Sony GBL-T3 Service manual

Adjusting the gimbal parameters (GBL-T3)
Airpeak gimbal
setting guide

Correct adjustment of the gimbal is essential for proper use. Please review the
following explanation and make any necessary changes to the gimbal’s settings.
Please refer to Help Guide for the instructions on how to mount and use
the gimbal.
Preset of motor parameters ..................................................... 2
Important note: Be sure to do this before using the gimbal.
To use the gimbal correctly, you need to enter the appropriate motor
parameters for your camera and lens. This section describes how to apply
motor control presets all at once.
Manual adjustment of motor parameters ............................ 3
If the motor parameters of the gimbal do not match due to the dierence
in weight when the camera is equipped with accessories (such as a hood,
a filter, etc.) or the individual dierences in the gimbal, you need to manually
adjust the motor parameters. This section will teach you how to do this.
Calibration .................................................................................... 13
Normally, it is not necessary to do this calibration. Only do this if you
experience symptoms of drift, such as if the camera cannot be leveled,
if the angle gradually shifts, etc. Follow these steps to execute Gyro
calibration of the IMU sensor.
Overview
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Overview 1

Main tuning
Start
Apply a preset
To use the gimbal correctly, you need to enter the appropriate motor parameters
for your camera and lens. This section describes how to manually enter motor
parameters and how to apply presets all at once.
Sections:
1. How to input motor parameters with Airpeak Flight
2. Apply preset at once
Preset of motor parameters
1. How to input motor parameters with Airpeak Flight
1Tap “Settings“ at the top right of the Airpeak Flight app screen.
2Tap [Gimbal] from the displayed setting menu.
3Tap [Main Tuning] to display the parameter setting screen for motor control.
4Each parameter value can be changed by moving the slide bar or tapping the value on the
right side and entering the value via the on-screen keyboard that is displayed.
2. Apply preset at once
1Tap “Settings” at the top right of the
Airpeak Flight app screen.
2Tap [Gimbal] from the displayed setting menu.
3Tap [Main Tuning] to display the parameter
setting screen for motor control.
4Tap [Start] in [Apply a preset] menu at the
top of the motor parameter setting screen.
5Select a camera and lens and apply motor
parameter presets.
Once applying preset has been done, refer
to Trouble Shooting in Manual adjustment
of motor parameters section as needed.
3
4
5
Note: The preset values of the motor parameters are
the values under the condition without a lens hood,
and with a filter attached.
Check “Compatibility” to know the camera body
and lens supported by this product.
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Preset of motor parameters 2

If the motor parameters of the gimbal do not match due to the dierence in
weight when the camera is equipped with accessories (such as a hood, a filter,
etc.) or the individual dierences in the gimbal, you need to manually adjust
the motor parameters.
Please install PC software “gTuneDesktop” by Gremsy for motor parameters
adjustment.
Sections:
1. About motor parameters
2. Connect gimbal to PC
3. Start gTuneDesktop and input initial parameter
4. Adjust motor parameters on each axis
5. Check the image
6. Trouble shooting
Manual adjustment of
motor parameters
1. About motor parameters
Stiffness
It is a parameter to control the horizontal stability
of gimbal. (Min: 0` Max: 255)
A higher value causes gimbal oscillation, while a
lower value causes decreased stability.
*This value varies depending on the model of
camera and lens used.
Gyro Filter, Output Filter
It is a parameter to control the eect on gimbal
oscillation control. (Min: 0` Max: 10)
A higher value can suppress oscillation but will
sacrifice horizontal stability.
Hold Strength
It is a parameter to control the holding strength
of gimbal position. (Min: 0` Max: 100)
The gimbal can hold the position with a higher
value, but oscillation will occur.
Gain
It is a parameter to control the speed of gimbal
returning to horizontal. (Min: 0` Max: 255)
The gimbal can be leveled quickly with a higher
value, but oscillation will occur.
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Manual adjustment of motor parameters 3

2. Connect gimbal to PC
1Before motor parameter adjustment, please double check the gimbal is properly balanced.
If it is not balanced, refer to Startup Guide or Help Guide and try the balance adjustment again.
2Control cable needs to be disconnected during motor parameter adjustment. With the power
source of Airpeak turned o, disconnect one side of the control cable as shown in the image below.
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Manual adjustment of motor parameters 4
Control cable
Note:
Pull out this
lock while
pinching
the top and
bottom.
3Turn the aircraft on.
4Turn the camera on to avoid a position change of the focus unit in the lens.
5Connect your PC and Gremsy gimbal with supplied microUSB cable.
2
5

