Specifications

2.68

Applications Manual

Revision 1.11Prism Sound dScope Series III

5.2.1.8 THD vs Level

dScope Configuration:

THD vs Level Track 63.dsc

Track Number:

Corresponding AP Test File:

5_thdlvl

Duration:

120 sec

Test Signal Description:

4kHz sweep, 0 to -120dBFS

Channels:

L, C, R, Ls, Rs

Description

This test produces a plot of the THD+N of the

EUT

against level, from 0dBFS to –120dBFS, at 4kHz.

Method

If possible, set all speakers to "large".

Play track 63 and then immediately click the

[OK]

button to start the test.

The dScope plots THD+N against time for the each channel for the 120s of the test track; this

corresponds to a sweep from 0dBFS to –120dBFS.