PTE-50-CET
Sheet 21
3.3.2. PHASE
SECTION
This is situated to the right of the unit and is perfectly
identified. It contains all the control knobs, keys, and
LEDs necessary for the operator to use the functions in
this section.
Figure 9:
Phase Angle Selection
3.3.2.1. CONTROL KNOBS AND PRESS KEYS
a) Selecting the digit to be used
This key works in a sequential way and it is associated with 3 LEDs located
above this press key. This allows the operator to select the output in a fine or
course regulation, by changing the digit to be adjusted.
The following resolutions can be obtained:
•
1
digit.
•
10
digits.
•
100
digits.
When pressing this key for more than 2 seconds, it will block the rotating pulse generator,
not allowing any modifications to the phase angle selected.
b) Rotating control knob
This is a rotating pulse generator and has step by step sensation. The values
can be increased or decreased by turning this control knob clockwise or anti-
clockwise by one digit per step, according to the selected digit weight as
described previously. This knob has no end and can be controlled at any
speed.
However if the control knob is turned very fast the value will change at a maximum rate of 1
digit per second.
