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3.3 Cable Connections
Hilo features a treasury of I/O types, suitable to accommodate whatever audio devices you wish to integrate.
Thunderbolt ports
Thunderbolt: Hilo-TB has been tested with standard optical and copper Thunderbolt cables. For Copper cable, one can use lengths up
to 3 meters (9.8 feet). Optical cables, while somewhat more difficult to acquire, do promise operation with much longer cable lengths,
up to 100 meters. Either port may be used to connect to the computer. The other port may be used to daisy-chain to other
Thunderbolt devices (up to 6 total on the Thunderbolt chain).
Note: Using a Thunderbolt 3 computer will require a 3
rd
party adapter like the Apple MMEL2AM/A Thunderbolt 3 to Thunderbolt 2
Adapter.
12V DC port
For connecting an external AC power supply in cases where bus-powered Thunderbolt devices will be connected to the Hilo-TB
LINE IN
Use standard XLR cables (i.e. mic cables) to connect to a line level, balanced signal source. This input is not suitable for use with
microphones, unless a microphone pre-amp is used to get mic-level signals up to line-level. Cable Concerns: If your signal source is
unbalanced, consult Appendix 9.3 to determine if your cables are wired correctly for use with Hilo. For unbalanced cables, 4.5 meters
(15 feet) is the maximum recommended length.
LINE OUT
Use standard XLR cables (i.e. mic cables) to connect to a line level, balanced signal destination. Cable Concerns If your signal source
is unbalanced, consult Appendix 9.3 to determine if your cables are wired correctly for use with Hilo. For unbalanced cables, 4.5
meters (15 feet) is the maximum recommended length.
MONITOR OUT
Use standard ¼” cables. TRS if balanced, standard ¼” TS if unbalanced.
Cable Concerns: For unbalanced cables 4.5 meters (15 feet) is the maximum recommended length.
AES IN/OUT
Use AES XLR cables (110 Ω). Insure that the connected device supports AES3 or AES/EBU. Cable lengths of up to 100 meters (328
feet) are acceptable.
S/PDIF/ ADAT Optical
Use standard TOSLINK optical cables, of lengths up to 9 meters (30 feet).
SPDIF Coaxial In Out
Use 75 Ω S/PDIF cable with RCA connections. Recommended maximum length is 6 meters (20 feet)
Word clock In/Out
Use standard 75 Ω word clock cable with BNC connectors. Recommended maximum length is 9 meters (30 feet).
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