Vorsis VP8 Plus Instructions d'installation et d'utilisation

AN2010-01

Introduction to Vorsis VP8 Plus

(Version 3.3.0 and GUI Lite)

AN2010-01 Rev. A

January 2010 - J. Keith

600 Industrial Drive New Bern, NC 28562 USA 252-638-7000

www.vorsis.com

[email protected]

Table of Contents

Page

3 Introducing VP8 Plus

3 Hardware Installation

4 Installation and setup using the front panel

4 Navigating to the “Presets” dialog

5 Navigating to the “Modes” dialog

6 Navigating to the “Input” dialog

7 Navigating to the “Output” dialog

7 The FM Mode Output Menu

8 The AM Mode Output Menu

9 The FM-HD Mode Output Menu

10 The AM-HD Mode Output Menu

11 The AAC/MP3 >48K Mode Output Menu

12 The AAC/MP3 <48K Mode Output Menu

13 Network options

14 Finding the VP8’s software versions

15 Introducing GUI Lite

17 GUI Lite Installation on the host Windows®PC

17 Setting/resetting the VP8’s TCP/IP address

18 Device configuration-connecting to the VP8 processor

21 Setting the input source and adjusting audio levels

22 Setting the output type and adjusting audio levels

23 Taking Presets

24 Tuning audio processing – an introduction

25 Why not just one knob?

28 How the six “Tweakers” work

28 About the “AGC Depth” Tweaker

28 About the “Compression” Tweaker

29 About the “Density” Tweaker

29 About the “Loudness” Tweaker

29 About the “MF/HF Equalization” Tweaker

31 About the “LF/Warm Equalization” Tweaker

32 Some GUI Lite Caveats

33 Comparing Legacy versus GUI Lite presets

34 The two other pages of GUI Lite

37 Additional Notes on VP-8 GUI Network Connectivity

38 Locking/Unlocking the VP8 Front Panel

39 Contacting Vorsis Technical Support

40 Notes

41 GUI Pro – How to obtain “Full Control” of the VP8

Introducing VP8 Plus

VP8 Plus is a collection of deep enhancements to the Vorsis VP8

product that are included in Version 3.3.0 software. The three

essential parts of v3.3.0 software and how it is different from the

previous release, v2.4.1 are:

- New front panel setup and configuration capability. No need to have

a PC handy for installation and setup;

- Improved processing functions that improve audio consistency,

clarity, and overall loudness while lowering distortion;

- A new simplified graphical user interface (GUI) software program,

GUI Lite, which morphs the VP8’s more than 230 controls into just six.

Any VP8 in the field can be upgraded to Version 3.3.0 by a simple to

perform software update. A new front panel acrylic equipped with the

“Plus” moniker may be ordered by contacting Vorsis Technical Support.

Hardware Installation

Please see the VP8 manual located on the product CD shipped with the

VP8 for detailed instructions on installing the product in your facility.

The manual is supplied in PDF format for ease of viewing and printing.

The VP8 is shipped from the factory with a default IP address of

192.168.1.198. Please follow the steps below noting that if the VP8’s

default IP address of 192.168.1.198 will work on your network you

should skip to step 11.

IMPORTANT NOTE:

Due to the normal settling time of the BS-412 Multiplex Power

Algorithm (currently used in certain countries in Europe) the VP8

may not reach its final loudness for about one minute after power

up, regardless of whether or not the BS-412 algorithm is engaged.

A future software update will remedy this issue.

Installation and Setup using the Front Panel

VP8 Plus is equipped with new front panel menu navigation functions

to permit installation and configuration without needing a computer.

The menu is navigated by the rotary encoder knob and illuminated “V”

button. The items in the list are arranged in tree form in order to make

navigation simple and logical. The menu is structured so that the

Preset selection item is always at the top of the tree. Logically the

navigation list is as follows:

- PRESETS

- MODE

- INPUT

- OUTPUT

- NETWORK

- VERSION

- ACCESS

An item called “<<MENU” or “EXIT” is always present at the end of a

list to enable backing out of the currently selected item by one level.

The “Output” menu item radically changes as the VP8 mode is changed

due to large differences in the controls present in the various operating

modes. In the following pages the front panel navigation will be

examined in more detail.

NOTE: Please use the detail shown in the following sections to

determine where the appropriate setup controls will be for your

particular VP8 operating mode and installation type.

PRESETS

The first menu item in the list is PRESETS which allows scrolling

through the list of mode-specific factory (and/or user) presets stored

on the VP8 hardware. Once a preset is decided upon, pressing either

the knob or the lighted “V” pushbutton will select that preset to be

active. The active preset will be display in the front panel

alphanumeric display and will scroll if the name is longer then eight

characters. The VP8 will respond with “TAKEN” when the preset is

loaded and running.

