Mortara ELI 250 ECG Machine Keypad Board 5525-040-02B 26025-040-51
Good Condition Medical Parts
■ Product Describe
Keypad Board 5525-040-02B/26025-040-51 is the printed circuit board
(PCB) of the ELI 250 ECG machine. It integrates key circuits,
signal processing modules and interfaces. It is the core control
circuit component of the Mortara ELI 250 ECG Machine. As the "nerve
center" of the keyboard system, it is responsible for converting
physical key actions into electrical signals and transmitting them
to the motherboard.
It has high reliability and accurate signal processing capabilities
to ensure efficient and safe medical operations. Its IP protection,
anti-interference mechanism and modular maintenance characteristics
enable it to meet the needs of rapid diagnosis in clinical
environments while reducing maintenance costs. Users must strictly
follow the operating specifications to ensure long-term and stable
operation of the equipment.
■ Product Picture
■ Functions
1. Data Input
The keypad board is an important component for users to interact
with the ECG machine. It is equipped with a standard alphanumeric
flexible keyboard, which can be used to enter the patient's basic
information, such as name, age, gender, medical record number, etc.
It can also set various parameters of the ECG machine, such as
recording time, printing format, measurement parameters, etc.
2. Quick Operation
A dedicated "one-touch" button is provided to facilitate operators
to quickly start common functions such as ECG acquisition, rhythm
printing and ECG transmission. For example, in an emergency, a
specific button can be used to quickly start collecting the
patient's ECG data, or quickly print out the current ECG rhythm
map, so that doctors can view it in time.
3. Menu Navigation
The arrow keys and confirmation keys on the keyboard can be used to
easily browse and operate the menu system of the ECG machine, enter
different functional modules, and select various settings and
operations, such as entering the storage management module to view
the saved ECG records, or entering the communication settings
module to configure the network connection of the device.
4. Function control
The keyboard can be used to control various functional states of
the electrocardiograph, such as turning the power on or off,
pausing or continuing data collection, switching between different
display modes, etc. In addition, there may also be some special
function control buttons, such as heart rate alarm setting, lead
selection, etc., to meet different clinical needs.
■ Products Parameters
| Product Name | Keypad Board |
| Part Number | 5525-040-02B 26025-040-51 |
| Model | For Mortara ELI 250 ECG Machine |
| Interface Type | FPC (flexible printed circuit), 20-pin, pitch 0.5mm |
| Operating voltage | DC 3.3V±5% |
| Operating temperature | -10°C to 50°C |
| Storage temperature | IP54 (dust and splash proof) |
| Size | Length 120mm× Width 80mm× Thickness 1.6mm |
| Weight | Approx. 50g |
■ Working Principle
1. Circuit Architecture
Input Layer: The conductive contacts of the elastomer membrane
keyboard contact the silver paste lines on the PCB to form a closed
loop.
Signal Processing: The Application Specific Integrated Circuit
(ASIC) de-jitters the key signal and transmits it to the mainboard
via I²C or SPI protocol.
Output Control: Receives the mainboard feedback signal to drive the
backlight LED or screen prompt (such as the "lead off" alarm).
2. Interface Design
Flexible Printed Circuit (FPC) Connection: Communicates with the
mainboard via the ZIF (zero insertion force) connector, supporting
plug-and-play.
Anti-interference mechanism: Through differential signal
transmission and shielding layer design to reduce the impact of
electromagnetic interference (EMI) on the signal.
