DSP supervision (C) - Configuration

'Pilot Tone' (21)

Enables the pilot tone, which is mandatory for the 'LineDetection' function to monitor the speaker lines.

'Alarm Gains' (22)

Enables the alarm gains for the 'LineDetection' function. Changes the levels of the Pilot tone in the event of an alarm from “Pilot” to “Alarm” gains (available on the PC2003 and Cerberus PACE Compact digital audio matrix board only)

'Pilot Auto Gain' (23)

Only used for maintenance. Automatically adjusts the levels of the pilot tone to the values set under 'AutoGain Voltage'. In rare cases audible artefacts can be recognized during the automatic adjustments.

Make sure this feature is disabled once leveling is complete, as otherwise faults with the amplifiers or speaker line may not be detected.

Auto Gain Voltage (24)

Enable 'Pilot AutoGain' and enter the required pilot tone voltage. The value should match the Pilot RMS Value parameter (in the 'Speaker Lines' window).

'Enable Line Detection' (25)

Enables the speaker line supervision and enables the communication with the Line Detection.

'Eject Shortcircuit' (26)

Switches the speaker line off automatically in the event of a short-circuit.

'Class A Loop' (27)

No loop isolator PCA2005 is used.

The start and end of a loop speaker cable are connected to a PC2003 'Digital audio matrix (4/4/16)' or PC1001, PC1002 Cerberus PACE Compact digital audio matrix board.

Normal operation: the loop is controlled as a stub line from one speaker line output. The second speaker line supervises the speaker line loop.

Signal fault: (open circuit) the second speaker line output is activated. The loop is controlled as two stub lines.

Short circuit: the speaker loop is switched off.

'EN5416' (28)

Enabled

• Errors are detected within the requested time of 100 s.
• Fault state: An error state is indicated until a manual reset and/or another manual operation at access level 2 or 3 is performed.
• LED colors of the PT2001 'Desk call stat. (19 buttons)' keypad meet the specifications of EN 54-16.

Disabled

• LineDetection errors not are occurring within the requested time.
• PT2001 'Desk call stat. (19 buttons)' LEDs feature a special mode so they can be detected immediately

'Maintenance' (29)

Used for 'LineDetection' servicing, raises an error immediately after detection without a delay.

Note: Sets the “Loop On” time to 5 sec and the “Loop Off” to 2 sec. This “On-Off” timing indicates the loop isolator the Maintenance mode.

Avoid similar settings in the regular working mode.

'Loop On' (30)

Pilot tone on time (duration in [s]). Set the interval times of the pilot tone. Allowed values 3...30 sec. Default 3 sec. (This setting is only used if any speaker line is part of a loop system)

Avoid “On-Off” timings which might be similar to the “Maintenance” timing.

'Loop Off' (31)

Pilot tone off time (duration in [s]). Allowed values 3...30 sec. Default 4 sec.

Should not exceed 9 sec to ensure speaker line loop stability.

'(t LFH)' (32) Line Fault Holdback Time

Defined time for fault suppression on the speaker line (duration in [s]).

Allowed values 30...2500 sec. Default 90 sec.

For EN 54-16 systems, it must be set to below 100 sec.

'Causes' (33) (Interval Time of)

Starts a measurement every n seconds.

Amplifier 'Nr' (41)

Defines the sequence number of the analog audio output connected to an amplifier. (1-4)

• Pilot: to specify the optional internal pilot tone amplifier
• Backup: to specify the optional internal backup amplifier

Amplifier 'Type' (42)

Use the drop-down menu. Select the amplifier type connected to the analog audio output.

Amplifier 'Rated Power' (43)

Displays the nominal rated power for that amplifier type [W]. In case the "Type" is set to <Other Amplifier>, this parameter is editable.

Amplifier 'Power' (44)

Displays the power of all configured speaker lines for that amplifier in watts [W].

Excluded are the ‘Priority Only’ speaker lines.

Configure the speaker lines in the speaker lines tab (D).

Amplifier 'MaxPower' (45)

Displays the power of all configured speaker lines for that amplifier in watts [W]. The ‘Priority Only’ speaker lines are included.

Configure the speaker lines in the speaker lines tab (D).

Settings 'Pilot [dB]' (46)

Set the gain level for the pilot tone for that amplifier and all connected speaker lines in [dB].

Settings 'Alarm [dB]' (47)

Set the gain level for the pilot gains in the event of an alarm for that amplifier and the connected speaker lines in [dB].

Precondition. 'Alarm Gains' (22) is enabled

(available on the PC2003 and Cerberus PACE Compact systems PC100x only)

Settings 'Value [V]' (48)

Set the expected nominal voltage of the measured pilot tone for that amplifier and the connected speaker lines in [V]

Settings 'Tolerance [V]' (49)

Set the tolerance for expected nominal voltage 'Value [V)' of the measured pilot tone for that amplifier and the connected speaker lines in [V]

The values from the 'Value [V]' + 'Tolerance [V]' fields are evaluated in the measurement algorithm.

Example: Value = 17 V, Tolerance = 10 V. A fault will be raised if the measured pilot tone is below 7V or higher 27V.

'Proposed' Values (50)

The 'Proposed' values for the settings (“Alarm”, “Value” and “Tolerance”) can be displayed with a Right-Click and activate the 'Show Proposed Values' table.

The software suggests configuration parameters, depending on the configuration. These values are calculated based on the amplifier type, speaker line load and line monitoring method.

The values are most meaningful when the system is fully configured

'Details' (50)

The measured 'Details' values ('Alarm', 'Value' and 'Tolerance') can be displayed with a Right-Click and activate the 'Show Details' table.

These values are measured every 10 seconds. Move the mouse over the measured value to display the time since the last measurement.

'Backup Control' (34)

If this flag is enabled, this digital audio matrix is part of a backup amplifier concept. It will switch to a backup amplifier in case of an amplifier fault.

'Amplifier channels' (35)

Choose the type of connected backup amplifier scenario (e.g., '1 channel', '2 channels', '4 channels'). Cerberus PACE Compact supports only the '1 channel' backup.

'Enable Backup In' (36)

Configures which backup-in is connected to the backup amplifier and which backup amplifier should be used in case of an amplifier fault. The backup input is also monitored when the flag is enabled.

This function is available for PC2003 'Digital audio matrix (4/4/16)' and Cerberus PACE Compact systems PC100x.

'Use Amp Sense' (37)

If this flag is enabled, an amplifier fault message will be detected with a logic control input contact. The related input function is 'Amplifier Sense'. If this flag is disabled, the signal level of the amplifier will be measured periodically.

'Use PCA2014' (38)

A PCA2014 'Backup extension PC2003' add-on multiplexer PCB is connected to the analog audio outputs of the digital audio matrix PC2003.

'Backup Stations' (39)

Enter a station ID range, e.g., 500…512, to define a group of stations to be backed up. The station with the lowest number is the backup master.

'Backup Master' (40)

The backup amplifier is connected to this station.

'Pilot Tone'

Voltage of the measured pilot tone

'Resistance Earth'

Resistance of the 100V amplifier output and all connected speaker lines to earth potential in Ohm.

'Auto Gain'

Calculated pilot tone gain used to achieve the desired pilot tone voltage