QSC USL DAX-202 Handleiding

QSC Niet gecategoriseerd USL DAX-202

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DAX
DAX-
-202
202
User Manual
User Manual
USL, Inc.
USL, Inc.
181 Bonetti Drive
San Luis Obispo, CA 93401
Phone: +1 805 549 0161 Fax: +1 805 549 0163 www.uslinc.com
DAX-202 User Manual
Page 2
DAX
DAX-
-202 USER MANUAL
202 USER MANUAL
Introduction
Hearing impaired audio has traditionally been generated by the cinema
processor as a mix of the left, center, and right audio channels. With digital
cinema, it is possible to include a separate hearing impaired (HI) and visual
narration (VI-N) track in the digital cinema package. Most digital cinema
servers place the HI/VI-N pair on AES channels 7/8 or AES channels
15/16. If your existing cinema sound processor does not convert these AES
signals to analog to drive your HI/VI-N system, a digital to analog converter
such as the DAX-202 is required.
AES audio using either the Dolby DMA8 or DCI pinouts is looped through
the DAX-202 on its way to the cinema sound processor. Typically, the DAX
-202 is located near the sound processor. The existing AES cable is un-
plugged from the cinema processor and plugged into the DAX-202. A 25
conductor jumper cable then connects the DAX-202 to the sound proces-
sor. The AES audio is "looped through" the DAX-202.
DIP switches inside the DAX-202 determine which pins on the DB25 con-
nector the HI/VI-N audio will be connected to. As mentioned above, this is
typically 7/8 or 15/16, but the DAX-202 provides several other options as
well.
The HI track in a digital cinema package is "dialog centric" audio that may
include the dialog at a higher level than the main audio, may include spe-
cial equalization, or may include compression. However, not all content
includes an HI track. Because of this, it is currently "safer" to use the exist-
ing HI output of the cinema processor to drive the HI portion of the HI/VI-N
transmitter. The DAX-202 includes a terminal that must be grounded to use
the HI audio from the AES pair. If this terminal is not grounded, the DAX-
202 audio output is driven by the HI audio output from the sound proces-
sor. The control terminal may be permanently open or grounded, or may
be driven by an open drain output or contact closure from the server or
cinema sound processor to change the source of the HI audio "on the fly."
Description
The DAX-202 is designed to process signals for Hearing Impaired (HI) and
Visual Narration (VI-N).
AES sources may be selected from a DB25 or BNC connector. The DB25
connectors are pass-through configured; either may be used as an input or
output.
The HI/VI-N signals can be sourced from either DCI or Dolby pin configura-
tions.
DAX-202 User Manual
Page3
Source DB25 pins
Dolby 7/8 6 / 19
DCI 7/8 7 / 20
DCI 15/16 1 / 14
DCI 9/10 18 / 6
DCI 13/14 15 / 3
BNC —
Setup
1. Using the chart below, determine where the HI/VI-N AES sources will
come from.
2. Remove the four cover screws holding the DAX box together.
3. Close the PAIR of DIP switches that correspond to your source selec-
tion. See Figure 3.
4. Replace the cover screws.
5. Connect the HI output of the cinema processor to the HI input on the
Phoenix connector.
Assemble the Phoenix Connector Plug as Required:
6. Connect the VI-N and HI outputs to the IR or RF transmitter. If the
system has an unbalanced input, be sure to jump the “ - ” signal output
Pin Function Comments
1 VI-N + (Output)
2 VI-N - (Output) Connect to Gnd for unbalanced
3 Gnd
4 HI - (Output) Connect to Gnd for unbalanced
5 HI + (Output)
6 Earth Gnd
7 HI - (Input) Connect to Gnd for unbalanced
8 HI + (Input)
9 HI CTL (Control) Connect to Gnd for AES
10 Gnd

Product specificaties

Merk: QSC
Categorie: Niet gecategoriseerd
Model: USL DAX-202

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