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SECG 5.0 AIO | User Manual
01-
Select waveform signal types and parameters
02-
Select add-
on signals (DC offset, pacing, noise….)
03-
Select the output lead electrode
04-
Detailed parameters of output waveform
05-
The real time display of output waveform
06-
Function tap (Waveform, Special Function and Assistant)
07-
Click to play the waveform with preset parameters and options
Description of Functional Groups
2.6.1 Signal Parameters
Signal Type
Select the types of output waveform. Please refer to Table.1 for details.
Frequency
The frequency can be set in either Hz or beats per minute (BPM). Changing one will
automatically change the other to match. For pulse waveforms (rectangle, triangle, ECG), the
frequency can also be referred to as the pulse repetition rate, or heart rate. For some pulse
settings the frequency is limited to prevent overlapping pulses.
Amplitude
Adjusts the waveform amplitude from 0 to 20mV at a 0.01mV resolution. For all waveforms
the amplitude represents the peak to peak value. For example, for a 1mV sine wave the
actual waveform varies between +0.5mV and -0.5mV. This correlates with testing
requirements in standards.
Pulse Width
Applies to rectangle, triangle and exponential
pulse waveforms only. For the rectangle, pulse
width is defined as the time between crossing
the 50% point in rising and falling edges of the
pulse
2
. For triangle pulses, the setting matches
the base of the triangle pulse. For exponential
pulse, the set pulse width is time constant. Pulse
width can be set to down to 2ms.
2
To minimise ringing due to ECG notch filters, rectangle pulses have a rise time of 1ms. This means that
a 20ms rectangle pulse will actually have a 21ms base and a 19ms at the top of the pulse. This definition
ensures that the pulse integral matches the setting, e.g. a 3mV 100ms pulse will have an integral of
300µVs.
