User guide

ECM-QB User’s Manual
24 ECM-QB User’s Manual
2.4.7 LCD Inverter Connector (CN3)
Signal
PIN
+12V
1
GND
2
BLKTEN_OVL
3
BRIGHT
4
+5V
5
Variation Resistor
(Recommended: 4.7KΩ, >1/16W)
Note:
For inverters with adjustable Backlight function, it is possible to control the LCD brightness
through the VR signal controlled by VR1.
2.4.7.1 Signal Description – LCD Inverter Connector (CN3)
Signal
Signal Description
BRIGHT
Vadj = 0.75V ~ 4.25V (Recommended: 4.7KΩ, >1/16W)
BLKTEN_OVL
LCD backlight ON/OFF control signal