junger C8000, C8492, C8492B User Manual

C8092_manual_EN_160219.doc

C8000

digital audio
modular
processing system

C8092

16 channel DSP

Features

• 4 processing channels

• Level Magic™ loudness management

according to: ITU-R BS.1770 (all revisions),
EBU R128, ATSC A/85, ARIB TR-B32,
Free TV OP-59 and Portaria 354

• Expander / compressor

• Stereo fail over

• True Peak limiter

• Remote control via GUI, GPI/Os, Ember+

protocol

Options and Variants

• 8 / 16 processing channels

• Surround processing

- 5.1 Level Magic™

- Automatic Upmix

(from stereo or mono)

- Surround fail over
(via Upmix)

- Downmix

Block diagram

C8492 Carrier Board

SYNC

System sync

inertface

MODULE CONTROLLER

CAN-BUS

interface

System bus interface

32 lines I/O (2/8 Ch mux)

Audio Router

GPI/O

handling

Routing

control

Frame Controller

commmunication

Preset

management

Front Panel

status display

STATUS
BYPASS
LOCK

LED

DSP

control

16 Ch

16 Ch

Junger DSP Algorithms

* Expander
* Compressor
* Level Magic
* True Peak Limiter
* Stereo Fail Over
* 5.1 Option
Upmix
Surround Fail Over

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The C8092 is a variation of the next generation module platform. The C8092 can be purchased as a
four / eight or 16 channel processor (C8092-x) with surround option (C8092-xS) or without it.
It offers a 16 channel audio processor that is beyond a successor of the C8086+ since it combines
LevelMagic loudness control with stereo and/or surround fail over functions inluding 5.1 downmix
and 5.1 upmix.

Technical specifications

Power Supply 5Vdc (4.75 … 5.25V), max. 1.200mA
Dimension 3RU, 4HP, 160mm depth (DIN41612 backplane connector)
Environmental Operating temperature 0 … 40ºC,

Non-operating -20 … 70ºC,
Humidity < 90%, non-condensing

General Features

• 16 processing channels

• Upmix

• Surround Fail Over

• Stereo Fail Over

Location of switches:

INIT

1: BUS-EN
2: H-CAN
3:
4: ID+16
5: MASTER
6:

SW1 ADDRESS

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Initial set up

ADDRESS: This rotary encoder sets the CAN ID of the C8092. The 16 switch positions

are hexadecimal numbers (0x0 to 0xF). The CAN address also defines the
location of the module icon within the GUI overview of rows three to six.

SW1:

#1 BUS-EN ON = The output configuration will be taken from the NV (non volatile)

memory after power up.
OFF = will set all bus outputs to Tri-State-Mode (inactive).
Now you may use the frame controller to configure the board.
This configuration will automatically be stored into the NV memory
To enable the configuration for the next power up you must

pull out the module and set BUS-EN=ON again.

Important note! Since this type of module has an electronic output routing facility, great care must be
taken when installing or exchanging a module when such frame has components which are On Air!
If an unknown output bus configuration is stored, it can cause a conflict with other modules in the frame.
If you are not sure about the output bus configuration you must turn BUS-EN=OFF before inserting such a
module into a system that is On Air. If all settings are done remotely and the unit fits into the bus
assignment scheme of that frame, you must remove it and place the switch back into position

BUS-EN=ON to activate this setting for the next power up(s).

#2 H-CAN OFF = CAN bus speed 256kBit/s

ON = CAN bus speed 1Mbit/s

Important Note! For a limited number of modules like the C8092 it is possible to communicate with a

CAN bus speed of 1MBit/s. This provides more bandwidth to move measuring data from the module via
the frame controller to the J*AM based loudness logger. Be sure that all modules within a frame are
operating with the same CAN bus speed.

#3 OFF = Internal use and must be set to OFF.
#4 ID +16 OFF = CAN bus address range is standard (counting from 0x0 to 0xF)

see rotary encoder settings above.

