Operation Instructions
5-4
options such as 0.05Hz, 0.10Hz, 0.20Hz and 0.5Hz.
4) [Lowpass Filter]: [75Hz], [100Hz] ,[150Hz] and [off]
Lowpass filter is used to limit the bandwidth of the input signal and reduce the signal with the frequency
higher than the set cutoff frequency. The cutoff frequencies the user can select are 75Hz, 100Hz,150Hz
or off.
Among these four filter modes above, [DFT FILTER] has the greatest influence on the
waveforms imputed. Higher level could better filter out low frequency interference like
movement, but ECG signals would have more distortion like ST segment too high, and
therefore only the experienced clinicians can use the high level of drift filter. The [DFT
FILTER] should be set as [0.05Hz] to get the undistorted ECG signals. [AC FILTER] is used to
resist the interference of the AC power supply, 50Hz for 220V and 60Hz for 110V. [EMG
FILTER] is used to resist the interference on the ECG signals caused by strong muscle
vibration. In the process of clinical use, the clinicians will ask the patients to relax first, so this
option is usually set as “off”. [LOWPASS FILTER] is a filter mode that the signals below a
certain frequency (75Hz, 100Hz, 150Hz and off) can pass through, and it is suggested that it be
set as 100Hz.
This instrument is detection equipment instead of diagnosis equipment. It is suggested that
clinicians conduct the detection and analysis according to actual situation and their clinic
experience.
5) [Lead Sequence]: [Standard], [Cabrera]
Lead Order: as shown in the following table
6) [Rhythm Lead Type]: [1 channel] and [3 channel].
When [1 channel] is selected, only any one channel of the [І], [II], [III], [aVR], [aVL], [aVF], [V1],
[V2], [V3], [V4], [V5], [V6] of [Rhythm Lead 1] can be set as the rhythm lead; when [3 channel] is
selected, any one channel of the [І], [II], [III], [aVR], [aVL], [aVF], [V1], [V2], [V3], [V4], [V5],
[V6] of [Rhythm Lead 1], [Rhythm Lead 2] and [Rhythm Lead 3] can be set as the rhythm lead.
Under the rhythm working mode, when the rhythm mode is set as [1 channel], the ECG record
process will record and output the rhythm waveform for 60 seconds of the rhythm lead selected in
the [rhythm lead 1]; when the rhythm mode is set as [3 channel], in the ECG record process will
record and output the rhythm waveform for 60 seconds of the three rhythm leads selected in
[rhythm lead 1], [rhythm lead 2] and [rhythm lead 3].
7) [Rhythm Lead 1]: select any one of the [І], [II], [III], [aVR], [aVL], [aVF], [V1], [V2], [V3], [V4], [V5],
[V6] as the rhythm lead.
8) [Rhythm Lead 2]: select any one of the [І], [II], [III], [aVR], [aVL], [aVF], [V1], [V2], [V3], [V4], [V5],
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