standard servo these days is spec'ed with a neutral pulse width of 1520 microseconds, or 1.52 milliseconds. If you call that neutral pulse width 1500 microseconds nominal, the standard pulse width varies from 1000 microseconds with the control stick at one extreme of movement, to 2000 microseconds with the control stick at the opposite extreme.

Some servos designed for use on tail rotors with certain gyros use a neutral pulse width of 760 microseconds instead of the 1520 value. These servos, if plugged into a standard servo port will drive to one end, stall, and most likely be damaged before you figure out what went wrong.

Frame rate, measured in Hz (cycles per second) is the maximum rate at which the servo can receive new position updates. The typical frame rate out of most receivers today is 50 - 60 Hz. A new position pulse squirts at 16 to 20 times per second. Analog servos cannot handle higher frame rates due to how they process the incoming pulses. If you send them new updates too fast, the servo amplifier usually dies. Digital servos, due to their design, can accept new position updates at a much faster rate, typically 270 Hz or faster.

Since people are always striving to have screaming fast tail rotor servos, many manufacturers will market tail rotor servos having the 760 microsecond pulse width (and reduced overall travel values). The higher frame rate (270, 330 Hz) is marketed to give you "superior holding torque".

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

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05-13-2013 10:21 PM  5 years agoPost 5
Andy from Sandy

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Bedfordshire, UK

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There is also a 560Hz frame rate for tail servos in some gyros/fbl units.

The Futaba receivers have a setting to use a higher frame rate than 50Hz if using all digital servos on the first 6 channels.

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