MODE(s)

The VP8 is equipped with six completely different operating modes:

FM-HD

AM-HD

AAC/MP3 >48k

AAC/MP3 <48k

MODE

•FM, complete with stereo generator.

•AM, complete with asymmetrical limiting and selectable

lowpass filters and analog transmitter equalization.

•FM-HD, with codec-optimized pre-processing.

•AM-HD, with codec-optimized pre-processing.

•AAC/MP3 > 48k (specialized processing for codecs utilizing

greater than 48 kHz bitrates).

•AAC/MP3 < 48k (specialized processing for codecs utilizing

less than 48 kHz bitrates).

NOTE: THE VP8 OUTPUTS WILL MUTE WHILE CHANGING MODES!

When a new operating mode is being loaded into the VP8’s memory

the audio outputs will go silent and will remain silent until the new

algorithm is loaded.

This is intentional behavior that prevents clicks, pops and other

disturbing audio discontinuities from appearing at the VP8 outputs

while the new mode’s processing algorithms being loaded into the

DSPs and started up.

INPUT

The INPUT menu item allows the appropriate audio input type to be

selected whether Analog or Digital and also allows independent input

gain adjustments to be made for each of the two input types.

DIGITAL

ANALOG GAIN

INPUT SOURCE

DIGITAL GAIN

ANALOG

We strongly recommend that peak input audio levels are never set so

that they peak higher than about -12dBFS as shown on either the GUI

or the VP8’s front panel meters.

This is caution is necessary to allow appropriate headroom for the

processing algorithms when they are presented with material that has

been highly compressed and possibly also clipped during the mastering

process. Such material can achieve far higher peak levels after the

first stage of signal processing (in any modern audio processor, not

just Vorsis!) and those signals may not have enough headroom to

avoid clipping within the processor if the input level was already too

high.

Said another way, if you hear mysterious distortion or what sounds

like clipping on very loudly mastered material it’s a good idea to check

the input levels to the VP8 to ensure they are not spending any

significant time at levels of -12dBFS and above. GUI Lite has a “Ref”

indicator on its input level meter at the -12dBFS calibration mark as a

convenient reminder.

OUTPUT

The output menu tree is tailored to the current VP8 operating mode,

with the most complex being the FM and AM modes due to their

specialized processing requirements. The output menu trees for each

of the six modes follows along with the corresponding GUI Lite output

menu below it for comparison

L/R DE-EMPH

TX 1 LEVEL dB

OUT MODE MPX

TX 2

SCA 1 LEVEL dB

PREDELAY

INPUT

SCA 2 LEVEL dB

TX 2 LEVEL dB

DIGITAL INPUT

DIGITAL LEVEL dB

ANALOGOUT

ANALOGLEVEL dB

SCA 1

75uS

ANALOGINPUT

OUT

TX 1

PILOTINJ %

50uS

FLAT

DIGOUT

OUTPUT

(FM) L/R

SCA 2

DE-EMPH

HEADPHONE SOURCE

PRE-EMPH

PILOT

ANALOG

FM Mode

AM Mode

M/S

4.5kHz

PRE-EMPH

6.5kHz

DIGOUT

ANALOG1

MONO

INPUT

ANALOG2

DIGITAL INPUTFULL

POSMOD

OUT MODE

NRSC

HEADPHONE SOURCE

5.0kHz

6K CCIR

DE-EMPH

OUTPUT

(AM)

LEVEL dB

ANALOGINPUT

PHASE

PREDELAY

LEVEL dB

5.5kHz

B-WIDTH FLAT

ANALOGOUT

STEREO

10kHz NRSC

7.5kHz

DIGITAL LEVEL dB

100-150%

OUT

PHASE

AM Mode Output Controls

FM-HD Mode

L/R Swap

HEADPHONE SOURCE

OUTPUT

(FM-HD)

PHASE

ANALOG INPUT

DIGOUT

LEVEL dB ANALOGINPUT

DIGITAL INPUT

PREDELAY

ANALOGOUT

DIGITAL LEVEL dB

FM-HD Mode Output Controls

AM-HD Mode

DIGITAL INPUT

HEADPHONE SOURCE

ANALOGOUT

DIGITAL LEVEL dB

ANALOGINPUTOUTPUT

(AM-HD)

INPUT

ANALOG LEVEL dB

L/R Swap

PREDELAY

DIGOUT PHASE

AM Mode Output Controls

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