ON = CAN bus address range is extended by +16

(counting from 0x10 to 0x1F).
#5 MASTER OFF = Internal use and must be set to OFF.
#6 OFF = Internal use and must be set to OFF.

INIT Pressing the INIT button during power up will initialize the module

parameters to factory default values.

General Remark! The C8092 is a 16 channel device. Four channels are standard while
eight or 16 channels are an option. Since the parameters are similar, this document describes the
16 channel processor version. The difference will be the number of fail-over circuits (one for the 4ch, two
for the 8ch and four for the 16ch option) and that the surround option is bound to eight or 16 channels.

The (S) option stands for 5.1 surround processing. If this option is unlocked you may also perform
permanent surround upmix from a stereo or even a mono source or you may use the upmix
for surround fail over. A 5.1 downmix from the surround input is also available then.

This manual describes the C8092-16S because all other members of the family have a subset of features
and options.

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Web browser based GUI

OVERVIEW

The module overview of a frame (below the display of an example frame):

By simply clicking on the spanner tool symbol you will get the control pages of the C8092 and the
status pane on the left hand side, which is also shown on mouse over.

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STATUS PANE

The status area is quite big for the C8092 so you may face difficulties when displaying it on lower
resolution displays. You may shrink it by pressing on the little "fly foot print":

Now some information are suppressed and you are able to see the
most relevant status information without the need to put the browser
into full screen mode.

C8092 DEVICE 01 - Given name of the module (may be changed on the

DEVICE pane). It will be default set during initialization to module type

amended by the word DEVICE and the CAN address 01 the module had at

that moment.

System name of the module and short description.

DSP Preset "Name" of the actual loaded preset

Routing/SDI Preset "Name" of the actual loaded preset

Failover/Upmix Preset "Name" of the actual loaded preset

BYPASS [grey / red]

DSP1 DSP2 turns red if a bypass is activated

Bit Transparent shows the bit transparent status of the

Ch 01/02 … 07/08 respective DSP channel pairs

Ch 09/10 … 15/16

Failover/Upmix turns green if function is active

A B Upmix 1

C D Upmix 2

Bus/Input Status Error status of the bus inputs (see

ROUTING)

Processing Status turns green if observation of processing

status is enabled. Turns red if processing
status is bad (see DSP1-A Processing
Status Enable)

Temperature Module temperature measured on the

carrier board

Metering clicking on that symbol will open the applet

to display meter bar graphs (see page 24
for an example) for the DSP processing
channels.

Front panel Status LEDs color code

off green flashing green red flashing red

STATUS

never OK OK, GUI access boot error boot error,

GUI access

MODE

if STATUS
= red

at least one
program active

all programs
bypass

never never

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PRESETS Example for the C8092-16S

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The C8092 has 3 banks of Presets: DSP / Routing / Failover/Upmix
The status window on the left hand side shows the names of the active presets. The word “modified”
will appear in line with the preset name if any preset parameter was changed since loading this preset.

DSP Is dedicated to audio processing (Leveler, Compressor / Limiter /

Expander).

Load Select a preset by name and press <LOAD>.

Loaded from preset The soft LEDs show the channels which will be controlled by the
active preset. The number of soft LEDs depends on the program

configuration. E.g. channels 1-6 are represented by one soft LED
because they belong to a 5.1 program while 7/8 represent a stereo
program as well as 9/10 and 11/12. Channels 13, 14, 15, 16
belong to mono programs whereas channel 15, 16 are not part of
the preset currently loaded.

Here another example where channels 15 and 16 are not part of

the actual loaded preset:

Save as # Select a preset NV memory number.
Name Assign the preset a name (up to 16 digits).

and press <SAVE>.

