Leitch X75HD, Руководство по эксплуатации продукта

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this option provides entropy reduction prior to encoding. The SDTV NR has one field of propagation
delay. There is a minimum delay mode which has a propagation delay of one-line and 26H samples.
Can there be different logos with separate on/off control on the HDTV output and SDTV output?
Yes, there can there be different logos with separate on/off control on the HDTV and SDTV outputs.
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Audio Questions
What technique is used for analog to digital audio conversion?
24-bit resolution, 48kHz sample rate converted with optional audio to video timing tool
What technique is used for audio de-compression?
Optional plug-in for Dolby Digital and E.
What audio cables are included?
The unbalanced are included. The balanced are optional. The unbalanced/balanced are optional.
Is the optional Dolby E and DIGITAL (AC-3) decompressor professional or consumer grade?
The optional Dolby E and DIGITAL (AC-3) decompressor is professional grade.
What is the default impedance of the audio module?
100k ohm on the inputs and 66 ohm on the outputs (can be jumper selected for 600 ohm on the input
and output).
Does the X75 have a DARS (Digital Audio Reference Signal) input?
Yes, on the audio option.
What is the acceptable range of audio input sample rates?
Input audio rates accepted by the X75 are 32 kHz to 96 kHz sample rate.
Does embedded audio pass through the X75 when there is no embedded audio option?
For embedded audio on SD-SDI inputs, the embedded audio will pass through.
For embedded audio on HD-SDI inputs, the embedded audio will not pass through.
Using the 8 channel audio option.
The X75OPT-AS-8 (included in X75SD-AV versions) provides two groups (8 channel) embedded
audio processing. When processing one SDI signal, embedded audio from the SD-SDI input can be
processed with the analog (4 channels) and digital (2 AES, 4 channels) audio and embedded on both of
the SD-SDI outputs. When using the M-PATH mode for dual SDI processing, embedded audio from
one of the SD-SDI inputs can be processed and embedded on both outputs.
Using the 16 channel audio option.
The X75OPT-AS-16 (included in X75HD-AV versions) provides four groups (16 channel) embedded
audio processing. Embedded audio from the HD-SDI input and SD-SDI inputs can be processed with
the analog (4 channels) and digital (5 AES, 10 channels) audio and embedded on both HD-SDI and
SD-SDI outputs.
If we use a DOLBY AC-3 encoder, is there enough video delay (7 frames)?
Yes.
Can the Dolby-E decoder module be field upgradeable?
Yes.
X75 Product Guide Frequently Asked Questions • Page 49