Page 1
Page 2
Introduction ..........................................................................................................3
Features .................................................................................................................3
Specications ........................................................................................................3
Package Contents .................................................................................................4
Front .......................................................................................................................4
Back .......................................................................................................................4
Connection Diagrams ...........................................................................................5
Repair .....................................................................................................................6
Warranty ................................................................................................................6
Disclaimer ..............................................................................................................6
Copyright ...............................................................................................................7
Page 3
INTRODUCTION
The Micro Clock MkIII XB is the most accurate word clock we’ve developed to date. With
only 0.6pS RMS of jitter at the BNC outputs, it has less than one third of the jitter of the
standard Micro Clock MkIII! It boasts incredibly accurate crystal oscillators and superior
quality galvanic isolation, both of which contribute to the extraordinarily low jitter
measurement.
The Micro Clock MkIII XB’s small form factor and its ability to drive up to 1,000 feet of
coaxial cable make it not only the perfect solution for improving the conversion quality of
an audio interface, but also for re-clocking digital mixing consoles at live shows or houses
of worship, and as the master word clock in large post-production or broadcast facilities.
It can easily sync all of your digital gear together, even if it’s located in dierent rooms, or
dierent buildings!
We spent the better part of a year eld-testing the Micro Clock MkIII XB prior to its release,
and got a lot of positive feedback on the impact it made in a wide variety of setups. We
hope to continue this trend by making it available to the public. Thanks for your purchase
and for your continued support of Black Lion Audio!
FEATURES
• Ultra-low jitter, harmonically-enhanced
word clock signal generation
• Dimmable frequency display
• 8 selectable sample rates (44.1kHz,
48kHz, 88.2kHz, 96kHz, 176.4kHz,
192kHz, 352.8kHz, and 384kHz)
• 6 BNC outputs with dedicated output
drivers for maximum isolation
• RCA S/PDIF output
• Optical S/PDIF output
• AES output
• Full & 1/2 rack removable rack ears
• Locking frequency selector knob
SPECIFICATIONS
Jitter: 0.6pS RMS (BNC outputs)
Outputs: 6 BNC, 1 XLR AES, 1 RCA S/PDIF, 1 Optical S/PDIF (recommended max. cable
length = 1,000ft of high quality, 75Ω coaxial cable)
• BNC: 75 Ω, 5V unterminated
• RCA S/PDIF: 75 Ω, unbalanced
• AES XLR: 110 Ω, balanced
Clock Frequencies
• BNC (kHz) - 44.1, 48, 88.2, 96, 176.4, 192, 352.8, 384
• RCA S/PDIF & AES (kHz) - 44.1, 48, 88.2, 96, 176.4, 192
• Optical S/PDIF (kHz) – 44.1, 48, 88.2, 96
Power: 9VDC (6W power consumption)
Power connector: 2.1mm barrel connector with 5.5mm outer diameter (center pin positive)
Page 4
Weight: 2.2lbs
Dimensions: 6.5”L x 6”W x 1.75”H (without rack ears installed)
Shipping weight: 4lbs
Shipping dimensions: 13”L x 11”W x 5”H
PACKAGE CONTENTS
• Micro Clock MkIII XB
• Power Supply
• Full & 1/2 Rack Ears with Hardware
FRONT
2 31
1. POWER: engage to turn unit on, disengage to turn unit o
2. DISPLAY CONTRAST ( ): engage to dim display, disengage to brighten display
3. FREQUENCY (kHz): rotate three clicks at a moderate speed to unlock and cycle through output
frequencies as indicated on the display
BACK
2
1 3 4 5
1. BNC Out: 5V, 75Ω output; termination is optional (44.1kHz – 384kHz)
2. S/PDIF Out: unbalanced RCA output (44.1kHz – 192kHz)
3. Optical Out: optical S/PDIF output; does not support ADAT (44.1kHz – 96kHz)
4. AES Out: balanced XLR output (44.1kHz – 192kHz)
5. DC In: 9VDC center pin positive, input jack (only use a BLA-specied power supply)
Page 5
CONNECTION DIAGRAMS
LEGEND
MIXING
TRACKING
Word Clock
Digital Audio
Analog Audio
Data
Monitor controller/
500 series lunchbox
w/6 channels of
Multi FX unit
Page 6
REPAIR
should not attempt to repair the device
Please contact Black Lion Audio if you need assistance.
WARRANTY
We extend a three-year warranty on defects in materials and workmanship for all Black Lion
Audio products from the date of purchase. This does not cover user error, wear, tear, or
abuse. Should your B.L.A. product experience any problems or failures during the warranty
period, immediately contact us, and we will gladly correct the issue at no charge (excluding
shipping).
DISCLAIMER
For your safety, please read the following!
Grounding: For your safety, do not defeat the grounding connection. Use the device only
when it is properly grounded.
Liquids, water, and moisture: The device should not be used near water, or when it is wet.
Care should be taken so that it remains dry. Be sure to keep the device away from rain or
other moisture.
Power: The device should be connected to a power supply only of the type described in the
user manual and/or as marked on the rear panel.
Power cables: Power supply cables should not be routed under carpets, or where they are
likely to be walked on or pinched by items placed upon or against them. Do not use power
supply cables that have become worn or frayed.
Multiple-input voltage:
plug, cable, or both, depending on the available power connection in your area.
User Manual
Page 7
1801 W. BELLE PLAINE AVE., SUITE 105
CHICAGO, IL 60613
BLACKLIONAUDIO.COM
Copyright © 2016 Black Lion Audio, Inc. All rights reserved. This manual and any associated
artwork, product designs, and design concepts are subject to copyright protection. No part of
this document may be reproduced in any form without prior written permission of Black Lion
Audio, Inc.
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