Channels stored The check boxes define which channels will be stored when you
in presets save a preset. The number of check boxes depends on the

program configuration.
Here an example where DSP1 (Ch 1 – 8) is set for 5.1 + 2
operating mode and DSP 2 (Ch 9 – 16) is set for 4 x 2 operating
mode. Ch 9/10 and 11/12 are linked for stereo operation and
13, 14, 15, 16 are not linked (mono mode).
The parameters of channels 15 and 16 will not be stored:

ROUTING controls the bus routing.

Load Select a preset by name and press <LOAD>.
Save as # Select a preset NV memory number.
Name Assign the preset a name (up to 16 digits).

and press <SAVE>.

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FAILOVER/UPMIX The third group (#33 … #40) is intended for fail over and upmix

parameters.

Load Select a preset by name and press <LOAD>.

Loaded from preset The soft LEDs show the Fail Over circuit(s) controlled by the preset

currently loaded:

I.e. a preset may change the parameters for one 2ch fail over

without changing the parameters for another one.

Save as # Select a preset NV memory number.
Name Assign the preset a name (up to 16 digits).

and press <SAVE>.
Processing blocks The check box(es) define from which processing block parameters

stored in preset will be stored next:

The number of processing blocks involved depend on the operating

mode for the DSPs.

Preset Clipboard <COPY TO CLIPBOARD> copies the active preset to a clip board,

the data may be used by other modules inside the same frame.

Backup Presets to File <BACKUP> creates a backup XML file which may be saved

on a PC.

Restore Presets from File <Browse… > opens a file dialog to select a previously stored

preset file. <RESTORE> will upload the file and overwrite existing
presets for this module.

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DEVICE

INFO

Device Name You can assign the module an individual name (up to 16 digits).

Press <CHANGE NAME> to make the new name effective.

Platform [C8092-1]
Hardware platform of the module.

Parameter Version [x]

The firmware of the module undergoes revisions where parameters

may be added while others become obsolete. The parameter
version indicates it.

Important Note! It is mandatory to initialize the module to factory defaults if the parameter version has
changed in order to clean the memory from rubbish data. Otherwise you may experience
malfunctions.

FIRMWARE displays the firmware versions of the C8092 components:

Controller The module controller
DSP The processing DSP
FPGA The routing and audio interface for the DSP

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RESET

Restart Module Pressing <RESTART> performs a warm start (soft reset)
Initialize and Restore Pressing <INITIALIZE> restores the factory default values for all

Factory Defaults parameters of the module including all presets. You will lose

your presets and settings. It's highly recommended to backup the
settings and presets to a PC first.

BACKUP / RESTORE

Backup Settings and Pressing <BACKUP> will put all active parameters and the
Presets to File content of all presets into an XML file.

You may store such file on a PC.

Restore Settings and You may browse a matching XML file from a PC.
Presets from File Pressing <RESTORE> will overwrite all active parameters and the

content of the presets with the content from the backup file.

ROUTING

The bus interface allows for very flexible interconnection from and to the c8k audio busses, either in
two channel or eight channel multiplex mode. The inputs to the DSPs (Ch 01/02 … Ch 15/16) exclude
each other (see example below). You can select a specific DSP input pair from the c8k bus either in
2ch [S1 … S4] or eight channel [S5] mode. When you select an input bus that is fed up-stream
in 8ch mode [S5] you must also select a signal pair from that bus [Ch1/2, Ch3/4, Ch5/6] for a dedicated
DSP input:

Similar applies to the output routing. [S9] is fed in 8Ch and [S10] in fed 2Ch mode.
Duplicated busses [S11] are marked red as a warning because the signal will be disturbed if you
connect two outputs [Ch 01/02, Ch 09/10] to the same bus.

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Audio Routing & Processing

From C8000 System Bus Select a 2ch or 8ch (multiplex) mode bus as an input for the DSP.
To C8000 System Bus Decide between 2ch or 8ch (multiplex) mode and assign a bus to it.
Enable Bus Input [ON / OFF]

Error Detection The serial audio data from the frame bus can be monitored for

proper positioning of an Error-Flag. A bad Error-Flag is an
indication that there is disturbance upstream (input signal, input
module). The Error Detection can be turned off and on in
general. Each input in use will automatically be observed. You
will see the status on the left hand side:
“Bus/Input Status”. A grey soft LED shows that the detection is
disabled. While green is OK, red indicates an error condition.

