d2:laser_servo
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d2:laser_servo [2020/03/16 22:21] – [Description] Michael Radunsky | d2:laser_servo [2021/08/26 14:26] – external edit 127.0.0.1 | ||
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<WRAP center round box 600px> | <WRAP center round box 600px> | ||
| | **Value** | | | **Value** | ||
- | | **Input and Output Impedance** | + | | **Input and Output Impedance** |
| **Output Voltage (main and aux)** | | **Output Voltage (main and aux)** | ||
| **Input Voltage Noise**(( Referenced to 50Ω load)) | | **Input Voltage Noise**(( Referenced to 50Ω load)) | ||
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** Aux: Bipolar / Aux: Unipolar (2-position slider switch) ** | ** Aux: Bipolar / Aux: Unipolar (2-position slider switch) ** | ||
- | This 2-position slider switch is only accessible by removing the right side panel (see above) and sets whether the AUXILIARY OUTPUT SERVO is unipolar or bipolar. It is factory set to be bipolar so the auxiliary output can range from -12 V to +12 V. For some applications such as driving a PZT, limiting the voltage range to positive values is necessary. | + | This 2-position slider switch is only accessible by removing the right side panel (see above) and sets whether the AUXILIARY OUTPUT SERVO is unipolar or bipolar. It is factory set to be bipolar so the auxiliary output can range from -10 V to +10 V. For some applications such as driving a PZT, limiting the voltage range to positive values is necessary. |
**Ramp Master / Slave (Jumper)** | **Ramp Master / Slave (Jumper)** | ||
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**Absolute Jump TTL (BNC)** | **Absolute Jump TTL (BNC)** | ||
- | When asserted HIGH (5V) while in LOCK mode, ABSOLUTE JUMP takes the Laser Servo out of lock and conveys the voltage on LASER JUMP AMPLITUDE to the SERVO OUTPUT. | + | When asserted HIGH (5V) while in LOCK mode, ABSOLUTE JUMP takes the Laser Servo out of lock and conveys |
- | When asserted HIGH (5V) while in RAMP mode, ABSOLULTE | + | When asserted HIGH (5V) while in RAMP mode, ABSOLUTE |
- | When disconnected, | + | When disconnected, |
**Relative Jump TTL (BNC)** | **Relative Jump TTL (BNC)** | ||
- | When asserted HIGH (5 V) while in LOCK mode, RELATIVE JUMP engages a sample-and-hold circuit and takes the Laser Servo out of lock. The voltage on the SERVO OUTPUT is the sample-and-hold value summed in with the LASER JUMP AMPLITUDE. For example, if the laser is locked and the SERVO OUTPUT is -200 mV, then engaging the RELATIVE JUMP and putting 300 mV on the LASER JUMP AMPLITUDE will make the SERVO OUTPUT | + | When asserted HIGH (5 V) while in LOCK mode, RELATIVE JUMP engages a sample-and-hold circuit and takes the Laser Servo out of lock. The voltage on the SERVO OUTPUT is the sample-and-hold value summed in with <color black/ |
When asserted HIGH (5V) while in RAMP mode, RELATIVE JUMP applies a DC offset equal to the LASER JUMP AMPLITUDE to the ramp signal at SERVO OUTPUT. When asserted LOW (0V) while in RAMP mode, the ramp signal is DC balanced. | When asserted HIGH (5V) while in RAMP mode, RELATIVE JUMP applies a DC offset equal to the LASER JUMP AMPLITUDE to the ramp signal at SERVO OUTPUT. When asserted LOW (0V) while in RAMP mode, the ramp signal is DC balanced. |
d2/laser_servo.txt · Last modified: 2021/12/17 01:58 by 127.0.0.1