Drawmer D-Clock-R DMS-6 Owner's Manual - Page 4

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DUAL REDUNDANT WORD CLOCK DISTRIBUTION AMPLIFIER

Expanding on the renowned Drawmer D-Clock in providing

word clock measurement and distribution to digital audio

environments the D-Clock-R has been designed with not

only studio recording in mind but also the live and broadcast

environment, where reliability and stability are absolutely

imperative. Designed for fail-safe operation the D-Clock-R

as been developed with dual redundancy for both the

power supplies and also the word clock inputs, ensuring

that the show will go on regardless of technical difficulties.

DUAL REDUNDANT INPUTS

Auto-Sensing, auto-switching

inputs provides a fail-safe backup

should one input fail.

The Drawmer D-CLock-R is an auto-sensing dual

redundancy input, sixteen output word clock distributor

with a 16 character blue LCD display providing a high

accuracy reference measurement of the incoming sample

rate. It uses a high stability TCXO (temperature

compensated xtal oscillator) along with a microcontroller

to measure the incoming sample rate to an accuracy of

2ppm and displays the information in three different

formats, actual frequency (to one decimal place), nominal

frequency +/- ppm error, or nominal frequency plus

percentage of pull up or pull down.

The D-Clock-R has two BNC inputs, a default

and auxiliary, which is automatically selected

depending on the strength and quality of the

signal, and capable of locking on to both

word clock (upto 768KHz) and AES-3id (upto

192kHz), it has twelve BNC clock outputs

situated on the rear panel with a further four

BNC clock outputs on the front panel for

quick patching to other digital devices.

DRAWMER

D-Cloc

D-Clock k k k k -R

D-Cloc

DMS-6

INTRODUCTION

TWO INDEPENDENT POWER SUPPLIES

PROVIDE DUAL REDUNDANCY

Can fully operate on a single supply or both (with power load

balancing), providing a fail-safe backup should one fail.

-R

•

Dual Redundancy power supply via 2 x

Universal voltage filtered mains power

inlets for continuous operation & reliability.

Dual Redundant input / 16 output Clock

•

Measurement and Distribution Amplifier

•

Inputs: 2 x Auto-Sensing WordClock /

AES3id BNC dual redundant inputs (@75

Ohms impedance) - should one fail input

is automatically switched to the alternative

source.

•

Outputs: 16 BNC clock outputs - 33 Ohms

impedance - 4 on the front panel for

convenience.

•

3 sample rate measurement LCD modes

accurate to 2ppm.

CHAPTER 1