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d2:laser_servo [2019/07/15 16:00]
Michael Radunsky [Laser Lock Troubleshooting]
d2:laser_servo [2019/10/24 09:39] (current)
Michael Radunsky [Lock Guard]
Line 98: Line 98:
 Located at the top of the front panel, the monitor section contains 6 BNC outputs for monitoring various signals used by the Laser Servo. The logic of the monitors is shown in <imgref image1>​. ​ Open a {{d2:​d2-125:​d2-125_monitor_logic.pdf|pdf of this image }}. Located at the top of the front panel, the monitor section contains 6 BNC outputs for monitoring various signals used by the Laser Servo. The logic of the monitors is shown in <imgref image1>​. ​ Open a {{d2:​d2-125:​d2-125_monitor_logic.pdf|pdf of this image }}.
  
-<WRAP center round box 420px><​imgcaption image1|Monitor output logic>{{ d2:​d2-125:​d2-125_monitor_logic.jpeg?​400|}}</​imgcaption></​WRAP>​+<WRAP center round box 420px><​imgcaption image1|Monitor output logic>{{ d2:​d2-125:​d2-125_monitor_logic.jpeg?​600|}}</​imgcaption></​WRAP>​
  
 **Error In** **Error In**
Line 271: Line 271:
 **Ramp Master / Slave (Jumper)** **Ramp Master / Slave (Jumper)**
  
-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 amplitude of the slave ramp is about -5x of the master ramp input (at slave Ramp Amp maximum). ​ The DC offset is applied after amplification.
  
 ====Lock Guard==== ====Lock Guard====
Line 289: Line 291:
 <WRAP center round box 400px> <WRAP center round box 400px>
 |  **C**  |  **B**  |  **A**  |  ** Hold Time** ​ |  **N+1 Relock Time** ​ | |  **C**  |  **B**  |  **A**  |  ** Hold Time** ​ |  **N+1 Relock Time** ​ |
-|0ff|0ff|0ff|  60 µs  |  150 µs  | +|Off|Off|Off|  60 µs  |  150 µs  | 
-|0ff|0ff|0n|  125µs ​ |  300 µs  | +|Off|Off|On|  125µs ​ |  300 µs  | 
-|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  |
 </​WRAP>​ </​WRAP>​
  
Line 378: Line 380:
  
 <WRAP center round box 400px><​imgcaption factory_settings|Factory settings for locking a D2-100> <WRAP center round box 400px><​imgcaption factory_settings|Factory settings for locking a D2-100>
-{{ {{ d2:​d2-125:​factory_settings_red.png?​direct&​400 |}} |}}</​imgcaption></​WRAP>​+{{ {{ d2:​d2-125:​factory_settings_red.png?​direct&​700 |}} |}}</​imgcaption></​WRAP>​
  
 <WRAP center round box 60%><​tabcaption factory_setting |D2-125 locking D2-100 or TOSA> <WRAP center round box 60%><​tabcaption factory_setting |D2-125 locking D2-100 or TOSA>
d2/laser_servo.1563231606.txt.gz · Last modified: 2019/07/15 16:00 by Michael Radunsky