Black Lion Audio Micro Clock MKIII

1. Introduction

The Black Lion Audio Micro Clock MKIII is a high-performance master clock designed for professional audio environments. This device incorporates proprietary jitter-reduction and harmonics-enhancing technologies to deliver a robust and musically pleasing clock signal. It features a compact half-rackspace chassis and offers a comprehensive set of connectivity options for various studio setups.

This manual provides essential information for the proper setup, operation, and maintenance of your Micro Clock MKIII. Please read it thoroughly before using the device to ensure optimal performance and longevity.

2. Key Features

• Master Clock with 8 Selectable Sample Rates: Provides precise timing signals for digital audio equipment.
• S/PDIF Optical and Coaxial Outputs: Offers versatile digital audio connectivity.
• Galvanic Transformer Isolation: Enhances signal integrity by reducing ground loop interference.
• Dedicated Output Drivers: Ensures stable and isolated signal delivery to connected devices.
• AES Output: Professional-grade digital audio output for studio integration.
• Lower-Jitter Crystal Oscillators: Improved clock accuracy for superior audio conversion.
• LED Frequency Display: Clear indication of the selected sample rate.
• Six BNC Outputs: Capable of supporting sample rates up to 384kHz.

3. Setup

3.1 Unpacking and Inspection

Carefully remove the Micro Clock MKIII from its packaging. Inspect the unit for any signs of damage that may have occurred during shipping. Retain the original packaging for future transport or storage.

3.2 Placement

Place the Micro Clock MKIII on a stable, flat surface or install it into a standard 19-inch equipment rack using the provided rack ears. Ensure adequate ventilation around the unit to prevent overheating.

This image displays the front panel of the Micro Clock MKIII with its optional rack ears installed, ready for mounting in a standard audio equipment rack. The power button, LED frequency display, and KHz selector knob are visible.

3.3 Power Connection

Connect the included DC power adapter to the 'DC IN' port on the rear panel of the Micro Clock MKIII. Plug the adapter into a suitable AC power outlet. Ensure the power switch on the front panel is in the 'OFF' position before connecting power.

3.4 Connecting Audio Devices

The Micro Clock MKIII offers multiple output types for synchronization with your digital audio equipment:

• BNC Outputs (1-6): Use 75-ohm BNC cables to connect these outputs to the word clock inputs of your audio interfaces, converters, or other digital devices. Outputs 1-3 support 44.1-384 kHz, and outputs 4-6 support 44.1-384 kHz.
• S/PDIF OUT (Coaxial): Connect a standard RCA coaxial cable from this output to the S/PDIF input of your device. Supports 44.1-192 kHz.
• OPTICAL OUT (S/PDIF): Use a TOSLINK optical cable to connect this output to the optical S/PDIF input of your device. Supports 44.1-96 kHz.
• AES OUT: Connect a standard XLR cable from this output to the AES/EBU input of your professional audio equipment.

This image illustrates the rear panel of the Micro Clock MKIII, highlighting the six BNC outputs (44.1-384 kHz), S/PDIF coaxial output (44.1-192 kHz), Optical S/PDIF output (44.1-96 kHz), AES output, and the DC power input. Safety warnings are also visible.

4. Operating Instructions

4.1 Powering On/Off

To power on the Micro Clock MKIII, press the 'POWER' button located on the front panel. The LED frequency display will illuminate, showing the current sample rate. To power off, press the 'POWER' button again.

This image displays the front panel of the Micro Clock MKIII, featuring the power button, LED frequency display, and the KHz selector knob. The unit is shown without rack ears.

4.2 Setting Sample Rate

Use the 'KHz' selector knob on the front panel to cycle through the available sample rates. The selected rate will be displayed on the LED screen. Ensure that all connected digital audio devices are set to synchronize with the sample rate output by the Micro Clock MKIII.

The Micro Clock MKIII supports the following sample rates:

• 44.1 kHz
• 48 kHz
• 88.2 kHz
• 96 kHz
• 176.4 kHz
• 192 kHz
• 352.8 kHz
• 384 kHz

Note that the maximum supported sample rate varies by output type (e.g., Optical S/PDIF supports up to 96 kHz, while BNC outputs support up to 384 kHz).

5. Maintenance

5.1 Cleaning

To clean the unit, use a soft, dry cloth. Do not use liquid cleaners or solvents, as these may damage the finish or internal components. Ensure the unit is powered off and disconnected from the power source before cleaning.

5.2 Environmental Considerations

Operate the Micro Clock MKIII in a dry environment, away from direct sunlight, heat sources, and excessive dust. Avoid exposing the unit to moisture or extreme temperature fluctuations.

6. Troubleshooting

• No Power: Ensure the DC power adapter is securely connected to both the unit and a working AC outlet. Check the power button on the front panel.
• No Clock Signal: Verify that the Micro Clock MKIII is powered on and displaying a sample rate. Check all cable connections (BNC, S/PDIF, AES) for proper seating. Ensure your receiving device is set to external clock synchronization and matches the sample rate of the Micro Clock MKIII.
• Audio Dropouts or Jitter: Confirm that all connected devices are properly terminated (if applicable for BNC connections) and that cable lengths are appropriate. Ensure there are no ground loops in your system.
• Incorrect Sample Rate Display: Rotate the 'KHz' knob to select the desired sample rate. If the display is erratic, power cycle the unit.

If you encounter persistent issues, please refer to the support section for contact information.

7. Specifications

8. Warranty and Support

For warranty information and technical support, please refer to the official Black Lion Audio website or contact their customer service directly. Keep your proof of purchase for warranty claims.

Black Lion Audio Website: www.blacklionaudio.com