+/- 2.5 us), tracking below 0.1 Hz with 0.1 PPM corrections for optimal jitter rejection.
Two 75 Ohm Wordclock outputs completes the input/output capabilities of the SYNC_IO board.
When C1 is matched with a D1, both equipped with a SYNC_IO board, the optimal configuration is to set the C1 as the clock master
(C1 clock source: INTERNAL), and D1 as the clock slave (D1 clock source: SYNCHRO BNC 75). In that case, connect one of C1's BNC
clock out to D1's clock in configured as a 75 Ohm input with a 75 Ohm BNC-terminated cable.
1.3.5 Ethernet streaming: NETWORK board option
The CONTROL board can be replaced by a NETWORK board, providing all the features of the CONTROL board, plus Ethernet based
audio streaming. Once a musical server is installed and configured properly, simply connect the C1's Ethernet plug to you local
network to use it as an audio renderer. High resolution audio format are supported, and the complete system is enslaved to the
C1's internal clock for jitter-free playback.
1.4 Power supply
The power supply of the C1 is a linear supply with multiple independent local regulations. It is based on an oversized magnetically
shielded toroidal mains transformer and includes a mains filter. A secondary (also toroidal) transformer is used as Standby
transformer to ensure green Standby mode, meeting the latest energy saving regulations. Both transformers have static shields
between primaries and secondaries. They are mounted on a separate steel plate which is isolated from the main base aluminium
plate by silent blocks.
Discrete (power-transistor and op-amp based) ultra low noise regulators are used throughout the power supply and special care has
been paid to the Masterclock power supply. The Masterclock benefits from its own dedicated supply, completely decoupled from the
noisy digital and motor sections. This ensures an ultra-low jitter clock source for the whole system.
Input AC voltage to the power supply can be set to 100V, 115V or 230V AC depending on your local mains voltage.
1.4.1 Optional external power supply
The C1 is equipped with an external power supply input. This input is dedicated to the CH X1 external power supply. When the
external power supply is connected, the internal power supply of the C1 is turned-off (only the Standby transformer remains
active). Turning the internal power supply off ensures that no power supply induced noise or radiations are generated inside the C1
unit, thus permitting optimal operating conditions for the circuits.
Rev 1.9 C1 User Manual 13
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