Specifications

2.42

Applications Manual

Revision 1.11Prism Sound dScope Series III

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

Specification

Across the amplitude range, the THD+N for line outputs should be less than –60dBr and for

headphone or speaker outputs, less than –57dBr.

4.2.1.10 Signal-to-noise

dScope Configuration:

Signal to Noise Ratio Track 13.dsc

Track Number:

Corresponding AP Test File:

2_dnr.at2

.ac3 Test File:

2_200a60.ac3

Duration:

60 sec

Test Signal Description:

200Hz at –60dBFS

Description

This test measures the noise floor of the

EUT

relative to a notional nominal –20

dBFS

signal

amplitude. This is done in the presence of a small signal (200Hz at –60dBFS) so that the EUT cannot

mute its D/A converter.

Method

Play Track 13 and then click the

[OK]

button to start the test.