CH C1 - CONTROL Board

(19) USB port for software upgrades. [CONTROL board or optional NETWORK board]
(20) CH Link digital input [DIGITAL_IN #1 board]
(21) Coaxial (S/PDIF) digital input [DIGITAL_IN #1 board]
(22) RCA single-ended analog input for right channel [optional ANALOG_IN board]
(23) XLR balanced analog input for right channel. [optional ANALOG_IN board]
(24) Analog ground connector 2
(25) Analog ground connector 1.Can be connected to digital ground (Earth) using provided jumper
(26) Power fuse and voltage selection
(27) Power cord receptacle
The CONTROL board is mandatory in any C1 configuration and is always factory installed. It can be upgraded by an optional
NETWORK board that replaces it, covering all functions of the CONTOL board plus audio streaming capability. Depending on
optional boards and their arrangement in the C1's expansion slots, connector arrangement may differ on your unit. Each C1 unit
provides 4 expansion slots supporting any combination of the following optional boards (note that one slot is dedicated to the
SYNC_IO board):
• DIGITAL_IN boards (one is already installed in the default C1 configuration) provides 4 digital inputs (coaxial S/PDIF,
optical TOSLINK, AES-EBU and CH-Link)
• USB_IN boards provides an asynchronous USB audio input
• ANALOG_IN boards provides 2 pairs (L+R) or analog inputs (balanced XLR and single-ended RCA)
• SYNC_IO board for external clock synchronization
Note that only one SYNC_IO board is allowed. Optional input boards can be placed in any slot. Installation of optional boards must
be done by a qualified technician only. Do not attempt to install any optional board by yourself as this would void the unit's
warranty.
3.3.1 CONTROL board
The CONTROL board is factory installed into the C1. It provides a USB port for software updates and an Ethernet port for controlling
the unit over a network. Following drawing shows the layout of the back panel of the CONTROL board:
CONTROL board back panel layout
20 C1 User Manual Rev 1.9