The bus status may be presented to external monitoring systems
via SNMP. The frame controller summarizes such status
information and generates SNMP traps for the frame as an entity
or may activate GPOs (if a GPI/O module is installed).
The SNMP manager may afterwards poll the “modulesStatus”
for more detailed status information per input (see SNMP
documentation for details).

Enable Bus Driver [ON/OFF]

You can disable the output drivers by un-checking the

Enable Bus Driver check box. The state of this check box also
depends on the setting of SW1 on the PCB.

If SW1 #1 is turned off, this checkbox will be off after a power

cycle. You can turn it on temporarily to check out your settings but
you must keep in mind that after the next power cycle it will be off
again unless you have turned SW1 #1 on.

This procedure is useful if you must insert a module into a frame

that is on air and other services must not be interrupted or
disturbed.

Important Note! The remainder of this manual refers to the C8092-16 version

(16 channel and surround license enabled). Some settings are impossible for a four channel license,
but the parameters for the audio processor are the same.

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SETUP

This page shows the function blocks which are available for the respective programs. The display
depends on the program configuration of the DSPs. Below an example where
DSP 1 is configured for 5.1 + 2 whereas DSP 2 is configured for 4 x 2 program processing:

Alternative Input Due to the fact that the DSP is fed in 2Ch mode and in case of
Channel Allocation surround operation it is possible to select between the standard

TV broadcast (L / R / C / LFE / Ls / Rs) and the alternative movie
picture (L / C / R / Ls / Rs / LFE) channel allocation.

Alternative Output See above
Channel Allocation

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Important Note! The available number of processing channels depends on the license that is enabled for
the particular module. Here is an example for the basic configuration that has four processing channels
only (no channel license is enabled):

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DSP 1A - 4 x 2 mode

From here you can control the audio parameters of the C8092 function blocks.
For detailed explanation of the LevelMagic parameters pls. see the separate document:

Junger_Processing-Parameters_xxyyzz.pdf which you may download from our web site.

Operating Mode [5.1 + 2 / 4 x 2]
defines the number of audio channels which are used for one audio

program. All relevant processing blocks will be configured to meet
the selected mode.

Loudness Control Mode [Level / ITU BS.1770-1, -2, -3, -4 / EBU R 128 / ARIB TR-B32
ATSC A/85 (2011 7 2013) / Free TV OP-59 / Porteria 354]

Bypass [ON / OFF]

The processing parameters will be bypassed to validate the actual

settings. If enabled, the respective Bypass DSP1 or DSP2 soft
LED turns

red in the status panel:

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Link [Unlinked / Linked]
defines the coupling of the control circuits in order to maintain the

listening balance for correlated signals or to provide a grouping of
the setup parameters for multi channel signals.

Input [ON / OFF]

Input Gain [-20 … +20 dB]
Input Delay Coarse (ms) [0 … 2000]
Input Delay Fine [0 … 255]

(samples)

Leveler [ON / OFF] turns off Transient Processor as well.

Processing Profile [live / speech / pop / classic]
Loudness Target (dBFS) Level mode [0 … -50]

(LKFS) ITU mode [0 … -50]

(LUFS) EBU mode [0 … -50]

Time (s/min/h) [10, 20, 40 sec. / 1, 2, 5, 10, 20, 40 min / 1, 2 h]
Max Gain (dB) [0 … 40]
Freeze Level (dBFS) [-20 … -60]

Transient Processor

Max Gain (dB) [0 … 40]
Response [soft, mid, hard]

Limiter [ON / OFF]

Processing Profile [live, speech, pop, uni, classic]
Max True Peak (dBTP) [0.0 … -20]

