Secondhand Nihon Kohden Neurofax EEG-1200K 32 Channel EEG Device

Objective AI Report

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Report date: 26.02.2026

Nihon Kohden Neurofax EEG Device Analysis Report

Device Identification

The system examined in the visuals is a fully-featured and mobile Electroencephalography (EEG) device used in neurology clinics to record brain electrical activity. The system consists of a data processing unit (PC), monitor, input box (headbox/amplifier), photic stimulator equipment, and power isolation components mounted on a mobile transport cart (trolley).

Brand and Model

All components on the device have been examined in detail, and the brand and model information has been identified as follows:

• EEG System Main Brand: NIHON KOHDEN (Japanese medical manufacturer).
• Model Series: Neurofax (Clearly written on the amplifier unit).
• Photic Stimulator Unit: NIHON KOHDEN LS-120 (In the last visual, “LS-120” and “FLASH ENERGY 1.28J” inscriptions were read on the unit on the bottom left shelf).
• Amplifier (Headbox): NIHON KOHDEN Neurofax (Connection diagram and form factor are compatible with the JE-921A series, “Selector” and “Impedance Check” buttons are present).
• Computer Case: HP (Hewlett-Packard) Small Form Factor desktop computer.
• Monitor: DELL branded, standard LCD monitor with a 4:3 aspect ratio.

Originality

The EEG signal processing amplifier and photic stimulator driver unit, which are the heart of the system, are original NIHON KOHDEN parts. However, the system is a configuration assembled with IT hardware (HP case, DELL monitor) and a generic transport cart. In such devices, selecting PC and monitor components from commercial brands is an industry standard and does not compromise originality. The device appears to be an assembled system, not an original factory-issued “All-in-One” cart design.

Areas of Use

This device is designed for use in Neurology outpatient clinics and intensive care units. Its primary purpose is the diagnosis of epilepsy, monitoring of seizure disorders, and evaluation of brain functions. The system can perform both spontaneous EEG recordings and apply photic stimulation (light stimulation) tests thanks to the LS-120 unit.

Quantity Information

The visuals show a single main system (including the trolley). The system includes the following parts:

• 1 Transport Cart (Trolley)
• 1 NIHON KOHDEN Headbox (Amplifier)
• 1 Articulated Arm (for Headbox)
• 1 Photic Flash Lamp (on the articulated arm)
• 1 DELL LCD Monitor
• 1 Keyboard (White/Beige colored) and 1 Mouse (Black)
• 1 HP Computer Case
• 1 NIHON KOHDEN LS-120 Photic Driver Unit
• 1 Isolation Transformer (Power unit)
• 2 Boxes of CNSAC brand EEG Electrodes (Consumables)
• 1 Box of KONIX brand EEG Paste (Consumables)

General Condition

The device is in used condition (second-hand). Its general condition appears functional and intact. The computer is on, and the software is actively running, as indicated by the signal flow on the monitor. The green LED on the HP computer case is lit, confirming that the system is powered and operational.

Physical Deformations

No significant dents or rust have been detected on the metal support profiles and shelves. The keyboard shows typical signs of yellowing due to long-term use (UV effect). No physical breaks or cracks are visible in the amplifier input slots. The transport wheels have usual dirt due to use, but their structural integrity is maintained.

Mechanical Components

The mechanism of the articulated arms appears sturdy and can hold the photic lamp and headbox in place. The monitor is mounted using a VESA mounting bracket added later to the profile and appears stable. There is no visible sagging in the drawers or shelf system.

Electronic Components and Risk of Failure

The system being on (monitor display and PC light) indicates no electronic “boot” (startup) issues. The cable management on the back panel is quite complex and disorganized. Sagging and intertwining cables have the potential to apply pressure to connector heads during movement, leading to data loss or poor contact (Potential Risk). The input ports on the amplifier appear clean.

Accessories and Consumables

Ready-to-use consumables are available with the device:

• Electrodes: There are 2 boxes of CNSAC brand “Reusable EEG Cup Electrodes” (likely reusable gold-plated cup electrodes) on the tray.
• Conductive Paste: 1 unit of KONIX brand “EEG PASTE” (likely 400 gr.) is visible. The paste container is in use.

Battery and Power Status

The device operates with mains electricity (220V). An internal UPS or battery pack could not be identified in the visuals; however, the white box on the right side of the bottom shelf acts as an “Isolation Transformer,” protecting the patient from mains fluctuations. The “BREAKER” switch on the unit is active (green illuminated switch).

Label Information

Critical data read from the device components:

• Headbox Panel: Numbered inputs according to the 10-20 system (FP1, FP2, C3, C4 etc.). Impedance control and Selector button labels are present.
• Bottom Unit (LS-120): Brand “NIHON KOHDEN”, Product “LS-120”, Feature “FLASH ENERGY 1.28J”.
• Monitor Label: DELL logo is present as an embossed feature on the back panel.

Screen Analysis

The EEG recording software is active on the DELL monitor. Multi-channel (likely 16-32 channels) waveforms (traces) are flowing on the screen. The software interface includes “Montage” settings, time scale, and amplitude information. Although the signal quality cannot be clearly understood from the visual, the software is observed to be providing active data flow.

Period of Use

Upon examining the aesthetics and generation of the hardware (HP Case, DELL Monitor, White Keyboard), it is estimated that the device’s IT infrastructure is based on approximately 10-12 year old technology (cases from the DDR2/DDR3 era). The headbox module also adheres to the classic Nihon Kohden design language from the same period.