Set Up Modification; Current / Charge Selection - VYGON PLEXYGON Manual De Usuario

2.3

Set up modification

To modify the set up of the stimulator, keep the µS/MODE button
µs
pressed for 2 sec. Once entered in the menu, the modifiable parameter
is pointed: then it' s possible to change the setting by rotating the knob
MODE
clockwise or anticlockwise. Pressing again the µS/MODE button, the
selection is confirmed and the next parameter is selected.
The sequence of the selection is the following:
Frequency:
Duration:
Measure unit:
Sound:
A further push of the MS/MODE button allows to go out from the options
menu and return to the normal functioning .
During the functioning of the stimulator, it is possible to modify the duration of
the impulse keeping constant the charge supplied (expressed in nC) with a
pressure and an immediate release of the µS/MODE button. If the visualisation
is in mA, the current will change in order to keep constant the charge supplied
(for example: duration 300µS - current 0.5 mA; modified duration to 100µS -
current to 1.5 mA; modified duration to 50µS - current to 3.0 mA)
2.4

Current / charge selection

The knob on the upper right side of the front panel allows
adjustment of the current or the charge supplied by the stimulator
at any impulse .
At each rotation step, the selected current will change by 0 . 1 mA
or 0 . 0 2 mA respectively if its value is bigger or lower than 0 . 5 mA;
turning the knob clockwise the current increases, turning anticlockwise the
current decreases. During the fine adjustments (under 0,5 mA) the symbol "P"
(Precision) appears on the display.
NOTE: If the visualization in "nC" has been selected, the charge variation step
is equal to the product of the current multiplied by the duration of the impulse,
corresponding then to the values indicated in the table here below:
Table 1: Variation steps of the charge Q (nC) for different durations of the
impulse
Q  150 nC
Q  150 nC
Q  75 nC
Q  75 nC
Q  25 nC
Q  25 nC
Selectable options: 2 - 1 - 4 Hz
Selectable options: 300 - 50 - 100 µS
Selectable options: mA - nC
Selectable options: on - off
300 µS
30 nC
6 nC
-
-
-
-
100 µS
-
-
10 nC
2 nC
-
-
5
50 µS
-
-
-
-
5 nC
1 nC