Keito K7
Technical and maintenance
Manual
INT.022EN.02
Revision “I”
24/09/2010
Page 17 of 43
1.4 - Frequency adjustment
With this option the operating frequency of the height system can be changed to improve the measuring system. Once in
this option, you can change the frequency with the keys
A
and
F
of the terminal. Pressing
A
the frequency will be increased
and pressing
F
will be decreased. The default frequency is 50,00 kHz.
Important notes:
·
This adjustment can only be done with the consent of Keito’s technical Department.
·
This adjustment must be done with the help of an oscilloscope so that you can see how the quality of the
system signal changes as long as the frequency is modified.
Let us suppose that we want to set the frequency to 52,29 kHz.: Proceed as follows:
Key
Function to execute or select
Terminal Display
'Z' or 'ESC' Goes to option 0 of the main menu.
MAIN MENU:
0-SYSTEM ADJUSTMENTS
SPACE=NEXT
ENTER=SELECT
1
Select the height system adjustments
SUB-MENU HEIGHT:
1.0-RESET
SPACE=NEXT
ENTER=SELECT
4
Option 4 allows the modification of the frequency of the system.
FREQUENCY: 50,00 kHz
DIVISOR: 160
COUNTER: 0
Cod.Err..: 3
A...A...A
With the key A of the terminal, increase the frequency until you
get the desired one. As long as the frequency is increased, the
divisor counter will decrease.
FREQUENCY: 50,31 kHz
DIVISOR: 159
COUNTER: 0
Cod.Err..: 3
ENTER
When pressing ENTER the new value is saved and the program
goes back to option 4 of the height adjustment sub-menu.
SUB-MENU HEIGHT:
1.4-FREQUENCY ADJUST
SPACE=NEXT
ENTER=SELECT
