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Summary of Contents for WEISS Vesta
- Page 1 Weiss Engineering Ltd. Florastrasse 42, 8610 Uster, Switzerland www.weiss-highend.com VESTA OWNERS MANUAL...
- Page 2 OWNERS MANUAL FOR WEISS VESTA FIREWIRE INTERFACE INTRODUCTION ustomer Congratulations on your purchase of the VESTA Firewire Interface and welcome to the family of Weiss equipment owners! The VESTA is the result of an intensive research and development process. On the following pages I will introduce you to our views on high quality audio processing. These include fundamental digital and analog audio concepts and the VESTA interface.
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Page 3: Table Of Contents
OWNERS MANUAL FOR WEISS VESTA FIREWIRE INTERFACE TABLE OF CONTENTS A short history of Weiss Engineering Our mission and product philosophy Advanced digital and analog audio concepts explained Jitter Suppression, Clocking Upsampling, Oversampling and Sampling Rate Conversion in General Reconstruction Filters... -
Page 4: A Short History Of Weiss Engineering
Our list of clients includes big names, like SONY, BMG, EMI, Warner, Hit Factory, Abbey Road, Teldec, Telarc, Unitel, Gateway Mastering (Bob Ludwig), Bernie Grundman Mastering, Masterdisk, Sterling Sound, Whitfield Street, Metropolis and hundreds more. For a more comprehensive list you are invited to visit our pro audio website at www.weiss.ch. Page: Date: 10/08... -
Page 5: Our Mission And Product Philosophy
2001 Introduction of the MEDEA, our High-End Hi-Fi D/A converter and the first product in our High-End Series 2004 Introduction of the JASON CD Transport 2007 Introduction of the CASTOR, our High-End Hi-Fi Power Amplifier 2008 Introduction of the MINERVA Firewire DAC and the VESTA Firewire – AES/EBU Interface Page: Date: 10/08... -
Page 6: Advanced Digital And Analog Audio Concepts Explained
OWNERS MANUAL FOR WEISS VESTA FIREWIRE INTERFACE ADVANCED DIGITAL AND ANALOG AUDIO CONCEPTS EXPLAINED Jitter Suppression and Clocking What is jitter and how does it affect audio quality? In the audio field the term jitter designates a timing uncertainty of digital clock signals. E.g. in an Analog to Digital Converter (A/D) the analog signal is sampled (measured) at regular time intervals;... - Page 7 OWNERS MANUAL FOR WEISS VESTA FIREWIRE INTERFACE Yes, those are in essence sampling rate converters, however in a well designed system these converters employ a synchronous design, where jitter does not play any role. Of course a conversion between 96kHz and 44.1kHz as in the example above, can be done in a synchronous manner as well.
- Page 8 OWNERS MANUAL FOR WEISS VESTA FIREWIRE INTERFACE Jitter handling in the VESTA in more detail The Jitter Elimination Technologies (JET) PLL on the chip used in the VESTA feature state-of-the art jitter rejection abilities and extremely low intrinsic jitter levels. Like all phase-locked loops, JET PLL use feedback to lock an oscillator to a timing reference.
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Page 9: Upsampling, Oversampling And Sampling Rate Conversion In General
OWNERS MANUAL FOR WEISS VESTA FIREWIRE INTERFACE Upsampling, Oversampling and Sampling Rate Conversion in General In consumer audio circles the two terms oversampling and upsampling are in common use. Both terms essentially mean the same, a change in the sampling frequency to higher values. - Page 10 OWNERS MANUAL FOR WEISS VESTA FIREWIRE INTERFACE Note that so far we have talked about the so called anti-aliasing filter which filters the audio signal ahead of the A/D conversion process. For the D/A conversion, which is of more interest to the High-End Hi-Fi enthusiast, essentially the same filter is required.
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Page 11: Reconstruction Filters
OWNERS MANUAL FOR WEISS VESTA FIREWIRE INTERFACE ends up at 352.8kHz. Such a high sampling frequency relaxes the job of the reconstruction filter very much, it can be built with a simple 3 order filter. So, how come that upsamplers are such a big thing in High-End Hi-Fi circles? The problem with the upsamplers is that they are filters again, digital ones, but still filters. -
Page 12: Analog Output Stages
OWNERS MANUAL FOR WEISS VESTA FIREWIRE INTERFACE Analog Output Stages The MINERVA employs completely separated balanced and unbalanced output stages with a very low output impedance of approx. 50 Ohms. The outputs are short circuit proof and are stable even when driving difficult loads. - Page 13 If you would like to dive further into those issues I recommend to visit the website of Mr. Bob Katz, a renowned Mastering Engineer and a Weiss Engineering customer. He publishes articles on Dithering and Jitter and many other topics at http://www.digido.com/...
