Annex E (informative) — A-100 reference figures
Where EIS restates the Doepfer A-100 pages, and where it differs from them.
E.1 Construction details
Doepfer publishes Construction Details A-100, retrieved 2026-10-09. EIS restates some of its figures as inherited requirements; it does not apply the page by reference. The A-100 check compares selected figures with EIS.
| Figure on the page | Value | EIS requirement | Provenance |
|---|---|---|---|
| 3U front panel height | 128.5 mm | PANEL-006, 128.5 mm | inherited |
| Front panel mounting-hole inset | 3.0 mm | PANEL-008 | inherited |
| Front panel mounting-hole drill | Ø3.2 mm | PANEL-010 | inherited |
| Front panel thickness | 2 mm | PANEL-004, at most 2.0 mm; EIS recommends 1.6 mm to 2.0 mm | inherited; EIS |
| Front panel widths | below N × 5.08 mm | PANEL-002, at most N × 5.08 mm for any positive whole N; EIS recommends 0.3 mm below | inherited; EIS |
| Mean front panel width gap | 0.309 mm | The 0.3 mm width clearance EIS recommends | EIS |
The panel figures EIS derives from these are in 5.2.1.
E.2 Technical details
Doepfer publishes Technical Details A-100, retrieved 2026-10-16. The signal check quotes its figures and reports where EIS differs. The page's patch levels are typical ranges; modules in use exceed them, and an input has to accept what an output may send, so EIS sets audio and control CV at ±10 V peak.
| Figure on the page | Value | EIS class | Provenance |
|---|---|---|---|
| Audio | typically 10 Vpp (−5 to +5 V) | MOD-AUDIO ±10 V peak | EIS |
| LFO | −2.5 to +2.5 V | MOD-CV at range B5 (±5 V) | EIS |
| ADSR | 0 to +8 V | MOD-CV at range U10 (0 to +10 V) | EIS |
| Gate, trigger, clock | typically 0/+5 V; above about +3 V is high, below 1 V is low; withstands up to +12 V | MOD-GATE high ≥ +3 V, low ≤ +1 V; BUS-GATE 0/+5 V | inherited |
| Pitch CV | 1 V per octave; no CV value is assigned an absolute pitch | MOD-CV-1VOCT 1.00 V/octave, 0 V = C0 (the reference is EIS's); BUS-CV 1 V/octave | EIS; inherited |
| Input and output impedance | not stated | 1 kΩ source, 100 kΩ load | EIS |