IVIE MPS 2300, Руководство пользователя

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Basic
lvie Technologies
MPS 2300
Instructions
unbalanced line, do not use the mic shield as the
ground connection for Zone Keys (see below).
Active electronic switching connects the mic channel to the
output Zone(s) only during actual paging. This blocks noise
and interference between pages, as well as activating the
Music Muting. To page the desired Zone, ground the
appropriate Key terminal on the barrier strip by using a
switch in the mic or an external switch at the paging
location. Wire Zone A and B keys together to page both
Zones, or use a split paging switch to selectively page
either or both Zones. Music will mute only in the Zones
being paged. A Zone Key can be wired to ground to keep
the mic permanently open, losing the ability to mute music
while paging. In this case, any noise or interference at the
paging input can be passed to the output between pages.
Zone Keying.
Most mics will use the high gain “Mic” position. Telephone
sources and amplified mics may use the “Line” position.
For telephone hook-up, see Section 3.
Paging Mic/Line
Switch.
Mic Gain Control. See Gain Staging (below).
Mic Gain Control.
All Music Inputs have phono plugs for unbalanced sources.
Music Inputs 1 and 2 have barrier strip balanced inputs.
Start with Channel 1 and work across to prevent skipped
positions on the selector.
Music Connections.
Use the phono jacks, or connect to the +Input of the
barrier strip (Music Input 1 or 2 only), leaving the
shorting link in place between Gnd
and -Input. Unbalanced Inputs.
Remove the shorting link to the -Input and connect
the balanced pair to +Input and -Input.
Balanced Inputs
(Music Inputs 1 and 2
Only).
Sum a stereo source into Music Input 1 or 2 by
connecting one channel to the phono plug and the
other channel to the +Input of the barrier strip. Keep
the shorting link from Gnd to -Input. Summing occurs
in-phase through matched 1 OK resistors.
Summing Stereo
Pairs.