The Jabbals equipments have been designed in a simple and user friendly manner.
The controls are few and can be easily adjusted
to achieve the best performance.
CRT FRONT PANEL CONTROLS
Adjusts the brightness of the CRT display.
FOCUS & ASTIGMATISM
Adjusts the clarity of the CRT from wide or thick trace to
narrow or fine trace/wave pattern.
Adjusts the position of trace/wave pattern in up and down movement.
Adjusts the position of trace/wave pattern in left-to-right movement.
Adjusts the Time base of the wave pattern.
The waveform pattern can be contracted and expanded
along the horizontal or time axis.
Adjusts the Trace line in parallel with the horizontal line of the Graticule.
Determines the scale factor for reading the test voltage on the CRT display.
Surge Test Voltage applied = No. of Vertical divisons (X) VOLTS/DIV selected.
No. of divisons travesed by Surge test wave = 4
VOLTS/DIV Selected = 500V/DIV
SURGE TEST VOLTAGE APPLIED = 4 X 500 = 1000 Volts
SET TEST VOLTAGE
This control when rotated clockwise will adjust the
output test voltage from 0 to 100% of the equipment's maximum rated output Test voltage capacity.
TEST SELECT SWITCH
This Test Select switch determines which of the test leads are HOT or ENERGIZED
and which are at Ground potential. NOTE: The Windings connected to the corresponding Test leads
will be compared with each other and resultant wavepattern will be displayed on the CRT.
This control is only available with Automatic Surge Tester with Go/No-Go test.
This control helps in setting up the % variation difference wrt to Master winding.
NOTE: The sensitivity should be kept at 0-50 for Fan stators and around 0-70 for fridge stators.