Expander [ON / OFF]

Threshold (dBFS) [-60 … -20]
Range (dB) [0 …. 20, Gate]
Release Mode [0 / 1 live / 2 speech / 3 pop / 4 uni / 5 / 6 classic / 7 / 8 / 9]

Compressor [ON / OFF]

Reference Level (dBFS) [0 … -40]
Range (dB) [0 … 8 …. 20]
Ratio [1: 1.1 … 1: 4.0]
Processing [0 / 1 live / 2 speech / 3 pop / 4 uni / 5 / 6 classic / 7 / 8 / 9]

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Proc Status Enable [ON / OFF]
If the average gain of the module is equal or above the

Leveler Max Gain for more than 10s the respective
Processing Status soft LED turns red. This status information is

condensed for all processing channels by the module controller.
The frame controller will condense the status information for all
processing modules within a frame and may generate a SNMP
trap and/or fire a GPO. In this case the SNMP manager may poll
the frame for details to “see” which processing channel sticks.

Bit Transparent [off / on]
indicates that a channel pair is in bit transparent mode

to let non audio signals pass through without the DSP processing
to maintain data structure for non audio signals.

Expert [show / don't show]

The expert mode offers the possibility for manual intervention of the
adaptive behavior of the LevelMagic process for critical material.
For details pls. see the above mentioned document.

Clear Processing History manually or GPI controlled
(Preset) [disable / enable]
defines if the switch is included in a preset. This allows clearing the

processing history if a preset is loaded.

Initial Dynamic Gain (dB) [-40 … 1 … 15]
Start value for the LevelMagic process after Clear Processing

History.

AGC Recovery [normal / fast]

Low Level Behavior

Processing Threshold [-80 … -70 … -20]
(dBFS) The threshold from where the processing gain will behave as

defined by Below Threshold Mode.

Below Threshold Mode [release, hold]
returns slowly to 0 dB gain change or stays at the Processing

Threshold.

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DSP 1B – 4 x 2 mode

The C8092 offers the feature to use pairs of channels in a fail over mode. I.e. if the audio signal fails in
the first audio pair, the processor may switch over to the adjacent (e.g. 1/2 >> 3/4) pair automatically.
The functions of the circuits Failover A – Failover B are similar.
The switch over will be performed by a cross fade.

Failover A

Mode [Primary / Secondary / AUTO]

Selection between both inputs and the auto mode.

Dual Mono [OFF / AUTO]
If the fail over input is fed by a dual mono signal, the circuit may

automatically copy the opposite one if one fails.

Fail Threshold (dBFS) [-60 … -40]

Trigger threshold for the fail detector.

Fail Wait (s) [1.5 … 10.0]

Time from detection of an audio loss to the moment of switch over.

Fail Return (s) [0.0 … 10.0]

Time from the detection of an audio until switch back.

Side Chain Filter [ON / OFF]
A high pass filter (300 Hz) and a low pass filter (3000 Hz) are applied

to the detector side chain (not the audio path) to prevent hum and
noise from blocking fail over switching.

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DSP 2A – 5.1 + 2 mode

As mentioned above there is also a 5.1 + 2 program configuration available if you have bought the
surround option for the C8092. In this case the first 6 channels of the DSP are linked for surround
processing. This will also apply to DSP 1 if 5.1 + 2 is selected. The example above shows a condition
where the LFE is not linked to the other surround channels and may be controlled independently.

The remaining two channels may be used for an independent stereo audio program or for two mono
channels. Above it is linked for stereo operation.

