TC Electronic BMC-2 Скачать руководство пользователя страница 14

14

BMC-2 Clock & Jitter Rejection

A digital audio signal relies on only two components:
level and time. We all know about levels (bits) – but
timing is equally important to avoid noise and
distortion.

Jitter is unwanted variation of a digital audio signal’s
timing. It is typically recognized by compromised
dynamic range of AD, DA and sample rate converters;
or by clicks and dropouts due to interface breakdown.

A steady digital clock is crucial to the sound quality,
especially when one of the above conversions is
performed.

The clock stability and jitter rejection of BMC-2 is
based on technology from TC System 6000, providing
a performance strikingly better than equipment many
times the price of BMC-2.

The excellent jitter-rejection of BMC-2 is also capable
of cleaning up a less-than-perfect digital signal from an
external source, thereby tidying up your entire studio
timing and optimizing performance.

APPENDIX

Содержание BMC-2

Страница 1: ...BMC 2 JET CLOCK DAC MONITOR CONTROL USER S MANUAL...

Страница 2: ......

Страница 3: ...erview Top 7 Operation 8 TABLE OF CONTENTS 3 EN APPENDIX BMC 2 and Jitter Rejection 14 BMC 2 Design Philosophy 15 Wiring Diagrams 16 Calibrated Listening 18 Technical Specifications 19 TC Electronic S...

Страница 4: ...all about DAC and Level Control BMC 2 also puts user definable reference levels at your fingertips You simply hit the front panel mounted REF button and BMC 2 will attenuate the output to a user defi...

Страница 5: ...SETUP EXAMPLE 5 EN...

Страница 6: ...e supplied 12V DC power supply Analog Outputs Balanced analog outputs for active monitors amplifier or mixer TOS ADAT Lightpipe inputs and outputs on standard TOSLINK connectors TOS Channels 1 2 ADAT...

Страница 7: ...7 EN OVERVIEW TOP...

Страница 8: ...n is to check the LED dot on the knob which briefly blinks at each 6 dB increment This blinking occurs when the gain is within 0 2 dB of a 6 dB increment To ensure a bit transparent 0 dB setting at 3...

Страница 9: ...LOCK LEDs blink this means inputs are not synchronous Any selected input format is passed bit transparently to all digital outputs with the exception of the output that is assigned to ALT 3 INPUT STA...

Страница 10: ...bration makes the spectral balance of a mix more predictable because we aim at different spectral targets when reproduction level changes Calibration is typically performed using pink noise at a defin...

Страница 11: ...lt ALT output is SPDIF AES3 Per default the ALT function is assigned to the SPDIF AES3 out However you can choose to assign it to ADAT or TOS instead using the method described below Assigning ALT to...

Страница 12: ...n mutes the speaker outputs but not the phones Hold CUT for more than three seconds to power off the unit 10 PHONES Knob The PHONES knob controls the headphone output unless BMC 2 is in Ref mode When...

Страница 13: ...s cannot be triggered by the input signal If they do light up it is due to an internal overload Internal overload can occur when a high input level is present and the Rotary Control Knob or the Headph...

Страница 14: ...y clicks and dropouts due to interface breakdown A steady digital clock is crucial to the sound quality especially when one of the above conversions is performed The clock stability and jitter rejecti...

Страница 15: ...of hum and noise suppression even in unbalanced mode One important feature of the BMC 2 is that it can avoid noise when switching between different sample rates But thanks to the sample rate memory lo...

Страница 16: ...ecting the BMC 2 s balanced XLR outputs to unbalanced equipment with 1 4 input jacks In setups where the BMC 2 balanced outputs are connected to unbalanced equipment it is possible to suppress noise b...

Страница 17: ...he BMC 2 input When you are feeding an AES3 signal to the SPDIF AES3 input of the BMC 2 or when you are feeding another device s AES3 input from the SPDIF AES3 output of the BMC 2 we recommend placing...

Страница 18: ...ram track reliably APPENDIX CALIBRATED LISTENING 24 18 12 6 0 dB 6 12 18 24 30 36 42 Dynamic Range Tolenrance of a typical audio consumer Headroom peak Preferred Average Noise Floor Cinema Home Theatr...

Страница 19: ...vel control is based on peak level measuring as it used to be Now with loudness detection principles moving into consumer electronics iTunes Dolby etc and broadcast the loudness advantage of squeezed...

Страница 20: ...namic Range incl DIM Freq Response Crosstalk TECHNICAL SPECIFICATIONS RCA Phono BNC adapter included 75 Ohm 1 Vpp terminated S PDIF 24 bit IEC 958 Pro status bits Optical Pipe Ch 1 to 4 48 kHz Ch 1 to...

Страница 21: ...n THD Dynamic Range Freq Response Power 40 Ohm Load Power 600 Ohm Load EMC Complies with Safety Certified to Environment Operating Temperature Storage Temperature Humidity 24 bit 128 x Oversampling Bi...

Страница 22: ......

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