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| groups:mg:10mhz [2017/12/19 10:45] – ssauer | groups:mg:10mhz [2018/09/04 12:55] (current) – removed ssauer | ||
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| - | ====== 10MHz frequency source ====== | ||
| - | |||
| - | ===== Possible sources ===== | ||
| - | All sources exist in ResLab. | ||
| - | - [[.: | ||
| - | - [[.: | ||
| - | - OXCO 5 MHz | ||
| - | - OXCO 10 MHz (broken) | ||
| - | - [[.: | ||
| - | |||
| - | - [[.:GPS receiver|GPS receiver]] | ||
| - | - [[.:Marconi synthesizer|Marconi Synthesizer]], | ||
| - | - Selfmade distributor [Klaus] | ||
| - | - K+K distributor (not for high quality distribution) | ||
| - | - HighTec Fiber ??? | ||
| - | |||
| - | - CSAC Chip für stabile 10MHz Referenz | ||
| - | |||
| - | ==== Current Setup [30.05.2017] ==== | ||
| - | {{ : | ||
| - | {{ : | ||
| - | |||
| - | ===== Future Setup ===== | ||
| - | {{: | ||
| - | * Ansprechpartner für Löcher in der Uni: Miehlbradt, Marion | ||
| - | * {{ : | ||
| - | * {{ : | ||
| - | |||
| - | | **Experiment** \\ Ansprechperson Experiment \\ Ansprechperson Kabelverlegeung | ||
| - | | **ResLab** \\ S. Sauer \\ S. Sauer | ||
| - | | **Atom-Lab-Mg** \\ S. Sauer \\ W. Friesen | ||
| - | | **KRb** \\ J. Peise \\ A. Igel | ||
| - | | **QAI,EPR** \\ J. Peise \\ C. Pür | D313 -> D315 | ||
| - | | **ATLAS** \\ H. Albers \\ H. Albers | ||
| - | | **VLBAI** \\ E. Wodey \\ ? | ||
| - | | **Quantengravi** \\ J. Mathias \\ ? | ||
| - | | **AG S.& C. Ospelkaus** \\ Mirko Sierke \\ S. Grondwoski | ||
| - | | **Q-Port** \\ S. Bode \\ ? | ||
| - | | **Lasus** \\ Thejs \\ ? | D220 | ||
| - | | **Maius** \\ D. Becker | ||
| - | | **AG Morgner** \\ B. Kreipe | ||
| - | ^ Gesamt | ||
| - | ===== To Do ===== | ||
| - | **1)**\\ | ||
| - | < | ||
| - | < | ||
| - | < | ||
| - | * "GPS ->" Rb-10Mhz [right Output] -> BNC cable -> BNC-I-connector -> BNC-SMA-connecotor -> long cable -> PNA | ||
| - | {{: | ||
| - | < | ||
| - | * Channel J1 and J2: OCXO -> short cable -> SMA-I-connector -> long cable -> PNA\\ | ||
| - | {{: | ||
| - | < | ||
| - | * J1 -> short cable -> SMA-BNC-connector -> TP [6MHz] -> long cable -> PNA | ||
| - | {{: | ||
| - | * J1 -> short cable -> SMA-BNC-connector -> TP [6MHz] -> Doubler [FD-2+] -> BNC-SMA-connector -> long cable -> PNA | ||
| - | {{: | ||
| - | * J1 -> short cable -> SMA-BNC-connector -> TP [6MHz] -> Doubler [FD-2+] -> BNC-SMA-connector -> BP [SBP-10.7+] -> long cable -> PNA | ||
| - | {{: | ||
| - | * J1 -> short cable -> SMA-BNC-connector -> TP [6MHz] -> Doubler [FD-2+] -> BNC-SMA-connector -> BP [SBP-10.7+] -> BNC-SMA-connector -> Att. [10dB] -> BNC-SMA-connector -> long cable -> PNA | ||
| - | {{: | ||
