Fixed Format Madi I/O Overview; Connectivity; I/O & Audio Channels; Fans / Airflow - Calrec Hydra2 Installation Manual

FIXED FORMAT MADI I/O OVERVIEW

A range of MADI I/O units are
available offering various fiber
connection types for the MADI audio
interface.

Connectivity

Like all I/O boxes, Hydra2 network
components interface via pluggable
SFP modules, allowing the connection
type to the Calrec routing network to be
changed as and when needed. The actual
MADI audio I/O fiber connections, used
to interface with other MADI systems
however, are of a fixed type that cannot
be changed. The type of MADI I/O fiber
connections required dictates the I/O box
that should be ordered.
Other than MADI I/O fiber connectivity,
all MADI I/O box types are identical. In
addition to fiber connectivity, all MADI I/O
FRONT PANEL VIEW
Standard fixed-format
status LEDs & box
reset button
REAR PANEL VIEW
66 HYDR A 2
Installation Manual
boxes also have MADI inputs and outputs
via BNC connectors for coaxial copper
use.
I/O&audiochannels
All MADI units have 2 x MADI inputs
(labelled "Rx"—receive) and 2 x MADI
outputs (labelled "Tx"—transmit), providing
a total maximum of 128 channels of
inputs and 128 channels of outputs,
simultaneously, per MADI I/O box. The
I/O is grouped under two "ports"—each
port consisting of 1 x MADI input stream,
& 1 x MADI output stream. Each port can
be selected independently to operate in
the standard 64 channel mode, or 56
channel mode to match the equipment
being interfaced with. The input for each
port can be independently selected to
receive via either the copper or fiber
connector. Outputs from the box are
Factory config
& diagnostics
only
MADI I/O Fiber connectors -
type dependant on unit number
Transmit (MADI Receive (MADI
output) BNC input) BNC
fed to both copper and fiber connectors
simultaneously, irrespective of this setting.
Fans/airflow
MADI I/O units are not fitted with fans.
Cooling is by natural airflow through
the side panels which should not be
obstructed.

GPIO

Due to the compact 1U enclosure, MADI
I/O boxes can NOT be fitted with a GPIO
card.
Samplerateconversion&sync
There is no sample rate conversion
available for MADI I/O. To guarantee
audio performance, equipment being
connected to MADI I/O should be locked
to the same derived sync source as the
Calrec router.
Factory config 56 / 64 channel mode
& diagnostics selection button& LED
only indication
Input status - green
indicates valid MADI
signal being received
Hydra2 interface SFP slots
Address 2 - I/O box Hydra ID
not used setting
Fixed Format I/O