VACS:Projects:Software:LPS:Display
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Revision as of 20:29, 18 October 2006
Contents |
Overview
Power Supply Control
- Voltage
- Current limitation
- Supply ON/OFF
- Ramp up time
- Calibration voltage
- Calibration current
Global Control
- Fan speed
Interface
The LPS interface is composed of a 2x16 LCD display, a set of 5 buttons and 2 selection wheels.
- Voltage (V)
- Current (A)
- Power (W)
- Max, min, mean current
- Max, min, mean voltage
Display on 2x16 LCD.
123456789ABCDEF
1 +12.00V 250mA 2 -11.85V 125mA
3 +5.034V 2.34A 4 -3.033V 1.12A
+12.00V -11.85V +5.034V -3.033V
1:12V 3:-12V 2:5.0V 4:-3.0V
rotateur 1 -> Voltage +/- rotateur 2 -> Current +/-
1 +12.00V 250mA
I-Max 490mA
I-Min 125mA P-Max 2.34W
1 +12.00V 250mA
I-Limit 800mA
Voltage Overview
The voltage overview gives a quick overview of the different output voltages currently selected for the power supplies.
1:12V 3:-12V 2:5.0V 4:-3.0V
1:12V 3:OFF 2:OFF 4:-3.0V
Mode Selection
123456789ABCDEF | ||
|
Voltage and Maximum Current Control
123456789ABCDEF +12.03V 250mA I-Limit 800mA
- left button
- voltage selection
- right button
- current limitation selection
- Next button
- exit the "Voltage and Max current control"
Voltage and Current Calibration
Calibration is necessary to increase the precision of the laboratory power supply. It is controlled by the ATmel microcontroller.
- Voltage calibration is achieved by measuring the power supply voltage with a multimeter and entering the measured value in LPS.
- Current calibration is achieved by measuring the output current while the output is under some load. The load has no importance.
The display is the following:
123456789ABCDEF Calibrate 1 +12.03V 250mA
The left button is used to calibrate the voltage and the right button to calibrate the output current.