3. Start gTuneDesktop and input initial parameter
1Start “gTuneDesktop”, select Gremsy T3, then press the [CONNECT] button.
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Manual adjustment of motor parameters 5
2After connecting, the screen will switch to [SETTINGS]. Press the Lock button at the top left
of the screen. Note: All subsequent operations must be performed in Lock mode.
1
2
2
1

3. Start gTuneDesktop and input initial parameter (continued)
3Depending on the model of camera used, set the following motor parameters for
both [BASIC] setting and [EXPERT] setting.
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Manual adjustment of motor parameters 6
Hint: In [SETTINGS], you can switch between [BASIC] setting and [EXPERT] setting with the
slide button on the center of the screen.
BASIC
SETTING
STIFFNESS
TILT 20
ROLL 20
PAN 20
FILTER GYRO FILTER 1
OUTPUT FILTER 6
EXPERT
SETTING
HOLD STRENGTH
TILT 50
ROLL 40
PAN 50
GAIN 180
Table of Motor parameters for initial setting (Except ILCE-7C)
Table of Motor parameters for initial setting (ILCE-7C)
BASIC
SETTING
STIFFNESS
TILT 20
ROLL 20
PAN 20
FILTER GYRO FILTER 1
OUTPUT FILTER 6
EXPERT
SETTING
HOLD STRENGTH
TILT 55
ROLL 40
PAN 55
GAIN 180
BASIC setting screen EXPERT setting screen

4. Adjust motor parameters on each axis
Adjust the motor parameters on each axis in the following order to get a proper response without any
overshoot on the graph: TILT ROLL PAN
1Check the graph.
A. Press the [MONITOR] button to switch to the MONITOR screen.
B. Press the arrow button on the right side of the MONITOR screen to renew the graph.
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Manual adjustment of motor parameters 7
Monitor screen Graph
C. Press the [SETTINGS] button on the originally open screen to return to the BASIC setting screen.
D. Place the SETTINGS screen and the graph screen side by side.
BASIC setting screen Graph screen

4. Adjust motor parameters on each axis (continued)
2TILT axis parameter adjustment.
A. While holding the gimbal so that it doesn’t roll, push the TILT axis of the gimbal directly
by hand and move it up to +10 degrees (Angle of the TILT axis will be displayed at the top of
BASIC setting screen).
B. Quickly release your hand from the gimbal.
C. If an overshoot happens, increase the TILT value on the SETTINGS screen and move the
TILT axis +10 degrees again then check if the overshoot is eliminated (The recommended
incremental value is around 5).
D. Repeat steps B – C until there is no overshoot. Search for the minimum value, as gimbal
oscillation will occur when the value is too high.
E. Do the same sequence with the opposite direction (-10 degree) and set the TILT value.
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Manual adjustment of motor parameters 8
+10 degree tilt
( - 10)
(+10)

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Manual adjustment of motor parameters 9
Hint: The graph screen on the right figure below, you can see that the graph goes over the
center part and penetrates to the lower side (so-called “overshoot”).
NO Overshoot Overshoot
Hint: In the left figure below, there is no overshoot in the positive direction, but there is in the
negative direction. Increase the TILT value to eliminate the overshoot in both direction as shown
in the figure on the right.
Overshoot
NO overshoot
No Overshoot
NO overshoot
4. Adjust motor parameters on each axis (continued)

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Manual adjustment of motor parameters 10
3ROLL axis parameter adjustment.
In the same sequence as TILT axis adjustment,
tune the parameter in ROLL axis.
While holding the gimbal so that it doesn’t
move in PAN axis, push the left side of the
gimbal’s ROLL axis down with your hand
until it reaches ±10 degrees.
Increase the ROLL value in BASIC setting until
the overshoot is eliminated. Search for the
minimum value, as gimbal oscillation will
occur when the value is too high.
4PAN axis parameter adjustment.
In the same sequence as TILT axis adjustment,
tune the parameter in PAN axis.
While holding the aircraft so that it doesn’t
move, push the gimbal in PAN axis until it
reaches ±10 degrees.
Increase the PAN value in BASIC setting until
the overshoot is eliminated. Search for the
minimum value, as gimbal oscillation will
occur when the value is too high.
( - 10)
(+10)
(+10)
( - 10)
Hint: PAN value in the BASIC setting screen
would change because the gimbal is not
connected to the aircraft and the gimbal can
move in PAN axis.
If this phenomenon occurs, press the POWER
button near the upper left of the screen to turn
the gimbal o. After a few seconds, press this
POWER button again then the gimbal turns on
with initial (0 degree) position.
4. Adjust motor parameters on each axis (continued)

