OVERVIEW
FC-NVX2 functional calibrator intended use for calibration and testing next EEG amplifiers:
• NVX24, NVX36, NVX52
• NVX36T
• NVX136
• actiCHamp Plus
• another with compatible connectors and pinouts.
FC-NVX2 consist of main blocks:
1. MODE selector.
2. The precision voltage dividers with selectable divider ratio of input signals for check of EEG channels. Input signal from external voltage generator after resistive divides connect between all channels EEG and EEG GND lines (MODE in PASSIVE EEG position). For actiCHamp Plus amplifier after the divider can be used low noise and low offset active buffer for decrease output impedance (MODE in ACTIVE EEG position). This is buffer powered from EEG GND 4-pin connector lines.
3. The precision voltage dividers with selectable divider ratio of input signals for check of Auxiliary (AUX). Input signal from external voltage generator after resistive divides connect between AUX and AUX GND connectors or between signal lines of 5 pin AUX connector (MODE in any position).
4. The precision imitator of inter-electrode impedance for check of impedance measuring mode (MODE in IMPEDANCE position).
SPECIFICATION
| Parameter | Value |
| Mode | Passive EEG Active EEG Impedance |
| EEG dividers | 1:1, 1:10 (10,07), 1:100 (100,8), 1:1000 (999), 1:10000 (9981), Short circuit |
| EEG divider tolerance | ±0,5% |
| EEG impedance imitation | 1 kOhm, 10 kOhm, 20 kOhm, 50 kOhm, 120 kOhm, 400 kOhm |
| AUX divider tolerance | ±0,2% |
| AUX dividers | 1:1, 1:10 (10,07), 1:100 (100,8), 1:1000 (999), 1:10000 (9981), Short circuit |
| AUX divider tolerance | ±0,5% |
| Input signal max. value | ±32 V |
| Input signal connector | BNC |
| EEG connector type for actiChamp Plus / NVX36 / 36T / 128 | KEL40 pins (8830E-040-170S) |
| EEG connector type for NVX52 | KEL50 pins (8830E-050-170S) |
| GND actiChamp Plus / NVX128 | Binder 719, 4 pins (09-9792-20-04) |
| EEG connector type for NVX24/36 | D‑SUB DB‑25F |
| GND, EEG, AUX+, AUX- connectors type | TouchProof 1.5 mm, DIN 42 802‑ST |
| AUX connector type | Binder 719, 5 pins (09-9792-20-05) |
| LED indicators | power from AUX, EEG, EEG GND with Vpp=5 V |
| Active EEG mode amplifier | power from EEG GND with Vpp=5 V NOTE: If Vpp=3 V, then use Uin ≤ 400 mV for Mode Active EEG 1:1. |
| Case dimensions | 210 x 155 x 55 mm |
| Net weight | 0.5 kg |
PHOTO
