Cadac CM-MD64 Hardware Overview page 16

6. IO FS: Indicates the sample rate (FS) of the inputs and outputs.
7. WC: Word Clock status. EXT-LED indicates the unit is set to follow an external clock; INT-LED
shows the unit is set to CM-MD64's internal clock. For more information refer to the section:
Front Panel Dip Switch Settings
8. SYNC: Synchronisation status. The WC-LED indicates the unit is FOLLOWING a Word Clock
connected to the Word Clock IN BNC [9]. The MADI-LED indicates the unit is FOLLOWING a
Word Clock set by a third-party unit within MADI network that is connected to the MADI Ports
[2]. If both LEDS are OFF, the CM-MD64 is acting as the Word Clock for the network.
9. Word Clock IN / Word Clock OUT: Word Clock IN or OUT - on BNC connectors for 75 ohm
co-axial cable - to ensure the synchronisation of the digital signal with the network.
10. 75 ohm switch: The recessed switch is the input termination for the Word Clock. When
pressed the impedance is set at 75 ohm for use with 75 ohm coax cable.
11. Network: RJ45 Ethernet port for updating the unit's firmware. This is a standard PC network
Gigabit Ethernet port.
12. PSU indicators: LEDs indicate the ON status of each of the two internal power supplies.
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