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--- d2:spectroscopy_module_212 [2014/12/03 00:35] – [Quick Setup Guide] Michael Radunsky
+++ d2:spectroscopy_module_212 [2023/04/18 16:31] (current) – external edit 127.0.0.1
@@ Line 15: / Line 15: @@
 =====Description=====
-The D2-212 saturated absorption spectroscopy module provides error signals derived from saturated absorption spectroscopy of atomic rubidium, cesium, or potassium. It contains a vapor cell, internal temperature controller, balanced photodetectors, and optics.  Temperature control stabilizes the number density of atoms in the cell.The photodiode output is shot-noise limited out to greater than 5 MHz for photocurrents of 100 μA and above.  The high bandwidth of the feedback enables tight solid locking that is immune to vibrations and shock.  The D2-212 is powered by a cable that plugs into the power connectors on any D2 series electronics module or into an ICE-PB1 board, depending on which system you purchased.
+The D2-212 saturated absorption spectroscopy module provides error signals derived from saturated absorption spectroscopy of atomic rubidium, cesium, or potassium. It contains a vapor cell, internal temperature controller, a single photodetector, and optics.  Temperature control stabilizes the number density of atoms in the cell.The photodiode output is shot-noise limited out to greater than 5 MHz for photocurrents of 100 μA and above.  The high bandwidth of the feedback enables tight solid locking that is immune to vibrations and shock.  The D2-212 is powered by a cable that plugs into the power connectors on any D2 series electronics module or into an ICE-PB1 board, depending on which system you purchased.
+=====Purchase Includes=====
+  * D2-212 Spectroscopy Module
+  * VPN00463 SMA cable (6ft)
 ===== Absolute Maximum Ratings =====
@@ Line 69: / Line 74: @@
 =====Inputs, Outputs, and Controls=====
-<imgcaption front|>{{ :d2:d2-212:frontlegend.jpg?nolink |D2-212 Connectors}}</imgcaption>
+<imgcaption front|>{{ :d2:d2-212:frontview-labeled-for-manual.jpg?nolink |D2-212 Connectors}}</imgcaption>
 **Input Connector**** (****6-pin circular)**
-Power from the D2-series power bus or other power supply are made through a 6-pin circular connector ([[http://www.digikey.com/product-detail/en/HR10A-7R-6SB(73)/HR1608-ND/1095466?WT.srch=1&WT.medium=cpc&WT.mc_id=IQ59989287-VQ2-g-VQ6-40609413915-VQ15-1t1-VQ16-c|Hirose HR10A-7R-6SB]]) shown in <imgref front>.  The pin definitions (pin numbers are marked on the connectors) are listed below.
+Power from the D2-005 Power Supply, ICE-PB1 Power Buss, or other power supply are made through a Hirose 6-pin circular connector ([[http://www.digikey.com/product-detail/en/HR10A-7TR-6SA/HR357-ND/510211|HR10A-7TR-6SA]]) shown in <imgref front> and <imgref hirose_pinout>.  The pin definitions (pin numbers are marked on the connectors) are listed in <tabref connector>.
-<WRAP center round box 500px>
+<imgcaption hirose_pinout|Pin numbering on female Hirose 6-pin connector>{{  :d2:d2-160:hirose-connector.png?200  }}</imgcaption>
-^  Pin  ^  Input Voltage  ^  Max Current Draw  ^ Notes ^
-|  1  |  +5V  |  1.5A  | |
+<WRAP center round box 900px><tabcaption connector>
-|  2  |  No Connect  | | |
+^  Hirose Pin  ^  DB-9 Pin (if applicable)  ^  Input Voltage        ^  Max Current Draw  ^  Notes                                                         ^
-|  3  |  +5V Ground  | | Return path for high current +5V. |
+|  1           |  4 and 5                   |  Signal Power Ground  |                    | Return path for power rail.                                    |
-|  4  |  Signal Ground  | | Return path for voltages on pins 5 & 6. |
+|  2           |  8                         |  -15 V                |  100mA             | See note below.                                                |
-|  5  |  -15 V  |  100mA  | See note below. |
+|  3           |  9                         |  +15 V                |  100 mA            | See note below.                                                |
-|  6  |  +15V  |  100mA  | See note below. |
+|  4           |  6 and 7                   |  +5 V                 |  1.5 A / 2.5 A     | 2.5 A max with Doppler subtraction option, 1.5 A max without.  |
+|  5           |                            |  No Connect           |                    |                                                                |
+|  6           |  1 and 2                   |  +5 V Ground          |                    | Return path for high current +5V.                              |
+</tabcaption></WRAP>
-<wrap lo>**Note:** See D2-005 manual for pin out on D-Sub 9-pin connector.</wrap>
-</WRAP>
 **Signal Output (SMA)**
@@ Line 99: / Line 105: @@
 The extent of the trim range can be determined by probing the location shown in <imgref trimpots2> with a voltmeter referenced to case ground (the outer shell of the SMA connector is a good reference point). Probing this location gives the wiper voltage of the trimpot which corresponds to temperature as shown in the table below. This 10-turn trim pot sets temperature from 15°C (fully CCW) to 75°C (10 turns CW).  The 5-turn point is approximately 42°C. The following table gives approximate temperature settings for the three available alkali options:
-<WRAP center round box 300px>
+<WRAP center round box 300px><tabcaption temperature>
 ^ Alkali ^  Turns CW  ^  Wiper Voltage  ^  Temp  ^
 | cesium |  2  |  6.8V  |  ~30°C  |
 | rubidium |  4-5  |  5.7V  |  ~40°C  |
 | potassium |  8-9  |  3.9V  |  ~60°C  |
-</WRAP>
+</tabcaption></WRAP>
 **Window Offset Adjustment**
@@ Line 131: / Line 137: @@
   - The module should now be set up for spectroscopy.
 =====Troubleshooting=====
-==== Rubidium on Vapor Cell Windows ====
+==== Metal Atoms on Vapor Cell Windows ====
 TBD
 ==== Polarization Sensitivity====