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Page 14: Firewire Vs Usb
OWNERS MANUAL FOR WEISS VESTA FIREWIRE INTERFACE Firewire vs USB Firewire is a peer-to-peer protocol, meaning that every device on a Firewire network is equally capable of talking to every other device. Two video cameras on a Firewire network can share data with each other. -
Page 15: The Vesta Firewire Interface
A non-switching power supply is used. All sensitive voltages have their own local regulators. The standby power supply leaves the Firewire chip powered. This allows to switch on the VESTA via the Firewire link. The Firewire Bus Power is not used by the VESTA, this allows the VESTA to be used with computers which do not supply Bus Power. - Page 16 OWNERS MANUAL FOR WEISS VESTA FIREWIRE INTERFACE Mechanical Design: The VESTA employs a steel frame with steel / aluminium frontpanel. Frontpanel controls: Three switches with corresponding blue LEDs are used for selecting one out of three input sources, which are Firewire, •...
- Page 17 Digital outputs (two Firewire connectors, one XLR, one RCA connector). • Mains connector with fuses and voltage selector. • Note: We use the same chassis for both Minerva and Vesta units, hence the “Analogue Out” section on the Vesta unit. The • respective connector holes are covered. Page:...
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Page 18: Operation / Installation
Now you see a black selector drum with appropriate voltages written in white letters. Remove this drum, turn it to the appropriate voltage and reinsert it. Now firmly close the lid again. Connect the VESTA to the wall outlet with the mains cable. Page:... - Page 19 AES/EBU: Selects the XLR input. S/PDIF: Selects both RCA and Toslink inputs. At the first hit of the S/PDIF switch the VESTA selects the RCA input. If there is no signal recognized at the RCA input it automatically selects the Toslink input.
- Page 20 Dual Wire / Single Wire The VESTA unit can be set to dual wire AES/EBU format with an internal jumper. To gain access to the jumper unplug the mains cord and open the cover (remove 6 screws). On the lefthandside of...
- Page 21 8. Click Restart After installing the drivers, connect the VESTA to the computer and connect the power cord to the VESTA. The VESTA should now be recognized automatically. In Windows tell the installation window that you do not want to check the Microsoft website for drivers and then let the drivers be installed automatically.
- Page 22 The sampling rate of the device when internally clocked. When clocked/synching to one of the other interfaces (XLR, RCA, TOS) the sampling rate indicated reflects the one fed from the external device. Note that when using the XLR, RCA or TOS inputs there is no need to hook up a computer to the Vesta. Page:...
- Page 23 OWNERS MANUAL FOR WEISS VESTA FIREWIRE INTERFACE Other Settings Available under Windows only. Enable WDM Audio: enables the WDM driver. Operation Mode: determines the stability of the system. For weak systems you should select Safe Mode Level 3. For lower latency Normal or Save Mode Level 1 can be selected.
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Page 24: Technical Data
OWNERS MANUAL FOR WEISS VESTA FIREWIRE INTERFACE Technical Data Digital Inputs: (1) XLR connector, (1) RCA connector, (1) Toslink connector (optical), (2) Firewire connectors All inputs accept professional or consumer standard , i.e. accept AES/EBU or S/PDIF signals Sampling Frequencies: 44.1, 48.0, 88.2, 96.0, 176.4 or 192kHz on any of the inputs Maximum input wordlength: 24 Bits Dual wire mode (internal jumper): channel 1 on XLR, channel 2 on RCA input, active at 176.4 or 192 only. - Page 25 OWNERS MANUAL FOR WEISS VESTA FIREWIRE INTERFACE Power: Mains Voltage: 100...120 / 200...240 Volt Fuse rating: 500 mA slow blow at 100…120V, 250mA slow blow at 200…240V Power consumption: 4VA max. Power consumption in standby: 3VA max. Page: Date: 10/08...
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Page 26: Contact
OWNERS MANUAL FOR WEISS VESTA FIREWIRE INTERFACE CONTACT For any questions, suggestions etc. feel free to contact us at: Weiss Engineering Ltd. Florastrasse 42 8610 Uster Switzerland Phone: +41 44 940 20 06 Fax: +41 44 940 22 14 Email: weiss@weiss.ch...
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