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Manual adjustment of motor parameters 11
5. Check the image
1Turn on the controller and the mobile device, then check the image of main gimbal with Airpeak
Flight. Make sure that there is no oscillation on the screen. If oscillation occurs, identify which axis
is vibrating by decreasing axis value of each axis around 20 in BASIC setting of gTuneDesktop.
Once you find the vibrating axis, adjust the value by around 5 to 10, then re-check the image
on Airpeak Flight.
If the image is still vibrating, turn o the aircraft and double check that the balance of the gimbal
is properly adjusted.
2Pull out the microUSB cable and turn o the aircraft. Re-connect the control cable which you
disconnected in “Connect gimbal to PC” section.
The image is jiggling
If the image is jiggling while hovering or flying slowly, try the following adjustments:
• Increase STIFFNESS value by 5 to 10.
• Decrease HOLD STRENGTH value. Do not set the value lower than 40. If you change the
HOLD STRENGTH value, you need to adjust the STIFNESS value as well.
• Decrease GAIN value. Do not set the value lower than 150. If you change the GAIN value,
you need to adjust the STIFNESS value as well.
6. Trouble shooting
Here are hints for manual adjustment of motor parameters for movie shooting.
It is not necessary to adjust every parameter.
Double check the following points before changing the motor parameters:
• The balance of gimbal is properly adjusted.
• Bottom lever of the camera plate and the top camera screw are firmly tightened.
• If you have some problems after “Preset of motor parameters”
- Choose correct model of camera and lens.
- Ensure parameter is applied correctly.
While shooting movie, rolling shutter eect might occur depending on the model, shooting mode,
or settings. It would be recommended to set a shutter speed slower than double the framerate.

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Manual adjustment of motor parameters 12
6. Trouble shooting (continued)
The temporary vibration occurs in the image
With quick acceleration or slow down, the image may temporarily vibrate. This may be avoided by
taking the following actions:
• Decrease STIFFNESS value by 5 to 10.
• Increase HOLD STRENGTH value. Do not set the value higher than 55. If you change the
HOLD STRENGTH value, you need to adjust the STIFNESS value as well.
The image resolution gets lower
If the image quality gets lower while hovering or flying slowly, try the following adjustments:
• Decrease STIFFNESS value by 5 to 10.
• Decrease HOLD STRENGTH value. Do not set the value lower than 40. If you change the
HOLD STRENGTH value, you need to adjust the STIFNESS value as well.
The image is distorted or undulate
With quick acceleration or high-speed flight, image may be distorted or undulate.
This may be avoided by taking the following actions:
• Decrease STIFFNESS value by 5 to 10.
• Decrease HOLD STRENGTH value. Do not set the value lower than 40. If you change the
HOLD STRENGTH value, you need to adjust the STIFNESS value as well.

Here are the steps to execute Gyro calibration of the IMU sensor.
Normally, it is not necessary to do this calibration. Only do this if you experience
symptoms of drift such as camera cannot be leveled, angle gradually shifts, etc.
Please install PC software “gTuneDesktop” by Gremsy for calibration.
Calibration
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Calibration 13
Attention:
• Calibrate the gimbal on a level and stable surface.
• Do not touch or move the aircraft or gimbal
while calibration is in progress.
• Do not select “ACCEL” in the center of
IMU screen.
Calibrating the Gyro of the IMU sensor
1Connect the gimbal to the aircraft and turn it on.
2 Once the gimbal gets active, connect the gimbal to PC with supplied microUSB cable.
3Run “gTuneDesktop”. Select “Gremsy T3” in the menu, then press “CONNECT” button
in the bottom right.
4 Screen will be switched to [SETTINGS] as the connections are done, then press “IMU” tab.
5 Press “CALIBRATE” button, then press “OK” to start calibration.
6 After the calibration is finished, press “POWER” to turn the gimbal on.
4
5
2

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Calibration 14
Hint: When the initial position of gimbal is not level
The angle can be adjusted with the controller.
• Use a remote controller in operation role “Sub”.
• Tap “Settings” in the top right on “Airpeak Flight”.
• Tap “Remote controller” in the displayed setting menu.
• Tap “Stick” and select “Mode 3” or “Mode 4” in the “Stick operation mode” menu.
• Tilt the left stick left and right to balance the gimbal horizontally.
Software
gTuneDesktop is a PC software developed by Gremsy. By connecting to Gremsy gimbal,
the software can:
• Change parameters
• Calibrate the sensor
• Check the position of gimbal
• Update firmware
Get USB derive and software from following websites.
Installers
1USB Driver
Download Universal Windows Driver from below site.
*This link will direct you to Silicon Laboratories, Inc website.
2 gTuneDesktop
* This link will direct you to GitHub, Inc website.
Download
Download

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