Depending on the loudness control mode, the link options are different. While ITU defines a certain link
condition for loudness control and measurement, the proprietary Junger "Level" mode allows for more
detailed link variances. The screen shot below shows the most sophisticated MOVIE mode:

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DSP 2B – 5.1 + 2 mode

If you have bought the surround option you will get the option to do an upmix either for permanent
operation or as a fail over feature to maintain a surround image if the input surround signal disappears.
Also a downmix block is available that can be used to feed a stereo program path or it may be used as
a fail over source for the stereo path.
Beside the upmix algorithm, the upmix block has a surround detector that will decide if an input
surround signal has disappeared under certain conditions:

Fail Over C (Upmix) This can be used to provide a two stage fail over in case of upmix.
The upmix source signal can be either the incoming L/R surround pair

"Primary" or an extra two channel input "Secondary".

If the surround input is driven by an upstream Dolby E decoder and the

signal changes from decoded D-E to PCM stereo on L/R, this stereo
will for example be used as an upmix source. But it may also be
desirable that in case surround fails a different input is used as the
upmix source or the upmix is performed permanently from the
secondary input.

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Mode [Primary / Secondary / AUTO / AUTO no Upmix]

You can select between one of the 2ch inputs and the auto mode and
auto mode with upmix disabled (e.g. for path through of
announcements).

Dual Mono [OFF / AUTO]
If the fail over input is fed by a dual mono signal, the circuit may

automatically copy the opposite one if one fails.

Fail Threshold (dBFS) [-60 … -40]

Trigger threshold for the fail detector.

Fail Wait (s) [1.5 … 10.0]

Time from detection of an audio loss to the moment of switch over.

Fail Return (s) [0.0 … 10.0]

Time from detection of an audio loss until switch back.

Side Chain Filter [ON / OFF]
A high pass filter (300 Hz) and a low pass filter (3000 Hz) is applied to

the detector side chain (not the audio path) to prevent hum and noise
from blocking fail over switching.

Surround Detect To perform an automatic upmix in case the main surround fails.

Switch [AUTO / FIX Surround / FIX Upmix]

The surround switch may be permanently [FIX] connected to the

surround input or the upmix output but it may also perform an [AUTO]
switch over in case the surround input fails.

Detection [Center / Surround / Center or Surround / Signal loss]
Here you can decide which channels must be observed for signal loss

to operate the surround switch.

Fail Threshold (dBFS) [-80 … -70 … -40]
If the RMS weighted input level drops below this value a fail signal will

be generated.

Fail Wait (s) [0.0 … 10.0]
Time from detection of an audio loss to the moment of switch over.
The return from the fail condition (in case surround comes back) will

be immediate.

Downmix

Out Gain (dB) [-20 … 0 … 20]
Center Mix Level (dB) [-12.0 … -3.0 … 0.0]
Surround Mix Level [-12.0 … -3.0 … 0.0]

(dB)

Options

Latency Compensation [OFF / ON]
Since the upmix has a certain latency (see Upmix > Processing Time)

it can be compensated automatically for the stereo pair to avoid lip
sync issues between an upmixed surround and the stereo path.

Failover D (Stereo)

Mode [Prinmary / Secondary / AUTO]

The second fail over circuit can take the downmix as a fail over source

in case the input signal fails. But it may simply put the downmix
through permanently (Mode switch is set to Secondary).

The other parameters are already described in the DSP 1B section.

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Upmix

Enable [OFF / ON]
Upmix Mode [Mono / Stereo / AUTO]
Profile [1 Front Projection, 2 Emphasize Front, 3 Balanced, 4 Emphasize

Surround, 5 Wrap Surround]

1 Front Projection – Optimized for a stable surround image,

independent of correlation of the input signal. Opens a stage-like
presentation over the front speakers and uses the rear channels for
ambience creation.

2 Emphasize Front – Based on setting 1 with a less strict front

projection.

3 Balanced – A balanced distribution of the signal between the front

and rear channels, without overemphasizing the rear channels.

4 Emphasize Surround – The distribution between the front and rear

channels is highly dependent on the correlation of the input signal.
Highly uncorrelated signals may create emphasized surround
channels.

5 Wrap Surround – Even distribution of the signal between all

channels, to create a feeling of being ‘wrapped in sound’ to create
spectacular effects.

