PPG-2TF-660
Transmittance SpO₂ Module

Works with the AECG100 main console or SECG 5.0 AIO Multi Vital Sign Simulator as the first transmittance SpO₂ performance tester designed for R&D engineers in oximeter manufacturers.
This dual-channel optical module outputs R and IR analog signals to test heart rate and blood oxygen saturation (SpO₂) functions and is suitable for the development of transmittance PPG products such as finger clip oximeters and patient monitors to test performance.

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Origins

Due to COVID-19, people paid more attention to blood oxygen measurement at home. The finger-clip oximeter can measure blood oxygen saturation (SpO₂) in a short time and became very popular. Manufacturers are committed to the development and innovation of new products.

After communicating with major brand manufacturers, we learned that to obtain more accurate test results, engineers are very much looking forward to having a simulator which is able to set AC and DC of R or IR analog signals, waveforms, frequency and amplitude arbitrarily when designing the blood oxygen function. To verify the challenges faced at each stage of the design, such as signal processing, frequency response, system integration verification, etc., above functions are essential. Therefore, the AECG100+ PPG-2TF-660 transmittance SpO₂ performance module came into being. It can not only meet the flexible setting of PPG waveform expected by engineers, but also can develop its own exclusive R curve. There is no need to accommodate the limited and specific R curve.

In addition to the above-mentioned full-featured and flexible tests, we also learned from our customers that engineers often need to perform quick verification. They not only need to confirm the performance of different competing products during the product development stage, but also need to verify the R-curve of the blood oximeter before mass production.

The PPG- 2TF-660 system automatically calculates the R/IR DC value of the DUT and imports it into the SpO₂ table to quickly establish the R curve, effectively verifying the quality of the oximeter. PPG-2TF-660 also has built-in functions for superimposing 14 kinds of ambient light signals, simulating respiratory variations, and multiple sets of commonly used R curves, making the test more comprehensive and efficient.

At the same time, to assist engineers conduct testing more efficiently, we also provide a free Software Development Kit (SDK), which helps to develop automated testing software, flexibly expand testing capabilities, and reduce human errors resulted from repeated settings and operations. We can use the PPG- 2TF - 660 module to accurately test the blood oximeter to ensure accuracy and consistency, and meet the requirements of the blood oximeter product specifications.

Features

Select

Basic Waveform Output
PPG Signal Generation
Adjustable PWTT Pulse Wave Transit Time
Blood Oxygen R Curve Simulation
Saving Test Parameters
Raw Data Playback
Simple Automated Test

Outputs PPG Waveform, Sine, Triangle, and Square. Users can adjust large and precise parameters according to needs, and DC offset signal testing.

Simulates Sine, Triangle, and PPG analog signals, providing analog signals of green, red, and infrared light. It can measure reflectance PPG heart rate, SpO2, adjust the characteristic points of the PPG waveform in a large range and in detail. Including Systolic Peak (SP), Dicrotic Notch (DN), Diastolic Peak (DP), etc., elastically conduct specific tests.

Simultaneously send out ECG and PPG signals, adjust the time difference (PTTp and PTTf) between the two signals, and verify the accuracy of the blood pressure algorithm of DUT.

Simulates the R curve of DUT to verify the SpO2 and perfusion index PI values.

Saves test parameters of different test items for integrated testing to reduce human errors.

Playback raw data waveforms and reproduce clinically recorded or customized waveforms.

Supports automated testing, using software to control the entire testing process, and can also manually edit auto-sequence for testing.

