Supported ScopeMeter Models & Waveform Envelopes

FVF Viewer is engineered to parse and visualize binary .fvf (FVF) waveform captures across portable ScopeMeter test instruments. Check your instrument family, channel layout, and capture envelope below before opening your files.

Supported ScopeMeter Instrument Families

FVF Viewer is format- and envelope-driven rather than model-gated. The parser validates files by checking the binary signature (FV.FVF), record layout, and physical envelope parameters rather than enforcing a restrictive model-code whitelist. Captures from all major ScopeMeter instrument families conforming to the format are supported:

Supported Channel Configurations

ScopeMeter acquisitions record varied channel combinations depending on instrument hardware and test mode:

• Single-Channel (1 Channel): Single input acquisitions (e.g., Channel A / Input A or German Eingang A) with maximum sample record depth.
• Dual-Channel (2 Channels): Dual simultaneous inputs (e.g., Channels A and B) for differential timing, phase, or comparative analysis.
• Three-Channel (3 Channels): Non-sequential physical channel subsets (e.g., Channels A, B, and D) recorded when intermediate channels are disabled.
• Four-Channel (4 Channels): Full quad-channel captures (Channels A, B, C, and D) from 4-channel ScopeMeter and MDA instruments.
• Derived Math Channels: Best-effort recovery and display for mathematical operator traces (e.g., Math A-B or German Mathematik A-B).

Technical Parser Envelope

FVF Viewer's Rust/WebAssembly engine decodes waveform files within the following verified technical parameters:

• Sample Count Range: Supports captures containing from 500 samples (shortened envelope) up to 250,000 samples (deep memory envelope) per channel.
• Horizontal Timebase: Validates timebase steps from 1.0 ns/div up to 120.0 s/div (2 min/div roll mode).
• Localized Decimal Formats: Automatically normalizes both standard period decimals (e.g., 1.333 us/Div) and European comma decimals (e.g., 1,333 us/Div, 666,7 ns/Div).
• Channel Prefix Locales: Supports standard English (Input A–D), German (Eingang A–D), and bracketed ([A-D]) channel tags.
• Timestamp Reconstruction: Precision 64-bit floating point timestamp generation (t_i = t_left + i · delta_t) ensuring accurate time-axis alignment without drifting.
• Physical Channel Decoding: Decodes raw integer samples scaled by per-channel vertical calibration factors (raw × scale) with bounds-checked memory access and NaN-preserving rail saturation detection.
• Derived Channel Decoding: Recovers math operator payloads using fixed-point integer sample decoding, accommodating non-standard parameter block offsets.