Technical Specifications
| LDC | |
|---|---|
| Peak LDM current | up to 400 ANOTE 1 |
| Max bias current | 50 A |
| Max LDM voltage | up to 400 V NOTE 1 |
| LDM average power | ≤ 600 W |
| LDM working pulse length | 40 ÷ 100,000 µsec |
| Repetition rate | 0.1 Hz ÷ 10 kHz |
| Instability of the current amplitude | ≤ 1 % |
| Power supply of pilot laser | 5 V & 200 mA |
| TEC1 & TEC2 (Peltier Elements) | |
| Range of the temperature control | – 50 ÷ 120 °C |
| Discreteness of the temperature control | ± 0.01 °C |
| Max voltage | 22 V |
| Max current | 2 × 8 A |
| Additional Temperature Interlock TEC3 | – 50 ÷ 120°C |
| PHOTO-DETECTOR | |
| Linear range of the LDM photocurrent measurements | 0.01 ÷ 160 µA |
| Scale factor of light power/current conversion | 0 ÷ 100 W/µA |
| TRIGGER | |
| External triggering pulse amplitude Utrig_in (Impedance = 1 kΩ) | 5 V ± 20% |
| External triggering pulses duration | > 2 μsec |
| Output trigger pulse amplitude Utrig_out (Impedance ≥ 1 kΩ2) | 5 V ± 20% |
| Output trigger pulse duration | 5 μsec |
| Adjustable range of output trigger delay | 0 ÷ 3900 µsec |
| GENERAL | |
| Dimensions | 134 × 92 × 40 mm3 (see dimensional drw.) |
| Storage temperature | – 30 ÷ + 60°C |
| Operating temperature | + 5 ÷ + 45°C |
| Ambient humidity | < 98% |
| NOTE 1. Maximum values of LDM current and voltages depends on modification of the LDC-series board. For LDC-4-25V-100A maximum voltage and current are 25V and 100 A correspondingly. | |
LDC-4 Connectors
LDC-4 can use 3 separate power supplies for:
- Laser diode module, voltage depends on LDM parameters
- Thermo-electric controllers, 24 V.
- PCB power supply, 12 V.
If TEC 24 V power supply (J201, J202) is used, 12 V for PCB will be provided by onboard converter from 24 V. In this case connection of separate 12 V power supply (J1) is not necessary.
J2, J7, WF-3 type. Connectors for fans.
| Pin | Functionality |
| 1 | GND |
| 2 | +12 V (+24 V)* |
| 3 | NC |
*Can be chosen by onboard jumper resistors (R1 closed, R2 opened – 24 V, R1 open, R2 closed – 12 V).
J3, WF-4 type. Connector for indicator LEDs.
Power LED shows, that PCB is switched on and indicates current mode of operation. Blinking red/green light correspond to normal operation LDC board. Continuous red light indicates that LDC is booted in programming mode.
Ready LED indicate that laser diode module (LDM) is ready to operate (continuous green light). If Ready LED is switched off LDM operation is blocked by some of the interlock.
| Pin | Functionality | ||
|
1 |
Power Green Anode |
3 |
Ready Anode |
|
2 |
Power Red Anode |
4 |
Ready Cathode |
J4, WF-4 type. External interlock connection. If circuit is closed (Lock pin pulled to ground) interlock value is switched.
| Pin | Functionality |
| 1 | GND |
| 2 | Lock1 |
| 3 | GND |
| 4 | Lock2 |
J5, WF-2 type
Controlled from software DC output. (12 V or 24 V, depending on PCB connection version).
| Pin | Functionality |
|
1 |
GND |
|
2 |
Controlled 12 V (24 V) output |
J6, BH-20 type. Laser board controller input and output signals.
Output signals:
- DAC1 – analog output for controlling of output voltage of External LDM Power Supply Unit
- Trigger out – output trigger signal for synchronization of external device
Input signals:
- Delay – setting of the delay value between end of pump pulse and output trigger by external analog signal
- Trigger In – first external input trigger signal for synchronization from external device
- Trigger In2 – second external input trigger signal for synchronization from external device
- PhD1 – input signal from external photodiode
- Ready LBC – external interlock signal
| Pin | Functionality |
| 1 | 12 V |
| 2 | Power GND |
| 3 | 24 V |
| 4 | Power GND |
| 5 | HV OK |
| 6 | Delay |
| 7 | DAC 1 |
| 8 | Pulse terminator |
| 9 | PhD1 Cathode |
| 10 | Ready LBC |
| 11 | 5 V |
| 12 | Signal GND |
| 13 | Trigger out |
| 14 | Trigger in (A) |
| 15 | Signal GND |
| 16 | Trigger in (C) |
| 17 | Clock |
| 18 | Data |
| 19 | Pilot- |
| 20 | Pilot+ |
J8, BH-10 type. RS-232 Connection to PC
|
Pin |
Functionality |
| 1 | NC |
| 2 | NC |
| 3 | TxD |
| 4 | NC |
| 5 | RxD |
| 6 | NC |
| 7 | NC |
| 8 | NC |
| 9 | GND |
| 10 | NC |
J201, Keystone 1287 type
+24 V external power supply for Thermo-electric controllers (TEC). Through Internal PCB 24 V – 12 V converter also provides 12 V for PCB power supply.
| Pin | Functionality |
| 1 | +24 V |
J202, Keystone 1287 type
Power GND pin of +24 V external power supply for Thermo-electric controllers. Through Internal PCB 24 V – 12 V converter also provides 12 V for PCB power supply.
| Pin | Functionality |
| 1 | Power GND |
J302, 7461086 type
GND Power pin of external LDM power supply.
| Pin | Functionality |
| 1 | Power GND |
J303, 7461086 type
Connects to LDM anode and to LDM power supply + pin simultaneously.
| Pin | Functionality |
| 1 | LDM Anode and +pin of LDM Power Supply |
J304, 7461086 type
Connects to LDM Cathode.
J500, BH-16 type
TEC Controller connectors. Provides connection of 3 external Thermo sensors (TS) and 2 outputs for external Peltier elements (TEC1 and TEC2). TEC1 and TEC 2 outputs are duplicated at J501 and J502 connectors correspondingly.
| Pin | Functionality |
| 1 | TEC1+ |
| 2 | TEC1- |
| 3 | TEC1+ |
| 4 | TEC1- |
| 5 | TEC1+ |
| 6 | TEC1- |
| 7 | GND |
| 8 | TS1 |
| 9 | TS3 |
| 10 | TS2 |
| 11 | TEC2- |
| 12 | TEC2+ |
| 13 | TEC2- |
| 14 | TEC2+ |
| 15 | TEC2- |
| 16 | TEC2+ |
J501, B2P-VH type
TEC1 output (up to 22 V, controlled from software); it’s duplicated @J500 connectors, pins 1-6.
| Pin | Functionality |
| 1 | Peltier + |
| 2 | Peltier – |
J502, B2P-VH type
TEC2 output (up to 22 V, controlled from software); it’s duplicated @J500 connectors, pins 11-16.
| Pin | Functionality |
| 1 | Peltier + |
| 2 | Peltier – |
VLC-3 Software