Short-term frequency stability measurements (time domain):![BVA oscillator with fine tuning and extra shielding. BVA oscillator with fine tuning and extra shielding.](https://webarchiv.lib.cas.cz:443/wayback/20210508233954im_/https://www.ufe.cz/sites/default/files/resize/Laboratore/la_frekv_stab/lab-lfsm-equip1-large-300x225.jpg)
Equipment:
- Ultra-stable 5 MHz BVA reference oscillators Oscilloquartz 8600-BC5GE.
- Time interval analyzer TSC 5110A.
- Laboratory comparators based on dual-mixer time-difference multiplacation with background noise of 5.5⋅10-15 in terms of Allan deviation for averaging interval of 1 s at 5 MHz in 26 Hz bandwidth.
- Universal time interval counters Stanford Research SR620.
Phase noise measurements (frequency domain):![Dual-Mixer Time-Difference Multiplier. Dual-Mixer Time-Difference Multiplier.](https://webarchiv.lib.cas.cz:443/wayback/20210508233954im_/https://www.ufe.cz/sites/default/files/resize/Laboratore/la_frekv_stab/lab-lfsm-equip2-large-300x199.jpg)
Equipment:
- Phase Noise Detector FSS1000E with modified Phase-Lock Loop (PLL) and the the background noise of L(ƒ=1Hz) = −145dBc/Hz, L(ƒ=100kHz) = −177dBc/Hz at 5 MHz.
- FFT Spectrum Analyzer Stanford Research SR760.
View of the entire laboratory:
![Laboratoř pro měření frekvenční stability Laboratoř pro měření frekvenční stability](https://webarchiv.lib.cas.cz:443/wayback/20210508233954im_/https://www.ufe.cz/sites/default/files/resize/Laboratore/la_frekv_stab/lab-lfsm-complete-large-400x267.jpg)