Processing Time (ms) [3 … 100]

The processing time has great influence on the quality of the upmix

process but of course alters the latency of the audio signal. It is
highly recommended to allow as much processing time as possible.
E.g. one can e.g. increase the processing time instead of adding
audio delay to compensate for a delayed video line. Depending on
the system latency requirements (ingest vs. live broadcast) you may
change the processing time accordingly.

.

Center Divergence [0.0 … 1.0]
The upmix process assembles a center signal from the input stereo.

It may either be fed to the center channel only (0.0) or spread
between L/R (1.0). The effect will be a wider presentation of center
signals in a surround sound image. Please note that the signal does
not completely disappear from one source (L/R or C), depending on
the selected profile.

Surround Gain (dB) [-24.0 … 0.0]

Sets the level of Ls/Rs channels.

Surround Balance [0.00 … 1.00]
Stereo defines the amount of direct sound mixed into the surround

channels.

0.0 provides pure ambient sound while 0.1 to 1.0 will increase the

amount of direct sound. Works only if upmix mode is set to stereo
or switched to stereo in auto mode.

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Surround Balance [0.00 … 1.00]
Mono defines the amount of direct sound mixed into the surround

channels.

0.0 provides pure ambient sound while 0.1 to 1.0 will increase the
amount of direct sound. Works only if upmix mode is set to mono or
switched to mono in auto mode. For auto mode lower values (0.2 –

0.4) are recommended to prevent unwanted effects when auto
switching between Mono and Stereo.

LFE Enable [OFF / ON / Effect Gate]
You may turn this option on if the upmix process is to generate a

subwoofer signal that will appear in the LFE channel. When using
the Effect Gate function the system interactively processes the
subwoofer signal and generates a signal that comes very close to a
real LFE signal, without creating permanent rumble and bass
excitation.

LFE Cutoff Freq (Hz) [60, 80, 100, 120]

sets the cutoff frequency for the generated LFE signal.

LFE Gain (dB) [-20.0 … 20.0]

You can set the LFE level here

LFE Effect Gate [-20.0 … 0.0]
Threshold (dB) sets the relative threshold of the Effect Gate processor.

Important Note! If you encode the surround signals from this upmix to a Dolby format we recommend

to set the center and the surround downmix level to -3dB for best downmix compatibility.

Metering If you click on the Metering icon on the left hand side in the

status window, a Java applet opens up. This feature is only
available if a valid Java plug-in is available for the browser that is
used to display the GUI.

digital audio
modular
processing system

C8000

16 channel DSP

C8092

page 23/24

GPIO

The C8092 has four dedicated sets the DSP, the SDI, the Failover/Upmix GPI/Os. Moreover it offers
the function to clear the DSP history (see level magic expert parameters) by control of an external
device.

GPIs are useful if you want to recall settings remotely (e.g. via presets).

The C8k frame can handle 127 different virtual GPI numbers.

You must assign a unique number to the respective function. Such

numbers will be generated by the brc8x Broadcast Remote Controller or
by a GPI/O interface module C8817. If the C8092 receives such a
number over the internal CAN bus, it will for example load the respective
preset or it will turn on a bypass function or clear the processing (DSP)
history.

digital audio
modular
processing system

C8000

16 channel DSP

C8092

page 24/24

GPOs (Tallies) may signal the status of a module for a GPI devices like legacy equipment

monitoring systems.
The c8k frame can handle 127 different virtual GPO numbers.
If an event occurs, the C8092 puts the assigned number on the CAN bus

so a C8817 GPI/O module can engage a relay or the brc8x may activate

its tallies.

Important Note! Virtual GPI and GPO numbers do not "see" each other on the CAN bus. I.e. you can't
use a GPO number to trigger an event inside the frame directly. If this is the task you must use the C8817
GPI/O module that can do the GPI/O conversion and provides you with the possibility to set up logical
combinations of physical and virtual GPI/Os.