| - | * Overall setup: J1 -> short cable -> SMA-BNC-connector -> TP [6MHz] -> Doubler [FD-2+] -> BNC-SMA-connector -> BP [SBP-10.7+] -> BNC-SMA-connector -> Att. [10dB] -> short BNC-cable -> Amplifier [ZFL-500LN-BNC+] -> LP [BLP-15] -> Att. [20dB] -> Att. [3dB] -> BNC-SMA-connector -> long SMA cable -> PNA | ||
| - | {{: | ||
| - | < | ||
| - | * Currently not possible. | ||
| - | |||
| - | |||
| - | **2)**\\ | ||
| - | < | ||
| - | **3)**\\ | ||
| - | < | ||
| - | **4)**\\ | ||
| - | < | ||
| - | **5)**\\ | ||
| - | < | ||
| - | ====Distibution==== | ||
| - | * Timetech distributor: | ||
| - | * Gibt es für Eco (Isolation: 120dB bei 10MHz / only BNC) und High Performance (Isolation: 150dB / only SMA) | ||
| - | * {{ : | ||
| - | * {{ : | ||
| - | * Spectra dynamics distributor: | ||
| - | |||
| - | ^ Feature | ||
| - | ^ Phase Noise [dBc] | ||
| - | ^ Channel/ | ||
| - | ^ Groundloops | ||
| - | ^ RF-Bandwidth [MHz] | 5 to 100 MHz\\ sine wave \\ useable from 100kHz to 200 MHz | +/- 1 dB\\ 0.5-65 (min 1-50) | | ||
| - | ^ Input Level [dBm] | Input level working: +6 to +17 (+14 dBm @ 100 MHz)\\ | ||
| - | ^ Output Level [dBm] | <hi # | ||
| - | ^ Gain [dB] | Gain: 0 (+0.15/-0.1 dB, 1 – 100 MHz, +0.15 to –0.5 dB @ 200 MHz)\\ Gain variation: | ||
| - | ^ Impedance [Ω] | Input: 50, nominal\\ Output: 50, nominal | ||
| - | ^ Return loss [dB] | Input: >45 @5MHz and 10 MHz, >30 @100 MHz\\ Output: >50 @5MHz and 10 MHz, >30 (typ –35) @ 100 MHz | Input(S11): -35 (max -30)\\ Output(S22): | ||
| - | ^ Distortion [dBc] | <hi # | ||
| - | ^ Temp. Delay Coefficient | ||
| - | ^ Connectors | ||
| - | ^ Power connectors | ||
| - | ^ Number of Outputs | ||
| - | ^ Number of Inputs | ||
| - | ^ More | {{: | ||
| - | |||
| - | **6)**\\ | ||
| - | < | ||
| - | **7)**\\ | ||
| - | < | ||
| - | ==== Which cables? ==== | ||
| - | * Best choise (cost-effectiveness) < 150 MHz: {{ : | ||
| - | * Aircell 5 for > 100 MHz, low attenuation for higher frequecies: [[http:// | ||
| - | * For high frequencies <10 GHz: {{ : | ||
| - | * **Testing cable:** | ||
| - | * Offenes Ende vermessen, dann sollte es Hochohmig sein | ||
| - | * Auf einer Seite mit 50 Ohm verbinden und vermessen: 50 Ohm+Kabelwiderstand (<3-4 Ohm ist ok) | ||
| - | * Wenn der Kabelwiderstand höher ist, dann wurden vermutlich beim Crimpen (Luft-)Übergangswiderstände erzeugt | ||
| - | |||
| - | ==== Which connectors? ==== | ||
| - | * BNC or SMA? | ||
| - | |||
| - | **8)**\\ | ||
| - | < | ||
| - | |||
| - | |||
| - | ==== Mor isolation between ports? ==== | ||
| - | * Use: FTB-1-1*A26+ | ||
| - | * Datasheet: [[https:// | ||
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| - | ====OCXO==== | ||
| - | * Vibration isolation for the OXCO? | ||
| - | * Frequency double, how? | ||
| - | |||
| - | |||
| - | ====Filters==== | ||
| - | * 5MHz | ||
| - | * 10MHz | ||
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