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2.1 Features
• Operation of the product is simple and convenient.
• The product is small in volume, light in weight (total weight is about 800g
including batteries) and convenient in carrying.
• The instrument can be used under AC&DC, with the lithium rechargeable
battery inside, and it will record eighty ECG waveform persistently under
the best DC conditions.
• Voltage indication will be displayed when power on.
• Classification: internal electrical power source, CF applied part.
• EMC complies with the requirements of IEC60601-1-2:2001
(refer to the appendix 2).
2.2 Major applications and scope of application
This product is single channel,12 leads electrocardiograph ,can be widely
applied in ECG check-up under different circumstances such as in hospital
consultation, doctor’s diagnosis, physical check-up,social medical
organizations etc. it can implement real time continuous records of clear
and exact single-channel ECG waveform using thermo sensitive printer
at the same time. waveforms also can be frozen at any time. It has
manual and automatic modes to be chosen and Chinese/English operation
interface,it is easy to be used.
2.3 Environment requirements
a. Ambient temperature: +5°C~+35°C;
Transportation and Storage Temperature: -40°C~55°C.
b. Relative humidity: <95% (without condensation);
Transportation and Storage humidity: ≤95%.
c. Power:
POWER ADAPTOR: Input AC: 100-240V, 50/60Hz;
Output DC: 12V;
DC: 7.4V rechargeable battery;
The instrument could normally work for more than 4 hours under DC
supply.
d. Barometric: 860hPa~1060hPa.
3 PRINCIPLE AND CAUTION
3.1 Principle of measurement
The equipment is constituted by power source system, signal gathering and
processing, and controlling system etc. The power source system converts
the Alternating Current or battery volt to the stable Direct Current which the
equipment needs, meantime, it completes the charge of battery and the
conversion of alternating current and direct current. The signal gathering and
processing part is responsible for the clustering of input signal, digital filter
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