Roland S-4000M, Owner'S Manual

Page: 9 / 28

9
Installation and Connections
Never block the intake port or exhaust port on the side or rear panel. Doing so may cause the temperature of the unit’s interior to
rise, resulting in malfunction caused by heat. Install the unit so that at least 2 centimeters of space is left in front of the intake and
exhaust ports.
fig.cooling-fan.eps
With Digital Snake and V-Mixing Systems, digital transmission of audio signals is performed using REAC (Roland Ethernet Audio
Communication). Compared to analog transmission, this system is extremely resistant to noise pollution, but in very rare
instances, noise can occur. Selection of the wrong cable and incorrect cable handling are especially likely to cause noise. Observe
the following points when using cables.
• Ensure that the cables used for connections conform to the Cat 5e (Enhanced Category 5) standard.
• Do not use (single) cable longer than 100 meters.
• Do not use cables with cut or torn on coverings.
• Do not step on cables or subject them to undue stress.
• Do not wind cables too tightly or bend them double.
To maintain transmission quality, use of the following optional REAC cables is recommended.
• 100-meter cables : SC-W100S (cable only) or W100S-R (with reel)
• 20-meter cables : SC-W20F
When using a commercially available Ethernet cable to connect REAC devices, fit the included REAC connector covers onto the
REAC ports. Electromagnetic noise might be a problem if these are left unattached.
* Attaching an REAC connector cover is not necessary when you’re using an optional REAC cables (described above).
* When using a commercially available Ethernet cable, be sure to use a cable that conforms to the Cat 5e (Enhanced Category 5) standard.
fig.connector-cover.eps
Use the included four screws when you fasten S-4000M to holder or elsewhere. Refer to “Dimensions“ (p. 23) for locations of
screw holes on bottom chassis.
Intake Port and Exhaust Port
Cables for REAC Connections
About REAC Connector Covers
Fastening the Bottom Chassis
Exhaust Intake
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