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privacy. The report is shown in the Masking Equalizer control box

and is stated in terms of change to the Privacy Index. A change

must be at least 1% for it to display. The calculation is performed as

specied in “ASTM International; Designation: E1130-02, Standard

Test Method for Objective Measurement of Speech Privacy in Open

Ofces Using Articulation Index”.

Figure 15: Operations Section with the equalizers block displayed after a higher

level password has been entered.

ENFD (Emitter Network Fault Detection)

The ENFD is a feature used after installation to monitor the status

of the emitter cable runs. As shown on the screen, the installation

should be complete without defect before the ENFD feature is

enabled. The installation is complete by following the steps for

installation, ensuring all the emitters are working and there are no

error codes displayed.

The ENFD feature will start taking measurements of the cable runs

after power is applied. It will take 15 minutes after booting to learn

the emitter network and determine the steady state of the system.

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CAMBRIDGE QT Installationsanleitung Seite 31