| Both sides previous revisionPrevious revisionNext revision | Previous revisionLast revisionBoth sides next revision |
| d2:spectroscopy_module_212 [2015/12/09 19:03] – [Inputs, Outputs, and Controls] Michael Radunsky | d2:spectroscopy_module_212 [2021/08/26 14:26] – external edit 127.0.0.1 |
|---|
| |
| 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. | 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 ===== | ===== Absolute Maximum Ratings ===== |
| **Input Connector**** (****6-pin circular)** | **Input Connector**** (****6-pin circular)** |
| |
| Power from the D2-series power bus 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>. 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 | -7 V to -15 V | 100mA | See note below. | |
| | 5 | -15 V | 100mA | See note below. | | | 3 | 9 | +7 V to +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)** | **Signal Output (SMA)** |
| |
| |
| 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: | 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 ^ | ^ Alkali ^ Turns CW ^ Wiper Voltage ^ Temp ^ |
| | cesium | 2 | 6.8V | ~30°C | | | cesium | 2 | 6.8V | ~30°C | |
| | rubidium | 4-5 | 5.7V | ~40°C | | | rubidium | 4-5 | 5.7V | ~40°C | |
| | potassium | 8-9 | 3.9V | ~60°C | | | potassium | 8-9 | 3.9V | ~60°C | |
| </WRAP> | </tabcaption></WRAP> |
| |
| **Window Offset Adjustment** | **Window Offset Adjustment** |
