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d2:quick_start [2015/09/29 23:56] – [Quick Setup Instructions] Michael Radunskyd2:quick_start [2021/08/26 15:26] (current) – external edit 127.0.0.1
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 </WRAP> </WRAP>
 Document Last Updated on ~~LASTMOD~~ Document Last Updated on ~~LASTMOD~~
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 ===== Electronic Modules Initial Setup ===== ===== Electronic Modules Initial Setup =====
  
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 ===== Cabling & Power ===== ===== Cabling & Power =====
 +<WRAP center round important 60%>Never connect or disconnect the D2-105 to/from a laser with the D2-105 energized.  Always power down the D2-105 completely before making connections to the laser.
 +
 +Never connect any device to the D2-005 power supply when it is switched on and supplying power.  Always turn off the power supply, make connections to the devices, and then re-energize the power supply.
 +</WRAP>
  
 Locate the 6 ft connector cable assembly with SMA connectors on both ends. Plug the SMA connector into the LASER CURRENT OUTPUT plug and the Hirose connector into the LASER TEMP OUTPUT on the Laser Controller. Make sure that the nearby Laser switch is in the OFF/RESET position (down). While grounded, remove the SMA terminator connected to the Laser. Connect the other end of the SMA cable and Hirose connectors to the DBR module. Locate the 6 ft connector cable assembly with SMA connectors on both ends. Plug the SMA connector into the LASER CURRENT OUTPUT plug and the Hirose connector into the LASER TEMP OUTPUT on the Laser Controller. Make sure that the nearby Laser switch is in the OFF/RESET position (down). While grounded, remove the SMA terminator connected to the Laser. Connect the other end of the SMA cable and Hirose connectors to the DBR module.
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 If you don’t see the hyperfine transitions, more than likely the pickoff beams in the spectroscopy module need adjustment. Make sure all four screws are holding down the DBR and spectroscopy modules. Loosen the spectroscopy module screws and try making small adjustments while looking at the ERROR IN signal. You can also try scanning the laser current. If you don’t see the hyperfine transitions, more than likely the pickoff beams in the spectroscopy module need adjustment. Make sure all four screws are holding down the DBR and spectroscopy modules. Loosen the spectroscopy module screws and try making small adjustments while looking at the ERROR IN signal. You can also try scanning the laser current.
  
-If you have a D2-110 and you still cannot see spectroscopy, remove the screws to the top of the spectroscopy module and adjust the course steering mirror (see below).+If you have a D2-110 and you still cannot see spectroscopy, remove the screws to the top of the spectroscopy module and adjust the course steering mirror.  Likewise, with the D2-210, you can adjust input PBS.  (See below.)
  
-<WRAP right round box 360px+<WRAP right round box 460px
-[{{:d2:d2-210:d2-210_top.jpg?300|Inside the D2-210 Spectroscopy Module}}]+[{{ :d2:d2-210:d2-210_top.jpg?400|Inside the D2-210 Spectroscopy Module}}] 
 +[{{ :d2:d2-110:sas-inside-with-zoomin.png?400|Inside the D2-110}}]
 </WRAP> </WRAP>
  
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 Connect a BNC cable from RAMP TTL on the **back** of the Laser Servo to the trigger input on your oscilloscope. Set trigger to //**positive**// slope. Connect a BNC cable from the DC ERROR to your oscilloscope. Connect a BNC cable from ERROR IN to your oscilloscope. Connect a BNC cable from RAMP TTL on the **back** of the Laser Servo to the trigger input on your oscilloscope. Set trigger to //**positive**// slope. Connect a BNC cable from the DC ERROR to your oscilloscope. Connect a BNC cable from ERROR IN to your oscilloscope.
  
-Adjust the Coarse and Fine Current controls on the Laser Controller to place a transition peak at the center of the oscilloscope screen. Reduce the ramp amplitude so you can clearly see the hyperfine transitions (adjust fine current as necessary). As you lower the ramp amplitude and bring it back, you will see the spectroscopy on the oscilloscope expand and contract about a single point on the oscilloscope. The point should be near the center of the oscilloscope. Adjust the horizontal position on the oscilloscope to put this point in the //**exact middle**// of the oscilloscope screen. If you move the spectroscopy so that a hyperfine peak is centered on the oscilloscope, it will be easier to see exactly where this point is. Now as you change the ramp amplitude, the value of the trace at the center of the oscilloscope should not change. Adjust the horizontal position again if necessary.+Adjust the Coarse and Fine Current controls on the Laser Controller to place a transition peak at the center of the oscilloscope screen. Reduce the ramp amplitude so you can clearly see the hyperfine transitions (adjust fine current as necessary). As you lower the ramp amplitude and bring it back, you will see the spectroscopy on the oscilloscope expand and contract about a single point on the oscilloscope. The point should be near the center of the oscilloscope. Adjust the horizontal position on the oscilloscope to put this point in the //**exact middle**// of the oscilloscope screen. If you move the spectroscopy so that a hyperfine peak is centered on the oscilloscope, it will be easier to see exactly where this point is.  The [[https://youtu.be/KtaLKASwC8Y|video located here]] may be useful in executing this step. Now as you change the ramp amplitude, the value of the trace at the center of the oscilloscope should not change. Adjust the horizontal position again if necessary.
  
 ==== Side Lock ==== ==== Side Lock ====
d2/quick_start.1443571003.txt.gz · Last modified: 2021/08/26 14:26 (external edit)