Quantum Data 780C User Manual page 221

780C Multi-Interface Interoperability Tester – User Guide
Table 12-2: List of Commands (alphabetical) – For Testing HDMI Audio in Sink Devices
Command Description
NBPA Sets the number of
bits per sample in the
SPDIF, Optical and
HDMI PCM audio.
NDAC Sets the number of
digital audio channels
for an LPCM audio
signal.
DASI Sets the digital audio
interface.
Table 12-3 below provides the list of commands supported or testing HDMI source devices:
Table 12-3: List of Commands – For Testing HDMI Source Devices
Command Description
AKSV? Shows value of source device's
AKSV (in hex) when connected to
780C Rx.
AUDA
Queries the Audio Clock
Regeneration (ACR) N and CTS
values received from a source.
September 29, 2014
Syntax Parameters
NBPA <bits> Where bits is one of:
NBPA? 16, 20, 24
<bits>
NDAC <channels> Where channels is:
NDAC? 2 or 8
<channels>
DASI <interface> Where interface is one of:
DASI? 0 = disabled
<interface>
1 = SPDIF
4 = Optical
6 = HDMI
Syntax
AKSV?
AUDA:N?
AUDA:CTS?
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Command Example
To set the audio bit depth to 24:
NBPA 24
FMTU
To set the number of channels
to 8:
NDAC 8
FMTU
To set the digital audio interface
to HDMI:
DASI 6
FMTU
Command Example
To read a source device's AKSV:
AKSV?
152BDD2533
To view the N value from a source:
AUDA:N?
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