KIT 79879-3 Digital View, KIT 79879-3 Datasheet - Page 26

• Manufacturer Part Number: KIT 79879-3
• Description: Display Development Tools CONTR KIT SVH-1920 22.5"NL192120AC25-02
• Manufacturer: Digital View

Specifications of KIT 79879-3

• Product Category: Display Development Tools
• Rohs: yes

USING THE CONTROLLER WITHOUT BUTTONS ATTACHED
This is very straightforward:
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Summary: On CNC1 the only pins that are used are for On/Off and Brightness (if controller mounted inverter is used). On
CNC1 the pins are for momentary type buttons so it doesn’t matter that no buttons are attached.
INVERTER CONNECTION
There are potentially 3 issues to consider with inverter connection:
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Please read the following sections for a guide to these issues.
Inverter Power: As per the table for CNB1 pin 1 is ground and pin 2 provides 12V/24V DC. This should be matched with the
inverter specification: see table.
Remark: For higher power inverter, more current (for 12V/24V) can be taken from CNA1 pin 1.
Enable: This is a pin provided on some inverters for On/Off function and is used by this panel controller for VESA DPMS
compliance. If the inverter does not have an enable pin or the enable pin is not used then DPMS will not be operational. Pin 3
should be matched to the inverters specification for the ‘enable’ or ‘disable’ pin.
Further, jumpers JB2 & JB3 should be set to match the inverters specification for the enable pin power and High or Low setting:
see table.
Brightness: There are various methods for brightness control and it is important to consider the specifications for the inverter to
be used. Generally the situation is:
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CNB1 pins 4 & 5 are available for connecting to an inverter or circuit where VR control is supported.
This can then be matched with function controls connected to CNC1 pins 4 & 3 or 5: see table.
APPLICATION NOTES
Firstly setup the controller/display system with the buttons. With controls attached and display system active make any
settings for colour, tint and image position as required then switch everything off.
Remove the control switches, the 12-way (CNC1) cable.
Use a jumper or similar to connect pins 1 & 2 on CNC1, this will fix the board On.
Refer to inverter specifications for details as to fixing brightness to a desired level, this may require a resistor, an open
circuit or closed circuit depending on inverter.
Power
Enable
Brightness
CNB1
CNB1
Brightness can control by using a resistor or VR (Variable Resistor).
Brightness controlled by adding a circuit such as PWM (Pulse Width Modulation).
No adjustment of brightness is possible.
CNB1
CNC1
PIN
PIN
Ref
JB2
JB3
PIN
PIN
1
2
3
4
5
3
4
5
Inverter enable voltage
Inverter control
DESCRIPTION
DESCRIPTION
DESCRIPTION
DESCRIPTION
+12V/+24VDC
Purpose
VR WIP
VR WIP
Ground
Enable
VR A
VR A
VR B
1-2 H = 12V/24V, 2-3 H = 5V (Vcc), OPEN H = open collector
1-2 H = On, 2-3 L = On
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Note