Sacher Lasertechnik Pilot PC - Block Diagram

Sacher Lasertechnik
Group
User Manual Laser Diode Controller PilotPC 3
Block Diagram
Simplified Laser Current Control Block Diagram
As shown in the block diagram the laser current source is controlled by
the uController. Current control loop and power control loop is build in
hardware. Only the set values are given by special DAC units. The
uController also has several supervising functions like
- Diagnostic
- Monitoring
- Protection
Some supervising features are
- Wiring resistance measurement
- 16Bit LD Voltage measurement
- Softstart
- Laserpower calculation
14 Bit LOW Noise
DAC
12 Bit LOW Noise
DAC
LD Current
Control
LD Power
Control
Compliance
Voltage
Control
uController Unit
Limit Open Load
Detection
Polarity
Control
PD Amplifier
LD Current
Source
16 Bit High Speed
ADC
I/P-Mode