• We measured the phase noise with FSWP from “Rohde und Schwarz”. Manual:fswp_dat-sw_en_3607-2090-22_v0400.pdf
  
• Information about the measurements is in the ResLab book on the pages 134 - 136 (date: 18.08.2016).
• measurement:
  • each device was measured directly behind the output, except it's mentioned
  • use SMA-cables instead of BNC-cables if possible, thighten the SMA-plug with an open-end wrench, use golden SMA-I-Connection (better quality)
  • don't wiggle the cable → results in noise in the range of 1Hz - 200Hz
  • let the cable swing off bevor starting the measurement
  • check before the measurement, if the dBm number isn't too high for the device
• analysis method:
  • Program “phasenoise_combined.nb” is located in the AFS
  • Copy the program into the folder with the data, which needs to be analyzed and start the program
• physical units:
  • dB: epresses the ratio of two values of a physical quantity
  • dBc (decibels relative to the carrier): power ratio of a signal to a carrier signal, expressed in decibels(dB)
  • dBm: abbreviation for the power ratio in decibels (dB) of the measured power referenced to one milliwatt
• Nächstes Mal Messen

<hi #ff7f27>

1. Wie hatten wir die Datei gespeichert?

</hi>

5mhz_moving_cable_test.pdf

• 5mhz moving cable test.DAT: 4.999.999,822782 Hz [18.08.2016]
• 5mhz without moving.DAT: 4.999.999,825716 Hz [18.08.2016]

Information: Influence on the cable from 1Hz to 100Hz; probably no more from 200Hz

5mhz-ocxo_the_way_to_10mhz.pdf

• 5mhz + amp.DAT: 5.000.000,518799 Hz [18.08.2016]
• 5mhz.DAT: 4.999.999.825716 Hz [18.08.2016]
• 5mhz + doubler + amp.DAT: 9.999.999,658937 Hz [18.08.2016]
• 5mhz + doubler.DAT: 9.999.999,651068 Hz [18.08.2016]
• 5mhz + splitter.DAT: 4.999.999,820720 Hz [18.08.2016]

Question:
What was measured with 5MHz OCXO?
What is meant by splitter?

5mhz_to_10mhz_ocxo_again.pdf

• after ocxo and doubler.DAT: 10.000.000,353714 Hz [22.08.2016]
• after ocxo.DAT: 4.999.999,838434 Hz [22.08.2016]
• ocxo 3.DAT: 4.999.999,834145;Hz [22.08.2016]

Information: measurement of the final 5MHz doubling on another day as a comparison

5mhz_ocxo_with_without_original_power_supply.pdf

• 5mhzrg58smaocxo.DAT: 4.999.999,836230 Hz [18.08.2016] direkt measurement of the new 5MHz OCXO without separate power supply
• 5mhzrg58smaocxo w k+k supply ext supply.DAT: 4.999.999,830501 Hz [18.08.2016] 5MHz OCXO with separate power supply, but K+K power supply was turned on and OCXO was located in the Rack
• 5mhzrg58smaocxo wo k+k supply ext supply.DAT: 4.999.999,824645 Hz [18.08.2016] 5MHz OCXO with separate power supply, but K+K power supply was turned off

10_mhz_amplifier.pdf

• 10mhz amp.DAT: 9.999.999,652707 Hz [18.08.2016]
• 10mhz amp mass_002.DAT: 9.999.999,686110 Hz [19.08.2016] measurement of another day
• 10mhz amp mass.DAT: 9.999.999,651541 Hz [18.08.2016]

Question: What was the problem?

rb_clock.pdf

• rb 10 mhz links.DAT: 9.999.999,682126 Hz [22.08.2016] left BNC-connector
• rb 10 mhz rechts.DAT: 9.99.999,681785 Hz [22.08.2016] right BNC-connector
• rb 5 mhz 2.DAT: 4.999.999,836086 Hz [22.08.2016]
• rb 5 mhz.DAT: 4.999.999,850747 Hz [22.08.2016]

Question: Referenced to what?
Note: “rb 5 mhz 2.DAT” and “rb 5 mhz.DAT” are the same, measured at different times

10mhz_distribution.pdf

• 10mhz atomslab.DAT: 9.999.999,686110 Hz [18.08.2016]
• 10mhz k&k verteiler.DAT: 9.999.999,651353 Hz [18.08.2016] referenced to generated 10MHz signal
• 10mhz ocxo stab indirect synth 2.DAT: 9.999.999,673212 Hz [22.08.2016]
• 10mhz ocxo stab synth.DAT: 9.999.999,673767 Hz [22.08.2016]
• 10mhz selbst.DAT: 9.99.999,650255 Hz [18.08.2016] self-construktion distributor, referenced with OCXO 10MHz, very bad at 1 - 10Hz → probably influenced by other labatories (powersplitter were used instead of buffer outputs?)
• 10mhz selbst no others.DAT: 9.999.999,640838 Hz [18.08.2016](= 10MHz selbs.DAT) self-construktion distributor without other labatories
• ocxo 3.DAT: 4.999.999,834145 Hz [22.08.2016]

Question:
What was measured with “10mhz ocxo stab indirect synth 2.DAT”, “10mhz ocxo stab synth.DAT” and “ocxo 3.DAT”?
They need to be looked at in the original condition in the AFS!

