Electronic features for 51nano electronics type HP
| Electronics Type HP | |||||||
|---|---|---|---|---|---|---|---|
| Supply voltage | +12 ± 0.5 V | ||||||
| Current consumption max.* | 260 mA | ||||||
| Max. modulation frequency analog | 1 Hz | ||||||
| Max. modulation frequency TTL | 300 kHz | ||||||
| Laser output power potentiometer | < 1 - 100 % | ||||||
| TTL modulation logic: TTL high | Laser ON | ||||||
| TTL or analog input: open or low | Laser OFF | ||||||
| Analog control voltage Pmin to Pmax | 0 ... 2.5 V | ||||||
| Modulation input resistance [Ohm] | 9 k | ||||||
| Cable Type | 3x AWG 26 C UL | ||||||
| * Typical value. Depends on laser diode. | |||||||
Pin-out
Circular connector Lumberg SV40 (male, IEC 61076-2-106) for power supply and external modulation (pins Uanalog and UTTL).
Cable shielding and casing are connected and are galvanically isolated from the laser diode and the electronics.
| Cable | Pin | Function | |||||
|---|---|---|---|---|---|---|---|
| black | 1 | GND | |||||
| red | 2 | + 12 V | |||||
| 3 | n.c. | ||||||
| 4 | n.c. | ||||||
| shield | case | functional earth | |||||
Modulation
The laser has two AND-wired modulation input channels, Uanalog and UTTL.
Connecting analog voltage
The input for analog modulation allows applying an analog voltage Uanalog in a range from 0 V to 2.5 V) which allows a linear control of the laser output power from approximately zero up to the maximum power given by the potentiometer setting.
Timing diagram
The laser is OFF in case of an open modulation input. If only one modulation input channel is used, the other has to be set to +5 V.
The voltage Uanalog at analog modulation input linearly controles the laser output power between ≤1 % and 100 % of the optical power set with the potentiometer.