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'[OT] Tokin and MuRata Gyros'
2000\02\22@082135 by Sean Breheny

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Hi All,

I am trying to wrap up the design of a test board using a MuRata ENC-03J
rate gyro. I am trying to extract as much accuracy from the gyro as
possible (it will be in a temperature controlled environment). One piece of
information that I have not been able to find on the datasheets is what
exactly the function of the Vref pin is.

Is Vref simply a constant DC voltage output provided as a convenience for
systems without an external reference OR is it preferable to read the
output of the gyro differentially between Vref and Vout?

Will there be reduced accuracy if I try to just read the output between GND
and Vout? I realize that the offset voltage will be higher, but even with
respect to Vref it can be as much as +/- 500mV so we are going to be
calibrating it out anyway (we need DC accuracy).

The title of this message asks about Tokin gyros, too, because we might
consider using the Tokin CG-16D gyro.

One last question ;-) MuRata's gyros have the restriction that two of the
same model (A version or B version) cannot reside on the same PCB because
of acoustical coupling. Do the Tokin CG-16D's have this restriction,too? I
can't seem to get an answer from the company and I thought perhaps someone
would have experience with them.

Thanks very much,

Sean

|
| Sean Breheny
| Amateur Radio Callsign: KA3YXM
| Electrical Engineering Student
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2000\02\22@103900 by James R. Cunningham

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Sean,
I'm interested in using three Murata ENC-03J's for a roll, pitch, and yaw rate
sensing autopilot for a 16 foot span Quetzalcoatlus replica I'm working on.
Are you pleased with the Murata gyro so far?  And do you have a contact address
for the Tokin gyro?  How much do the Murata's cost in small quantities?

Thanks for your time,

Jim

Sean Breheny wrote:

> Hi All,
>
> I am trying to wrap up the design of a test board using a MuRata ENC-03J
> rate gyro.

2000\02\22@112715 by Andrew Kunz

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>Sean,
>I'm interested in using three Murata ENC-03J's for a roll, pitch, and yaw rate
>sensing autopilot for a 16 foot span Quetzalcoatlus replica I'm working on.
>Are you pleased with the Murata gyro so far?  And do you have a contact address
>for the Tokin gyro?  How much do the Murata's cost in small quantities?
>
>Thanks for your time,

The MuRata gyros are used in many of the heli gyros.  Arcamax uses them in the
products they did, and quite successfully at that.  I reverse-engineered their
product for FMA, one of the companies that they were selling it to
"exclusively."

Andy

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