d2:laser_servo
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d2:laser_servo [2019/09/06 17:16] – [Right Side Panel] Michael Radunsky | d2:laser_servo [2020/03/16 22:21] – [Description] Michael Radunsky | ||
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The D2-125 Reconfigurable Laser Servo contains a tunable PI< | The D2-125 Reconfigurable Laser Servo contains a tunable PI< | ||
- | The main component in the Reconfigurable Laser Servo is the PI< | + | The main component in the Reconfigurable Laser Servo is the PI< |
The Laser Servo can be unlocked by a computer (via TTL control) to jump the output voltage to a set voltage difference from the current lock point, or to a specific voltage. This feature can be used to jump the laser frequency a known distance away and then relock to the original or a new lock point frequency. This feature can be used for auto-locking or relocking routines. | The Laser Servo can be unlocked by a computer (via TTL control) to jump the output voltage to a set voltage difference from the current lock point, or to a specific voltage. This feature can be used to jump the laser frequency a known distance away and then relock to the original or a new lock point frequency. This feature can be used for auto-locking or relocking routines. | ||
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This jumper is only accessible by removing the right side panel (see above) and sets whether the ramp input is in master or slave mode. It is factory set to be in MASTER MODE. In SLAVE MODE (jumper off) the RAMP signal is generated externally and input through the back panel RAMP I/O port. In MASTER MODE (jumper on) the ramp is generated internally and is sent out to the RAMP I/O port for driving other D2-125 Laser Servos configured in SLAVE MODE. | This jumper is only accessible by removing the right side panel (see above) and sets whether the ramp input is in master or slave mode. It is factory set to be in MASTER MODE. In SLAVE MODE (jumper off) the RAMP signal is generated externally and input through the back panel RAMP I/O port. In MASTER MODE (jumper on) the ramp is generated internally and is sent out to the RAMP I/O port for driving other D2-125 Laser Servos configured in SLAVE MODE. | ||
- | The slave ramp is multiplied by about -5x (at slave Ramp Amp maximum) | + | The amplitude of the slave ramp is about -5x of the master ramp input (at slave Ramp Amp maximum). The DC offset is applied |
====Lock Guard==== | ====Lock Guard==== | ||
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<WRAP center round box 400px> | <WRAP center round box 400px> | ||
| **C** | **B** | **A** | ** Hold Time** | | **C** | **B** | **A** | ** Hold Time** | ||
- | |0ff|0ff|0ff| 60 µs | 150 µs | | + | |Off|Off|Off| 60 µs | 150 µs | |
- | |0ff|0ff|0n| 125µs | + | |Off|Off|On| 125µs |
- | |0ff|On|0ff| 250 µs | 600 µs | | + | |Off|On|Off| 250 µs | 600 µs | |
- | |0ff|0n|0n| 500 µs | 1.25 ms | | + | |Off|On|On| 500 µs | 1.25 ms | |
- | |0n|0ff|0ff| 1 ms | 2.5 ms | | + | |On|Off|Off| 1 ms | 2.5 ms | |
- | |0n|0ff|0n| 2 ms | 5 ms | | + | |On|Off|On| 2 ms | 5 ms | |
- | |0n|On|0ff| 4 ms | 10 ms | | + | |On|On|Off| 4 ms | 10 ms | |
- | |0n|0n|0n| 8 ms | 20 ms | | + | |On|On|On| 8 ms | 20 ms | |
</ | </ | ||
d2/laser_servo.txt · Last modified: 2021/12/17 01:58 by 127.0.0.1