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

Objective AI Report

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Report date: 20.01.2026

Nihon Kohden Neurofax EEG and Izoly PC Hardware Analysis Report

Device Identification

The examined images belong to an EEG (Electroencephalography) workstation used for medical imaging and diagnosis. The system is a complete set consisting of a mobile transport stand, an electrode connection box (Headbox/Amplifier), a photic stimulator unit and lamp, a computer case, a monitor, a keyboard, and a mouse.

Brand and Model

The system is composed of components from different brands. According to visual analysis, the identified specific brand and model information is as follows:

• EEG System / Connection Box: The input unit of the device features the “NIHON KOHDEN” logo and the inscription “Neurofax”. The unit also has technical control panels such as “SELECTOR(kΩ)” and “IMPEDANCE CHECK”.
• Photic Stimulator Control Unit: The device located on the lower shelf of the system is branded “NIHON KOHDEN”, and its model number “LS-120” is clearly legible. The device features the technical information “FLASH ENERGY 1.28J”.
• Monitor: The “SONY” brand is visible on the bottom bezel of the screen. A “WelchAllyn” sticker, believed to have been affixed later, is present on the upper left corner of the monitor, but the hardware is Sony branded.
• Computer Case: The front panel of the black computer case features the “izoly” brand.
• Optical Drive: The CD/DVD drive integrated into the computer case is “ASUS” branded.
• Keyboard: The “PLATOON” brand is legible on it.

Originality and Configuration

The medical components of the system (Electrode box and Photic stimulator) are original Nihon Kohden parts. However, the IT side (PC case, keyboard, and monitor) appears to have been revised or replaced with local market products. Brands like “Izoly” and “Platoon” are typically chosen for subsequent computer updates, not in original medical system configurations. This indicates that the system is a custom-built workstation.

Areas of Use

This system is used in neurology outpatient clinics and relevant hospital units to measure and record the electrical activity of brain waves. It is suitable for the diagnosis of epilepsy, sleep disorders, and monitoring various brain functions. The photic stimulator component is used to provide intermittent light stimulation to trigger photosensitive epileptic seizures for diagnostic purposes.

Quantity Information

When evaluated as a single unit, there is 1 EEG Workstation. The main components of the workstation are:

• 1 Unit Transport Cart (Stand)
• 1 Unit LCD Monitor
• 1 Unit Computer Case (PC)
• 1 Unit Keyboard and 1 Unit Mouse
• 1 Unit Nihon Kohden Neurofax Electrode Connection Box (Headbox)
• 1 Unit Nihon Kohden LS-120 Photic Stimulator Control Unit
• 1 Unit Photic Lamp with Articulated Arm
• Numerous electrode cables (connected to the Headbox)

General Condition

The device is generally installed and in working condition. An active signal flow is visible on the monitor screen, indicating that the system is operationally active software-wise and capable of acquiring data. However, cosmetically, it is in a “used” and “in need of maintenance” condition.

Physical Deformation and Cleanliness

No significant physical cracks or fractures were detected on the device in the images. However, there are noticeable deficiencies concerning cleanliness and organization:

• Heavy dust accumulation was observed on the front panel of the computer case, especially around the ventilation holes and connection ports.
• Usage marks are present on the monitor and the stand.
• Discoloration or dirt accumulation, which occurs over time, may be visible on the white stand and connection box.

Cable Arrangement and Accessories

The numerous colorful electrode cables attached to the electrode connection box (Headbox) are quite tangled and messy. The cables need to be organized. Although no visible breaks were observed in the cables, storing such delicate cables in a tangled manner can create a risk of internal conductor breakage. While no rust was seen on the connectors at the cable ends, slight yellowing due to use is present on the cable sheaths.

Electronic and Mechanical Components

Mechanically, the wheels of the transport cart and the articulated arm mechanism of the photic lamp appear sturdy. The lamp can remain in the desired position. Electronically, the monitor’s image is clear, and signal noise appears standard as far as can be understood from the visual. The green “POWER” light is illuminated on the photic stimulator (LS-120), confirming that the device is receiving power and is active.

Labels and Technical Information

Label details obtained from the images are as follows:

• Neurofax Unit: The input ports are coded according to the international 10-20 EEG placement system, such as “FP1, FP2, F3, F4, C3, C4, P3, P4”. Additional input ports like “DC 3” and “DC 4” are present on the side panel.
• LS-120 Unit: The front panel shows “SINGLE” and flash energy information “1.28J”.
• Lamp Arm: A “CAUTION” warning label with black text on a yellow background is present on the lamp, but the rest of the text is too far to be legible.

Screen Analysis

An EEG recording or review software is currently open on the monitor. Multi-channel (polygraphic) waveform patterns are flowing on the screen. The background color is in light cream/beige tones. A time counter “00:00” is visible at the top of the screen. This situation proves that the system’s display capability is active.

Battery and Power

The system is set up to operate directly with mains electricity. There is no visual evidence of an external or internal battery pack. The computer and medical devices have wired connections.

Current Faults and Potential Risks

There is no definitive evidence in the images indicating that the device is faulty, such as an “Out of order” warning, a broken screen, or an error code. The system is in working condition. However, potential risks can be stated as follows:

• Heavy dust in the computer case (especially in the front air intakes of the Izoly case) can reduce cooling performance and create a risk of overheating.
• Tangled electrode cables may lead to contact issues over time. These cables are consumable in nature and their inspection is recommended.

Size and Compatibility

It has standard PC and monitor dimensions. The transport stand is designed to be at an adult’s waist height. The device is portable and suitable for in-room mobility.