Functions of the SCENAR

I. Intensity is the number of stimuli in a batch. At Int = 1 a batch includes 1 stimulus. Stimulus batch frequency is set by F parameter on the screen.
Stimulus batch frequency doesn’t change with change of any other parameter. You can see 3 oscillograms below.
Fig.1 (Int=1, F=90Hz) Fig.2 (Int=5, Gap=5, F=90Hz) Fig.3 (Int=5, Gap=50, F=90Hz)
II Gap is the interval (time delay) between the end of the 1st phase of the previous stimulus and the beginning of the 1st phase of current stimulus.
If Gap is rather large, then the second phases of all stimuli have enough time to end (see Fig.4).

If Gap is rather small, then the second phases of all stimuli except for the last one, have not enough time to end. So, they turn out to be cut, incomplete (see Fig.5).

III. Dose (for Diag=1) is the adaptive criterion for delivered stimulation on this site.
In the Fig.6 there are 2 cases of delivered dose (yellow circle):
1. Fast dynamics – fast dose delivery: initial/ current (ongoing) reaction – red, adaptive threshold – blue.
2. Slow dynamics – long dose delivery: initial/ current (ongoing) reaction – pink, adaptive threshold – green.

IV. Zero (Null) is the time point when the speed calculated as V = (Rt-Ro)∙100%/(Ro∙t),
Ro – initial reaction,
Rt – current reaction,
t – time of the point treating,
V – reaction speed, will become less than 1%/sec (or negative).
Exact formula for the speed is V = (Rt-Ro)∙128%/(Ro∙t).
This way is easier to calculate for microcontroller, and 100% is more convenient for calculating in mind. If the speed is displayed on the screen as «–» (which occurs rarely), it means that current (ongoing) reaction is less than the initial one.
V. Current (ongoing) reaction changes irrespective of
- whether diagnostics is ON or OFF
- whether Dose or Zero is reached
So, for example, after Zero is reached, increase of the current (ongoing) reaction may result in speed increase up to 1 (instead of 0 already reached).
VI The term "Diagnostics" should not be perceived literally. This mode is used for optimization of therapy procedures (dosage). Diagnostics/dose is based on dynamic properties of signal.
Diag 1 – adaptive dose + integrated zero
Diag 2 – zero and dose together, differential dose/zero.
That is for Diag 2 the speed is counted relatively to the reaction on previous second. Dose appears after 3 seconds of non-positive speed/dynamic (zero or negative).Diag 2 mode can be treated as research mode.
In technical (physical) aspect initial reaction is length of the 2d phase’s first pulse (see picture, here IR is 140us or 0.14 ms).
The difference between initial reaction and current (ongoing) reaction is that initial reaction is average parameter in 1st second and current (ongoing) reaction is average parameter in current second.

VII Power Influence
The device has scale of powers from 1 to 250 with step. We set comfortable power (energy) level individually at the beginning of the session. For some individuals it can be 10, for others 60 or more. In some cases like emergency conditions or severe pain we need to set high energy level up to 250.
VIII Frequency modulation (FM)
Wide range of frequencies 15-350 Hz Low frequencies 15-60 Hz applies for degenerate conditions, high ones (120 and more Hz) - for inflammatory. High frequency applies for acute pain relief also, low ones - for chronic or uncertain pain or complaint.
If the frequency modulation turned on, the device generates different frequencies: from 30 Hz to 120Hz to 30 Hz to 120 Hz etc.
IX Amplitude modulation (AM)
Preset Power Level/Minimal Power Level Ratio by time (in seconds) 5:1, 4:1, 3:1, 2:1 or 1:1. During acute pathologic process it is recommended to use 3:1 AM Mode and then turn on 1:1 Mode. During chronic process we start from 3:1 AM Mode and then use 5:1.
X Swing modes (combined modulations).
We use different types of Swing Modes if we don't have ability or time to select suitable regimens for individual.