The new development of Giesemann OCXO Trifecta Mini SE for SoTM sMB-Q370 Audio Grade Motherboard
This version is designed along with customer who is recently purchase the SoTM sMB-Q370 Motherboard for Music Server. Since Q370 is requires a specific frequency to work. He contact AfterDark. and see if we design and develop a Giesemann OCXO Sync Clock Module which is tiny in size to optimises the motherboard with specific clock frequency and output the clock signal to sync with both CPU at motherboard and LAN port for SoTM sMB-Q370 Audio Grade Motherboard.
There is two clock inputs on the SoTM sMB-Q370 Audio Grade Motherboard. One for CPU and One for LAN port
We know thare are customer using AfterDark. Giesemann OCXO Master Clock. They are very keen on improving the existing device with external clock with Giesemann OCXO Reference 10M Master Clock.
The UF.L clock connector for 25MHz is located near the LAN port at the back
The UF.L 24MHz connector for CPU is located near the big S heatsink
The basic clock input design is not bad, but the biggest advantage and difference of the Q370 is that a clock option is provided so that external clock can be used.
If the external clock option is selected for the Q370, the Q370 runs with the external clock instead of the board clock. When the Giesemann Trifecta Mini is installed, the Q370 board operates with a much higher precision clock and noise is reduced. In addition, when using Giesemann Trifecta Mini, the music server will operates with an external master clock input of 10MHz. In other words, Giesemann Trifecta Mini must be installed on the Q370 to enjoy the full potential of the Q370 board.
What is the design concept of Giesemann OCXO Trifecta Mini?
What is the DC input required for Giesemann OCXO Trifecta Mini
What is the special when we design the power section inside the Giesemann OCXO Trifecta Mini?
AfterDark. Giesemann X1 SFP NIC SE for SoTM sMB-Q370
Why it is important to use external Master Clock for SoTM Q370 Motherboard?
sMB-Q370 is a computer board, so the hardware design can have a big impact on sound quality. That's the reason SoTM released the main board. Existing computer main boards are speed-oriented products, so the selection of components, circuit pattern design, clock operation, and power supply are strictly tailored to specifications and functions. However, for audio devices, priority should be given to design related to sound quality rather than simple operations or functions. Noise reduction, cleaner power supply, and clock design suitable for audio equipment are design points that can improve sound quality rather than faster processing and new functions. SoTM's various products and accessories have already proven such a difference in sound quality, and the accumulated results have been tightly integrated into the Q370.
Audiophiles asked SoTM directly about the advantages and differences of the special design of the motherboard Q370. I heard a direct explanation of what the Q370 is different from a general computer board and what the difference is in terms of sound quality.
What is the range of Giesemann OCXO grade can be choose?
What is the specification to determined the Quality of OCXO?
|GRADE||Phase Noise@ 10Hz||Phase Noise@ 1Hz|
|Emperor DOUBLE CROWN||-141||-117|
|Emperor TRIPLE CROWN||-142||-118|
|Emperor Giesemann EVA||-145||-121|
Allan variance short-term stability reference value
[Emperor Giesemann EVA]TAU = 1sec 2.50E-13 or less（0.00025ppb / s）
[Emperor Giesemann] TAU = 1sec 2.78E-13 or less（0.00028ppb / s）
[Emperor Triple Crown] TAU = 1sec 3.8E-13 or less（0.00038ppb / s）
What is the summery of adjustable frequencies?
What is the standard frequency setting for SoTM sMB-Q370 customers?
The miniminst design of Giesemann OCXO Trifecta Mini SE Edition for Q370 will work plug and play.
A demostration on AfterDark. Project ClayX Gisesemann OCXO 10M Reference Master Clock
Giesemann OCXO Features
The product uses the selected audio grade OCXO, and through long-term calibration to select and install equipment with excellent stability.
Level selection value
The OCXO installed in the product can calibrate the products used in industrial equipment for a long time, and use equipment with good characteristics. In order to optimally select the audio clock, we comprehensively evaluate with Symmetricom Flagship 5125A to analysis the phase noise characteristics and short-term stability (Allen dispersion) that can be determinate the OCXO grading accordingly.
The OCXO installed in this product uses a stable OCXO unit that has been calibrated for several months. In order to make the best choice of OCXO. We are conducting a comprehensive evaluation of phase noise characteristics and short-term stability (Allen dispersion) during detailed inspection.
The final product will final measured and fine tuned with Keysight 53220A with reference to Atomic Clock , GPSDO.
The Trifecta Mini of Giesemann OCXO Modules is enclosed by Carbon Fiber AudiophileMAT in 3mm
AfterDark. Project ClayX GIESEMANN OCXO 10MHz Reference Master Clock 產品特點 ...
AfterDark. Black Modernize LPS x GIESEMANN OCXO 10M Edition Highlight of the AfterDark. Black...
Mini - Circuits BLP - 10.7+ Low Pass Filter for Giesemann Clock (Group Buy for...