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groups:mg:temperature_controller [2018/05/08 08:46] – rholstgroups:mg:temperature_controller [2018/06/01 14:32] (current) – [In loop stability] rholst
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   * **USB**: connection to PC, see [[groups:mg:meerstetter|Meerstetter wiki entry]] for more information   * **USB**: connection to PC, see [[groups:mg:meerstetter|Meerstetter wiki entry]] for more information
   * **SUB D-9**: male connector, connects to [[groups:mg:laserdiode_mount|laser mount]]   * **SUB D-9**: male connector, connects to [[groups:mg:laserdiode_mount|laser mount]]
 +  * **Tuchel socket**: connection to 5-24V @ 4A max
 +
 +^ Socket  ^ Pin Name   ^ Connected To  ^ Explanation                       ^
 +| X1      | VIN        | XLR Plus      | connections for the power supply  |
 +| :::     | GND        | XLR GND       | :::                               |
 +| :::     | RES2       | LED Anode     | status LED                        |
 +| X2      | OUT +      | SUB D Pin 4   | TEC (+)                           |
 +| :::     | OUT -      | SUB D Pin 5   | TEC (-)                           |
 +| :::     | OBJ T° UA  | SUB D Pin 3   | NTC (-)                           |
 +| :::     | OBJ T° UB  | SUB D Pin 2   | NTC (+)                           |
 +| :::     | Shield     | SUB D Pin 9   | GND for shield of cable           |
 +
 +The output of the Meerstetter is filtered as shown [[groups:mg:meerstetter#output_filter|here]].
 +
 +For the configuration file of the Meerstetter refer to ''\\AFS\iqo.uni-hannover.de\projects\magnesium\Projekte\PTB Ultrastable laser\Laser at IQO\meerstetter rack einschub''
 +
 +==== In loop stability ====
 +
 +The Meerstetter stabilises the 1560 nm rio planex laser diode running at 123.5mA to the target temperature with a standard deviation of ca. 0.23 mK.
 +
 +{{:groups:mg:meerstetter_rack-mount_in_loop_temperature_vs_time.png?400|}}{{:groups:mg:meerstetter_rack-mount_in_loop_temperature_stability.png?400|}}{{:groups:mg:meerstetter_rack-mount_in_loop_temperature_spectrum.png?400|}}
  
 ---- ----
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 | blinking     | ramping towards target temperature | | blinking     | ramping towards target temperature |
 | off          | error/Meerstetter is off           | | off          | error/Meerstetter is off           |
- 
- 
-To add another status LED to the Meerstetter, you can follow this [[groups:mg:meerstetter#status_leds|step-by-step guide]] 
- 
-==== Other Modifications ==== 
- 
-<note important> What's the meaning of this? </note> 
- 
-On the back side of the circuit board at these two places, two soldering points have to be soldered together, so that 2 wires can be used to connect the NTC. \\ 
-{{:groups:mg:project_ptb-cavity:meerstetterplatine.jpg?400|}}