Overview

DN9652

DN9652 provides a multichannel interface between two third party digital audio networks and point-to-point interfaces. The third party interfaces operate in separate clock domains and are connected by a bidirectional asynchronous sample rate converter (ASRC). This unique Klark Teknik technology allows the interfacing of up to 64 bidirectional channels between the two independently clocked domains, which can also operate at different sample rates. Currently supporting MADI and Audinate Dante via the Klark Teknik KT-MADI And KT-DANTE64 network modules, DN9652 is future-proofed in the evolving world of digital audio networking technology by being able to support new and emerging protocols via its industry-standard expansion slot, which is compatible with the Cirrus CM-1 * format.

Asynchronous Sample Rate Converter

The multichannel bidirectional Asynchronous Sample Rate Converter (ASRC) allows the two third party domains to function independently, however in instances where the two networks need to be synchronised, the ASRC features a bypass facility so that one third party network domains can be directly clocked from the other.

Additionally, when the two domains are operating independently, a clock failure or loss of synchronisation in one domain will not necessarily affect the operation of the other. Very often in dual-redundant systems it is desirable to propagate a clock failure in one domain across to the other, so that the failure can be recognised and switchover to the redundant network can be initiated. DN9652 features a user-configurable bidirectional output clock inhibit feature that will stop the output clock if the incoming clock synchronisation fails.

Flexible Synchronisation

DN9652 supports 24 bit audio operation at 48 kHz and 96 kHz independently in both third party network domains. Word clock input and output connections plus a black burst horizontal video sync input are provided on BNC connectors, with the latter supporting PAL, SECAM and NTSC formats in standard definition and high definition 720P, 1080P and 1080i formats. The word clock output can be derived from either third party network clock domain or the word clock input.

DN9652 features a precision “AES Grade 1” reference temperature-compensated clock oscillator with 1 part-per-million (ppm) stability. This highly accurate clock source can be used as the reference clock for digital audio systems, providing a very defined sound image free of jitter and other digital clocking error artefacts.

Each third party network domain can be synchronised to the external network clock (with or without word clock synchronisation), the network module onboard clock, the word clock input or the black burst video sync input, as well as optionally slaving to the other network clock domain if the ASRC is bypassed.

Internal Web Server

DN9652 features an on-board web server that allows platform-independent configuration using a web browser application. The need for separate control applications and support for multiple operating system versions is eliminated with this approach, which allows simple user selection of network module and DN9652 settings, including third party network domain sample rate and clock synchronisation options and the ASRC bypass and bidirectional output clock inhibit functions.

Front Panel Indication

DN9652 features status LED indicators for network synchronisation for both third party network domains, Ethernet control port activity and the ASRC bypass and bidirectional output clock inhibit functions on the front panel for ‘at a glance’ status display, even at wide distances and viewing angles. An alphanumeric LCD display allows individual units to be labelled, essential in large network systems where multiple DN9652 units are in use.

Built for the Road

Featuring a rugged steel 1U rackmount enclosure, the DN9652 is designed for the rigours of live concert touring. Premium Neutrik BNC connectors are used to ensure reliable clock connections, night after night.

Auto-ranging universal switch-mode power supply

DN9652 features a universal power supply, which is auto-voltage sensing for use on a worldwide basis.

Features

• Dual network bridge format converter with up to 64 bidirectional channels
• Compatible with Klark Teknik KT-AES50, KT-DANTE64, KT-MADI and KT-USB network modules
• Bidirectional Asynchronous Sample Rate Conversion on every channel with bypass facility
• Bidirectional output audio clock inhibit feature for redundant network systems
• 24 bit audio operation with 96 kHz and 48 kHz sample rates
• Video synchronisation in standard and high definition formats
• Internal "AES Grade 1" temperature-compensated word clock (1 ppm)
• Internal web server allows browser-based configuration via Ethernet control port
• Status indicator LEDs and LCD display on front panel
• Features Neutrik etherCON network ports
• Rugged 1U rackmount chassis for durability in portable applications
• Auto-ranging universal switch-mode power supply

Specifications

Ethernet Control Port

• Control Port: 1

External Synchronisation

• Word Clock Input: 1
• Word Clock Output: 1

Video

• Black Burst Input: 1

Network

• Module Expansion Slot: 2

Asynchronous Sample Rate Converter

• Channels: 64 bidirectional
• Bypass: Bidirectional sync network domain to other network domain (user-selectable)
• Output Clock Inhibit: Bidirectional stop output clock if input clock fails (user-selectable)

Onboard Clock

• Type: Temperature-controlled crystal oscillator (TCXO) with 1 part-per-million (1 ppm) stability

Network Domain Clock Source

• Options: External network clock External network clock with word clock in synchronisation Onboard oscillator Network module onboard clock Clock selection from other network domain Word clock input Video black burst input

Word Clock Output Source

• Options: Either network clock domain Word clock input

Other Terminations

• Power: 3-pin IEC

Power Requirements

• Voltage: 100 to 240 VAC, 50 to 60 Hz
• Consumption: <50W

Dimensions

• Height: 44 mm (1.7") (1U High)
• Width: 483 mm (19.0")
• Depth: 411 mm (16.2")

Weight

• Net: 5.0 kg (11.0 lbs)

Options

• KLARK TEKNIK KT-MADI: MADI Network Module with up to 64 Bidirectional Channels
• KLARK TEKNIK KT-DANTE64: Audinate Dante Network Module with up to 64 Bidirectional Channels