Implement Negative Voltage Range Support

[tylerkron]

Type: Feature
Priority: High
Epic: Enhanced Resolution & Range Support

Description

Add support for negative voltage ranges (±10V) in addition to positive ranges (0-5V, 0-10V) for differential analog inputs.

Acceptance Criteria

• Update voltage range handling to support negative ranges
• Correctly interpret signed vs unsigned raw values from device
• Support bipolar ranges: ±1V, ±5V, ±10V
• Maintain support for unipolar ranges: 0-1V, 0-5V, 0-10V
• Update data sample processing for negative voltages
• Unit tests for positive and negative voltage scaling

Key Changes

• Handle signed integer conversion for bipolar ranges
• Update offset calculations for centered ranges
• Ensure UI displays negative values correctly

Files to Modify

• Daqifi.Desktop/Device/AbstractStreamingDevice.cs (scaling and data processing)
• Daqifi.Desktop/Channel/AnalogChannel.cs (range validation)

Value

Enables accurate measurement of negative voltages on Nyquist 3's ±10V differential inputs

Testing Requirements

• Test positive voltage scaling (0V to +10V)
• Test negative voltage scaling (-10V to 0V)
• Test full bipolar range scaling (-10V to +10V)
• Verify correct zero-point handling
• Integration test with actual differential measurements