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SPA 1500

Operating instructions

08100-005-OI

Page 4 of 5

1.5 Attention tone Ding Dong (Optional)

When paging is performed an attention tone (ding-dong) will be distributed over the

loudspeakers in the selected zone(s).

The duration of this attention tone is approximately 2 seconds. In order avoid interference

with the attention tone wait approximately 2 seconds after activation before making the

announcement.

1.6 Priority

The SPA system incorporates user priority. The priority ranking is:

1. USER 1 (SPA 1501 / 1506 or “Emergency PA” unit 0012)

2. USER 2 (SPA 1501 / 1506)

3. USER 3 (SPA 1501 / 1506)

4. EXTERNAL PA (PABX / Intercom etc)

5. ALARM

5.1 General Alarm

5.2 Fire Alarm

5.2 Alarm 3 (optional)

6. ENTERTAINMENT

Any action (PA / Alarm) from a service with higher priority will immediately override any

ongoing activity. Actions with lower priority will not interfere with the current activity.

The alarm (Option) will temporarily override any ongoing PA when initiated, but the user

may immediately regain access by reactivating the TALK button.

All announcements during alarms will be sent to ALL ZONES regardless of any previous PA

zone selection.

1.7 Mute local loudspeaker

Each user has one "mute local loudspeaker" circuit output from SPA 1500.

The local speaker(s) to the three different users may be routed through these circuits to

obtain undistorted PA messages. This will reduce the risk of audible feedback, and ensure

safe operation.

1.8 Override volume control

Each zone has an "override volume control" output from the SPA 1500.

If the system distributes entertainment sources, the use of local volume controls are

common.

In order to make PA announcements and Alarms output at nominal levels, the volume

controls are equipped with a volume setting bypass circuit controlled by this output.

These outputs can also be used for muting external entertainment systems during

PA/Alarm. This ensures any Alarm / PA message will be heard without any disturbing

entertainment audio.

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