Recently, we received customer feedback regarding the A112 (A11 series) flight panel encoders. By reviewing email exchanges, we can clearly identify the issues and provide concrete solutions.

1. Problem Description

The main issues reported by the customer Max are:

1. Encoder Jitter

   • All four encoders send signals even when untouched, causing the simulator controls or instruments to move unexpectedly.

   • For example, turning the lighting rotary causes the flight deck lights to flash, continuously adjusting brightness up and down.

2. Rotary Misalignment

   • The physical position of the Gain and Tilt rotaries does not match the software’s CAL (calibration) position.

3. A107 vs. A112 Comparison

   • The A107 encoders operate normally with no jitter or unexpected movements.

   • The A112 (A11 series) has more encoders, which makes the jitter issue more noticeable.

2. Cause Analysis

Based on technical analysis and customer feedback, the reasons are:

1. More encoders increase sensitivity to interference

   • The A112 has more encoders and potentiometers. When multiple controls operate simultaneously, small electrical interference can trigger unintended signals.

   • The A107 has fewer encoders, so it is less sensitive to such interference.

2. Software signal processing limitations

   • Using MobiFlight software alone cannot fully filter out encoder jitter.

   • Rowsfire’s dedicated app provides optimized signal filtering, but older versions still leave some jitter.

3. Rotary alignment issues

   • The Gain and Tilt misalignment is related to software calibration. Older versions of the Rowsfire app cannot automatically adjust this.

3. Solutions

Rowsfire provides the following solutions:

1. Software Update

   • The upcoming Rowsfire App 1.9 will optimize encoder signal filtering and eliminate jitter.

   • It will also automatically correct the Gain and Tilt rotary alignment.

   • After installation, the A112 should operate smoothly.

2. Interim Recommendations

   • Keep encoder wiring neat and separated to reduce interference.

   • Use a stable USB port for power to avoid voltage fluctuations that can worsen jitter.

3. MobiFlight Optimization

   • While MobiFlight allows partial configuration adjustments, it cannot fully resolve A112 jitter in the short term due to differences in filtering algorithms compared to the official app.

4. Customer Q&A Summary

Q1: Why doesn’t the A107 have this issue?

• The A107 has fewer encoders, making it less sensitive to electrical interference.

• The A112 (A11 series) has more encoders, which increases signal sensitivity.

Q2: How to fix Gain and Tilt rotary misalignment?

• The upcoming Rowsfire App 1.9 will automatically correct the alignment, no manual adjustment is needed.

Q3: Can MobiFlight fix the jitter?

• Currently, MobiFlight cannot completely eliminate the jitter. It is recommended to wait for the official app update.

5. Conclusion

• Root Cause: A112 encoder count + electrical interference + older software filtering → jitter and rotary misalignment.

• Official Solution: Rowsfire App 1.9, which will fully fix jitter and alignment issues.

• Temporary Measures: Keep wiring neat and use stable USB power.

For customers, simply waiting for the app update will restore smooth operation. The A107 does not have this problem because it has fewer encoders and is less susceptible to interference.

💡 Tips for Flight Panel Users

If you encounter encoder jitter or unexpected instrument movements:

1. Ensure your software is the latest version.

2. Check wiring neatness and power stability.

3. For panels with many encoders, jitter is usually a software signal-processing issue and can be resolved through an official app update.
   

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