ESI IVX 20, Installation Manual

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Hardware overview/installation IVX 20
B.8
External connections
Grounding instructions
IVX grounding (supplemental ground) is as follows:
•
The conductor wires can be no smaller than the ungrounded branch-circuit supply conductors
(usually 16-gauge or higher).
•
Acceptable wire: bare or covered with green or green and yellow striped jacket.
•
Conductors (and power receptacles) shall connect to earth ground at the service equipment
(usually a cold water pipe or copper ground rod).
•
The supplemental ground must: be used regardless of power cord ground, be connected to the
ground lug on the bottom of the IVX cabinet, and retain ground connection when IVX power sup-
ply module is unplugged.
Note: IVX lines are protected against a 10 KV surge only if the earth ground procedures described
above are followed.
Power
The cabinet requires a 110 VAC outlet; use only the Class 2 power supply module provided. We
strongly recommend a clean, isolated power source in conjunction with a UPS (see below). The
system draws a maximum of 25 watts.
Note: If AC power is interrupted, the system will drop all connections. When power is restored, the
system will resume normal operation in approximately 90 seconds retaining its full pro-
gramming and clock setting.
UPS
For system protection and to maintain uninterrupted operation, we strongly recommend an unin-
terruptible power supply (UPS). A UPS rated for 200 VA will provide approximately two hours of
uninterrupted service for a fully loaded IVX.
MOH port
The MOH connector or the upper right side of the cabinet is a standard
1
/
8
″
monophonic
mini-phone jack and is used for live music-on-hold from an external source such as a radio or CD
player.