Calrec SUMMA, Installation Manual

Page: 16 / 96

16 SUMMA
Networked Audio Production System
Getting Started
SETTING HYDRA IDs FOR MODULAR I/O
The HID for modular I/O boxes is set
by a DIP switch on the controller card
and is only accessible by removing
the card. Refer to the Hydra2
installation manual and ensure ESD
precautions are observed before
removing any modular I/O box cards.
Ignore any labelling on the DIP switch
itself and refer to the Calrec labelling
printed on the circuit board around the
switch to clarify its orientation.
When viewing the card from the side, the
most significant bit is on the left and the
least significant bit on the right. Pulling a
switch towards you sets it as a binary 1,
away from you as a binary 0.
The following illustration shows the ID
switch on the modular I/O controller card.
A decimal value of 39 is used for the
example. These illustrations, along with
simple instructions, are displayed on the
top of the modular I/O box itself.
REMOVING A MOD I/O CONTROLLER CARD AND SETTING ITS HID