Cloud CX163 설치 및 사용자 설명서 - 페이지 14

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Cloud CX163에 대해서도 마찬가지입니다: 사용 설명서 (6 페이지)

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Utility Output

In addition to Zones 1 and 2, the CX163 has an additional,

fixed level, balanced output for use in utility areas such as

toilets and foyers, where it is often preferable to have

background music which remains constant whatever sources

and levels are set in Zones 1 and 2.

Music source selection

Music source selection for the Utility Output is determined

by the position of internal PCB jumper J6. The music feed

at the Utility Output can be a) the music source connected

to Line 1, b) the same music source currently selected for

Zone 1 or c) the same music source currently selected for

Zone 2. See "PCB jumper location and settings" on page 17

for locations of PCB jumpers.

Because the feeds from Zones 1 and 2 are taken from before

the MUSIC LEVEL controls in the signal path, the Utility

Output music level is unaffected by them. However, the

Zone 1 feed is taken from after the Line 6 priority circuitry.

Thus if the Utility Output source is set to Zone 1, the source

connected to Line Input 6 will be routed to the Utility Output

as well as to Zone 1 when Line 6 priority is active. See "Line 6

priority" in the next colum for more details of Line 6 Priority.

Mic level

The microphone signal is routed to the Utility Output by

a similar signal path to that in Zones 1 and 2, so that any

paging or other announcements will be heard in the areas

fed by this output. The level of the microphone signal at the

Utility Output can be adjusted by the rear panel pre-set

MIC 1 LEVEL control ([10] at "Description of rear panel"

on page 8). The front panel MICROPHONE LEVEL

controls have no effect on the mic level at the Utility Output.

Note that if the jumper J6 is removed altogether, the Utility

Output becomes a "mic-only" output.

CX163 Installation and User Guide v1.1

Priorities

The CX163 offers several options for determining what

happens to music signals when announcements are made. The

options are selected via internal jumpers, and should be set

to suit the requirements of the installation when the system

is installed. See "PCB jumper location and settings" on page

17 for location of the internal jumpers.

Line 6 priority

It may sometimes be necessary for one music input to have

priority over all the others; for example, a jukebox in a bar,

or a digital sound store programmed to make automatic

announcements in a public space. Line Input 6 may be set to

have priority in Zone 1 over whichever source is selected for

the zone by its SOURCE control.

Line 6 priority can be enabled by moving internal PCB

jumpers J9a & J9b - note that there are two physical jumpers

which must be moved as a pair. The jumpers should be set to

the ON position for Line 6 priority; the default setting is OFF.

When Line 6 priority is enabled, a signal present at the

LINE 6 input will force Zone 1's source selection to that

input; when the signal disappears, the previously-selected

source will be gradually restored over a period of 3, 6 or 12

seconds, as selected by internal PCB jumper J10.

Microphone priority

The microphone input on the CX163 is automatically

configured to take priority over the music signals. When the

priority circuit is triggered, music signals in the respective

zones are attenuated by 30 dB until the priority circuitry is

released.

Microphone priority can be triggered either by signal detection

(AVO) or the zone access contacts on the rear panel (ACC).

Access-triggered priority should only be selected when a

paging microphone is in use with the CX163. To configure

Microphone priority, internal PCB jumpers J14 (Zone 1),

J11 (Zone 2) and J15 (Utility Output) should be set as required.

(Note that J15 is on a sub-board at the rear of the chassis.)

Jumper positions:

•

AVO: the priority action is triggered when the access

contact for that zone is shorted to ground and a signal is

detected at the microphone input.

•

ACC: the priority action is triggered as soon as the

access contact for that zone is shorted to ground.

•

OFF: This position is not marked, but can be achieved by

removing the jumper altogether.

NOTE: It is recommended that if removed, the jumpers are

stored on one pin of the PCB header in case the unit needs

to be reconfigured in the future.

Once priority has been released, the music signal will be

smoothly restored to its former level, over the time period

defined by the setting of J10 (see "Line 6 priority" on this

page). Note that J10 defines the time constant for both Line 6

priority and Microphone priority.