RenNuo Bioinformation Science and Technology Co. LTD RN141 Manual Do Utilizador
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Transportation environment: -40°C°C~55°C, Relative humidity: 10%~95%
Storage environment: -40°C~55°C, Relative humidity: 10%~95%
2.5.2 Technical parameter
Name Headset type ECG recorder
Model RN141
Channel Single channel
Technical parameter Dynamic input range:
For superimposed ±300mV DC bias voltage, with the change of the
differential mode voltage at the speed of 125mV/s, amplitude modulation
of 6mV (when the gain is set to be 10mm/mV), the recorder should have
the ability to respond and display. The magnitude of the time-varying
output signal is equivalent to the input change of no more than 10%.
Input impedance:
For the 10HZ sine wave signal, the input impedance should be greater
than 10
MΩ. This requirement should be met within the range of ±300mV
DC bias voltage.
Common mode rejection:
For the sinusoidal signal under the network power supply frequency, the
common mode rejection should be at least 60dB, for the signal under 2
times network power supply frequency, the common mode rejection
should be at least 45dB.
Systematic noise:
When the input terminals connect each patient's electrode in series
through a resistance and capacitance network in parallel including 51kΩ
resistor and a 47nF capacitor, the internal noise equivalent to the input
should not exceed 50μV (peak - valley value) within 10s at random.
Gain accuracy:
When the gain is set to be 10mm/mV, the test signal of the output signal
equivalent to input, the maximum amplitude error is ± 10%.