Configure the speaker lines, output matrix and the individual speaker line supervision. Display measured speaker line supervision values.

'Speakerlines' tab (D)

This area is organized in 5 sections 'Common', 'Speakerlines', 'Supervision', Measurements' and 'Details'.

Move the mouse over a header to get a short description of that.

A click on the header of the table will change the order of the table in ascending or descending order of that value.

A click in the table will highlight the whole row in the table and in the Overview area (A) the corresponding amplifier and the connected speaker lines.

Double-Click on a value to change it.

Right-Click in the table opens a dialog to change view/hide the colorized headlines and to change the visibility of the 'Details' sections.



Common 'Line #' (51)

Displays the speaker line and terminal number of a station

PC2001, PC2002 in the range of 1…4, other matrices 1…16

Common 'Name' (52)

Define a free text name of the speaker line for system overview.

Default: Speaker Line x

Speakerlines 'Active' (53)

Enable or disable a specific speaker line. Speaker lines are always active for PC2001, PC2002

Speakerlines 'Power [W]' (54)

Specify the power of the configured speaker line in watts [W]

Speakerlines 'Amp' (55)

Configure the amplifier which powers this specific speaker line in the range 1…4. Settings are fixed for PC2001, PC2002 and can't be modified

Speakerlines 'Loop' (56)

Configure two speaker lines as a loop. The first speaker line is the start of a speaker line loop and the next is automatically configured as the end of the loop.

NOTICE! A combination of loop isolators and EOL3 at one digital audio matrix is not allowed.

Speakerlines 'Priority Only' (57)

If this flag is enabled, only priority channels and no program channels will be played on this speaker line. As long as no priority channel is active, the speaker line is supervised with the internal pilot tone amplifier. Only in case of a priority call this speaker line will be routed from the pilot tone amplifier to the regular amplifier.

NOTICE! It is not allowed to set all speaker lines of one amplifier to 'Priority Only'. If so, the connected amplifier will not be supervised as long as no assigned priority channel is active.

NOTICE! The maximum speaker line load for the PC2003 internal pilot tone amplifier (sum of all 'Priority Only' channels) is 700 W.

Supervision 'Enable' (58)

Enable supervision on this speaker line

Supervision 'ReturnLine available'

Specify if a return line from the speaker line is wired. This option is only available for PC2001, PC2002

Supervision 'Type' (59)

Select the supervision type of a speaker line

  • 'Pilot Only': Measures the pilot tone voltage of an amplifier
  • 'Impedance': Measures the voltage of the speaker line
  • 'EOL3 V1.0': Uses ''EOL3 (active) PCA2004 communication".
  • 'Loop isolator': Loop start of a speaker line loop with 'Loop isolator (100V)' PCA2005
  • 'End of Loop': Return line of a speaker line loop with 'Loop isolator (100V)' PCA2005

Supervision 'Nominal Impedance – Value [Ohm]' (62)

'Impedance' selected: set the expected nominal impedance value of the speaker lines in Ohms.

Supervision 'Nominal Impedance – Tolerance [%]' (61)

'Impedance' selected: set the maximum deviation of the expected nominal impedance of the speaker line in [%]

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

Example: Value = 200 Ohm, Tolerance = 25 % V. A fault will be raised if the measured impedance is below 150 Ohm or higher 250 Ohm..

Supervision 'EOL Short circuit below [Ohm]' (62)

'EOL3' selected: set the threshold for the short-circuit detection. If the measured resistance drops below this value, a short-circuit error is detected.

Supervision 'EOL Range From' (63)

'EOL3' selected: Configure the lowest EOL3 ID of the connected EOL3s to this speaker line.

Supervision 'EOL Range To' (64)

'EOL3' selected: Configure the highest EOL3 ID of the connected EOL3s to this speaker line.

If only one EOL3 is connected use the same ID in 'From' and 'To'.

If multiple EOL3s are connected all IDs must be in a row without a gap.

Measurements 'RMS [V]' (65)

Displays the measured pilot tone of the speaker line in [V]

Measurements 'Impedance [Ohm]' (66)

Displays the measured complex impedance [Z] of the speaker line in [Ohm]

Measurements 'Quality [%]' (66)

Displays the measured quality of the speaker line in [%]

Measurements 'Line Detection State' (68)

Shows information about the electrical state of a speaker line


Speaker line is healthy and has no faults.


  • Short-circuit detected in speaker line
  • the impedance is below the set threshold



  • Open-circuit detected in speaker line
  • the impedance is above the set threshold
  • no EOL can be found


Earth-Fault detected in speaker line and has a connection <47 kohm to ground.


Short-circuit and earth fault detected in speaker line.


Open-circuit and earth fault detected in speaker line


No pilot tone signal is detected from the amplifier.


EOL3 components are missing.


Speaker line switched off for safety reasons. Possible 0 ohm short-circuit.


Supervision of the speaker line disabled.


Speaker line loop is in startup phase, no active measurement during this phase.


The measured 'Details' values can be displayed with a Right-Click and activate the 'Show Details' table.



Quality EOL3

An evaluation of the transmission quality between the digital audio matrix and the individual EOL3 modules.

Prop. Pilot Voltage

The proposed pilot tone value. The Line Detection card suggests configuration parameters, depending on the previous speaker line measurement results.

Proposed Impedance

The proposed impedance value

Nr. of Repetitions

The number of times the measurement was repeated until the result was known


ID's of the detected EOL modules.

1kHz Measurements

This section contains the results of the 1 kHz measurement.

The result of the power measurement are referring to a system voltage of 100V.


Voltage of the pilot tone signal used to measure the impedance

Real power

Measurement result.

Reactive power

Measurement result.

Apparent power

Measurement result.


Phase angle between voltage and current.