OC1135 Programmable Multifunction Counter
Operator’s Manual
7
4
SCALE and dSCALE
The input frequency can be scaled to the required reading at the display by the multiplying and the
dividing free programmable constants:
SCALE
Multiplicative constant
dSCALE
Dividing constant of the SCALE.
4.1
EXAMPLE – QUADRATURE COUNTER
Task
:
A resolver with 14400 pulses/revolution is used. The display has to show 2.000 after one
revolution.
Solution
: Set
quAd
in the menu.
SCALE Calculation:
2.000 : 14400 = 0.000138888 = 1.38888 : 10000
SCALE Selection:
1.3888 adjust in Menu Step
SCALE
SCALE Division:
Select 10000 in Menu Step
dSCALE
Decimal Point:
Select CC.ddd in Menu Step
OrdEr
Terminate with the key
SET
.
5 H-TEST
and
CALIBRATION
Service and calibration Submenu is available. To enter it, press the key MENU during power-on and hold
it pressed until the display shows
HtESt
.
The key
MENU
advances the test. The display segments will be tested, the Set Points SP1 and SP2
activated and the frequency calibrating constant
CL
can be set. The
HtESt
can be terminated only by
switching-off the supply.
Calibrating Constant CL:
This is a correction constant selectable from -99 to 99. The number at the
display increases as long as the key MENU is kept pressed. When at the same time also the key ACK is
pressed, the number starts decrementing. The CL value of 10 corresponds approx. to 2 increments of
the least significant display digit.
Display = Input x Scale : PrESE