10mhz_synthesizer.pdf

• 10mhz internal synth 2.DAT: 10.000.000,225102 Hz [22.08.2016]
• 10mhz ocxo stab indirect synth 1.DAT: 9.999.999,677410 Hz [22.08.2016]
• 10mhz ocxo stab synth 2.DAT: 9.999.999,672932 Hz [22.08.2016]
• 10mhz ocxo stab synth 3.DAT: 9.999.999,672579 Hz [22.08.2016]
• 10mhz open synth 2.DAT: 9.999.474,907956 Hz [22.08.2016]

r2.pdf

• eom r2 sznth.DAT: 16.200.005,142169 Hz [24.08.2016]
• synth. r2 aom refext..DAT: 77.099.997,538021 Hz [22.08.2016]
• synth. r2 aom refext. richtig.DAT: 77.099.997,514594 Hz [22.08.2016]

pdh.pdf

• pdhlock2.DAT: 13.810.003,192828 Hz [23.08.2016]
• pdhlock.DAT: 13.817.786,393137 Hz [23.08.2016]
• pdhlock int.DAT: 13.810.004,243357 Hz [23.08.2016]
• pdhunlocked.DAT: 13.60.299,455637 Hz [23.08.2016]

r1-r2.pdf

• synt. r1-r2 10mhz ext. direkt.DAT: 340.999.989,006932 Hz [22.08.2016]
• synz. r1-r2 10mhz ext. indirekt.DAT: 340.99.989,008668 Hz [22.08.2016]
• synt. r1-r2 internal.DAT: 341.000.016,201303 Hz [22.08.2016]

rep_rate.pdf

• synth. rep rate 10mhz ext. direkt.DAT: 1.000.000.248,806976 Hz [22.08.2016]
• synth. rep rate 10mhz ext. direkt with 10mhz with real cable.DAT: 1.000.000.249,473547 Hz [22.08.2016]
• synth. rep rate 10mhz ext. indirekt.DAT: 1.000.000.248,770376 Hz [22.08.2016]
• synth. rep rate 10mhz ext. indirekt with real cable.DAT: 999.997.802,893996 Hz [22.08.2016]
• synth. rep rate 10mhz ext. indirekt with real cable with 10mhz.DAT: 1.000.000.249,567324 Hz [22.08.2016]
• synth. rep rate internal.DAT: 1.000.000.282,423948 Hz [22.08.2016]

fiber_stabilization.pdf

• synth. fiber stab. ext. mod.DAT: 79.110.937,461429 Hz [22.08.2016]
• synth.fiber stab. refext..DAT: 79.110.997,261913 Hz [22.08.2016]

atom-lab.pdf

• 10mhz atomslab.DAT: 9.999.999,686110 Hz [18.08.2016] referenced to OCXO
• 80 mhz.DAT: 79.110.997,503162 Hz [18.08.2016] referenced to 10MHz (= 10MHz atomslab.DAT)
• chlocksynth.DAT: 87.169.997,232243 Hz [18.08.2016] referenced to 10MHz (= 10MHz atomslab.DAT)
• wutz.DAT: 104.673.996,567979 Hz [22.08.2016] synthesizer for shifter - AOM

Observation: at 1000Hz there's a jump correlation of “10mhz atomslab.DAT” and “clocksynth.DAT”

aom.pdf

• aom rf atomlab nach abschwaecher.DAT: 87.169.997,264110 Hz [22.08.2016]
• aom rf atomlab nach kabelende.DAT: 87.169.997,256448 Hz [22.08.2016]
• aom rf atomlab nach verstaerker.DAT: 87.169.997,268579 Hz [22.08.2016]

qport.pdf

• qport internal.DAT: 987.732.665,994588 Hz [22.08.2016]
• qport 10mhz ext. direkt stab. auf ocxo.DAT: 987.733.301,133802 Hz [22.08.2016]
• qport 10mhz ext.internal.DAT: 987.733.301,151171 Hz [22.08.2016]