Testing Digital Audio On An Hdtv Or A/V Receiver; Connecting The 780/780Ah To The Audio Rendering Device - Teledyne Lecroy 780 User Manual

780/780AH Handheld Test Instrument – User Guide
4.8

Testing Digital Audio on an HDTV or A/V Receiver

This section provides procedures for testing digital audio on an HDTV or A/V Receiver.
Note: It is recommended not to select bitmap images when outputting compressed audio clips.
Table 4-5 below summarizes the 780/780AH support for digital audio.
Table 4-5: Summary of Audio Signal Types
Audio Signal Type
Dolby 5.1
Dolby Digital Plus 7.1
DTS-ES 6.1
Dolby TrueHD
DTS HD Master Audio
PCM Sine Wave
(programmable)
4.8.1

Connecting the 780/780AH to the Audio Rendering Device

Use the following procedures to make the physical connections from the 780/780AH to the audio rendering
device under test.
1. Make the cable connection between the appropriate the 780/780AH video output connector (e.g. HDMI
OUT, SPDIF or OPTICAL) and the input connector of the audio rendering device using the cables supplied.
November 17, 2016
1.800.561.8187
Interfaces Description
 HDMI Provides a set of Dolby Digital 5.1 noise patterns:
Optical

500-2kHz Pink

SPDIF

 20-20kHz Pink
HDMI ARC

 Sine Wave
(780AH only)
 Impulse
Polarity

Auto Time Delay

HDMI Provides a set of Dolby Digital Plus 7.1 sine wave clips:

 2.0 192kHz – 2 channel @ 192kHz sampling rate
 5.1 192kHz – 6 channel @ 192kHz sampling rate
7.1 192kHz – 8 channel @ 192kHz sampling rate

 HDMI Provides a set of DTS ES 6.1 noise pattern clips:
 Optical
500-2kHz Pink

SPDIF

20-20kHz Pink

HDMI ARC

 Sine Wave
(780AH only)
 Impulse
Polarity

Auto Time Delay

 HDMI Provides a set of Dolby TrueHD Hi Bit Rate sine wave clips:
192kHz 7.1 1kHz TrueHD – 8 channel @ 192kHz sampling rate

 192kHz 7.1 2kHz TrueHD – 2 channel @ 192kHz sampling rate
HDMI Provides a set of DTS-HD Hi Bit Rate sine wave clips:

 192kHz 7.1 HDMA – 8 channel @ 192kHz sampling rate
192kHz 5.1 HDMA – 6 channel @ 192kHz sampling rate

 HDMI Provides programmable sine waves:
Optical

Bits per sample – 16, 20, 24

SPDIF

Sampling rate (kHz) – 32, 44.2, 48, 88.2, 96, 176.4, 192

HDMI ARC

 Channels – 2.0, 2.1, 5.1, 6.1, 7.1
 Level – 0dB to -99dB in 1dB or 3dB increments (per channel)
Frequency – 0.01kHz to 20kHz in 1Hz, 10Hz, 100Hz or 1000Hz

increments (per channel)
Mute – On/Off (per channel)

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