Highlights

Wide Testing Range to Meet Different Types of Finger Testing Needs

Wide range of light intensity adjustment and dynamic light detection functions
Simulates signals of different fingers, built-in reflectance table

Simulations that Are Closer to Time and Real Situations

Built-in 14 types of ambient light signal superposition　
Provides respiratory variation simulations

Customize or Load the Blood Oximeter R Curve for Quick Verification

Quickly establish the R curve of the DUT to test the quality consistency and accuracy of the oximeter
Provides R-curve examples of major brand manufacturers as reference for development

Software Development Kit for Flexible Development of Testing Program

Users can develop automated testing software according to their needs to control the testing process, reducing the burden of repetitive operations during extensive testing

Product Specifications

Parameters		Specifications
Heart Rate	Setting Range	10 ~ 300BPM
	Minimum Step Size	1BPM
	Accuracy	±1BPM
LED DC Level Reference Output	Setting Range ⁽¹⁾	30 ~ 3000mV
LED DC Level Reference Output	Minimum Step Size	1mV
LED AC Level Reference Output	Setting Range ⁽¹⁾	0.75 ~ 30mV
LED AC Level Reference Output	Minimum Step Size	0.01mV
PI (AC level / DC level) ⁽²⁾	Setting Range	0.025% ~ 30% (AC / DC, varies with AC or DC level)
PI (AC level / DC level) ⁽²⁾	Accuracy	NA
LED1 Absolute Irradiance (100%)^§	Intensity	2.36mW / m^2
LED1 Absolute Irradiance (100%)^§	Accuracy	±15%
LED2 Absolute Irradiance (ambient light)^§	Intensity	0.25mW / m^2
LED2 Absolute Irradiance (ambient light)^§	Accuracy	±15%
LED Scan Rate	Rate	50 ~ 40kHz (Normal mode / Standalone mode) ⁽³⁾ 10kHz (Raw data mode)
LED Scan Rate	Accuracy	±5μs
PD Sample Rate	Rate	250kHz (Single channel)
PD Sample Rate	Accuracy	±5μs
PD Response Time	Rising	1μs Typical ⁽⁴⁾
PD Response Time	Falling	1μs Typical ⁽⁴⁾
SpO₂ % SpO₂ parameter specifications ⁽⁵⁾	Setting Range	1% ~ 100%
	Minimum Step Size	1%
	Accuracy	91% ~ 100%: ±1% + specified accuracy of the DUT 81% ~ 90%: ±2% + specified accuracy of the DUT 71% ~ 80%: ±3% + specified accuracy of the DUT Below 70%: with unspecified accuracy
MCX LED Voltage	Amplitude	AC level x 100
MCX LED Voltage	Accuracy	±5%
§Data Collection Method: To connect the spectrometer with a 2-inch integrating sphere, and fix the integrating sphere on the DUT to measure the absolute irradiance of the LED of the DUT. Note: (1) The AECG100 and SECG 5.0 AIO test systems adjust AC/DC output according to the linearity of LED electro-optical conversion. (2) The PI value may vary according to the different calculation methods of each manufacturer. (3) When used with the AECG100, it supports normal mode, standalone mode, and raw data mode; when used with the SECG 5.0 AIO, only the raw data mode is applicable. (4) PD response time varies with the light intensity of the DUT. (5) The SpO₂ parameter specifications apply to SpO₂ Test Mode.

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Product Introduction

SpO₂ Module

Part No.	Image	Description	Quantity
100-AE00007		Model No.: PPG-2TF-660 Model Name: Transmittance SpO₂ module (two MCX (RF) male to BNC cables included)	1

Compatible Products

Part No.	Image	Description	Quantity
100-AE00001		Model No.: AECG100 The main console unit for ECG testing.	1
100-EC00002		Model No.: SECG 5.0 AIO Model Name: Multi Vital Sign Simulator The standalone ECG simulator with 12 leads (RA, LA, LL, N, V1 - V6) output for ECG performance tests.	1

Optional Accessories

Part No.	Image	Description	Quantity
K29-0300601		MCX (RF) male to BNC cable (30cm)	1

Optional Calibration Service and Warranty Extension

Part No.	Description
YY0007	Model No.: C3 Provides (3) years of calibration service coverage. WhaleTeq equipment can be calibrated to original performance on the basis of (1) year interval.
YY0008	Model No.: R3 Extends the limited warranty from (1) year to (3) years.