Kramer VS-3232V User manual

Kramer Electronics, Ltd.
USER MANUAL



Model:
VS-3232V
32x32 Video Matrix Switcher

Contents
i
Contents
1 Introduction 1
2 Getting Started 1
2.1 Quick Start 1
3 Overview 3
4 Your Video Matrix Switcher 4
5 Installing the VS-3232V on a Rack 9
6 Connecting the Video Matrix Switcher 10
6.1 Connecting the VS-3232V as a Composite Video Switcher 10
6.2 Assembling a Multi-channel Video Switcher 12
6.2.1 Configuring a 32x32 Y/C Switcher (Two Units) 13
6.2.2 Configuring a 32x32 YUV/RGB Switcher (Three Units) 14
6.2.3 Configuring a 32x32 RGBS Switcher (Four Units) 15
6.3 Dipswitch Settings 15
6.3.1 Setting the MACHINE # 16
6.3.2 Understanding the System Mode 16
6.3.3 Understanding the Slave Mode 17
6.3.4 The System Mode versus the Master/Slave Mode 18
6.4 Connecting a Control Interface 18
6.4.1 Connecting the RS-232 Control Interface 19
6.4.2 Connecting the RS-485 Control Interface 21
6.5 Configuring the Sync 24
6.6 Controlling via the ETHERNET 25
6.6.1 Connecting the ETHERNET Port directly to a PC (Crossover Cable) 25
6.6.2 Connectingthe ETHERNET Port via a Network Hub (Straight-Through Cable) 26
6.6.3 Control Configuration via the Ethernet Port 26
7 Operating Your Video Matrix Switcher 27
7.1 Startup Display 27
7.1.1 Viewing the Display 28
7.2 Using the Selector Buttons 28
7.3 Confirming Actions 28
7.3.1 Toggling between the At Once and Confirm Modes 29
7.3.2 Confirming a Switching Action 29
7.4 Switching Options 29
7.4.1 Switching one Input to one Output 30
7.4.2 Switching several Inputs to several Outputs 30
7.4.3 Switching one Input to all Outputs 31
7.4.4 Clearing an Output 31
7.4.5 Clearing several Outputs 31
7.4.6 Clearing all Outputs 31
7.5 Storing and Recalling Setups 32
7.5.1 Storing Setups 32

KRAMER: SIMPLE CREATIVE TECHNOLOGY
Contents
ii
7.5.2
Recalling Setups 32
7.6 Using the DEFAULT SETUP Button (Unity Setting) 33
7.7 Choosing the FOLLOW or the BREAKAWAY Modes 34
7.8 Using the LOCK Button 35
8 The MENU Commands 36
8.1 Selecting the SYNC Configuration 38
8.2 Selecting the INTERFACE Configuration 38
8.3 Selecting the Interface REPLY Configuration 39
8.4 Selecting the PROTOCOL Configuration 39
8.5 Selecting the DEFAULT Setup Configuration 39
8.6 Selecting the store DEFAULT Setup Configuration 39
8.7 The Main Firmware Version 40
8.8 Selecting the TOTAL RESET Option 40
9 Flash Memory Upgrade 41
9.1 Switcher Flash Memory Upgrade 41
9.1.1 Downloading from the Internet 41
9.1.2 Connecting the PC to the RS-232 Port 41
9.1.3 Upgrading Firmware 42
9.2 Ethernet Flash Memory Upgrade 46
9.2.1 Downloading from the Internet 46
9.2.2 Connecting the PC to the RS-232 Port 46
9.2.3 Upgrading Firmware 47
10 Technical Specifications 48
11 Communication Protocols 48
11.1 The Kramer 2000 Communication Protocol 48
11.2 ASCII Protocol: General 53
11.2.1 ASCII Protocol: Description 53
Figures
Figure 1: VS-3232V 32x32 Video Matrix Switcher Front Panel 5
Figure 2: VS-3232V 32x32 Video Matrix Switcher Rear Panel 7
Figure 3: Configuring the VS-3232V for Composite Video 11
Figure 4: Configuring a 32x32 s-Video (YC) Switcher with two VS-3232V Switchers 13
Figure 5: Configuring a 32x32 YUV (RGB) Switcher with three VS-3232V Switchers 14
Figure 6: Dipswitches 15
Figure 7: Connecting a PC to Three VS-3232V Units 19
Figure 8: RS-485 Connector PINOUT 21
Figure 9: Connecting the RS-485 Connectors between two VS-3232V Units 22
Figure 10: RS-485 Control Interface and SYNC Connections for Component Switcher 23
Figure 11: Local Area Connection Properties Window 25
Figure 12: Internet Protocol (TCP/IP) Properties Window 26
Figure 13: Default Startup Status Display Sequence 27
Figure 14: Setting the SYNC Configuration (an example) 37
Figure 15: Splash Screen 42

Contents
iii
Figure 16: Atmel – Flip Window 42
Figure 17: Device Selection Window 43
Figure 18: Device Selection window 43
Figure 19: Loading the Hex 44
Figure 20: RS-232 Window 44
Figure 21: Atmel – Flip Window (Connected) 45
Figure 22: Atmel – Flip Window (Operation Completed) 45
Figure 23: The KFR-Programmer Window 47
Tables
Table 1: Front Panel VS-3232V 32x32 Video Matrix Switcher Features 6
Table 2: Rear Panel VS-3232V 32x32 Video Matrix Switcher Features 8
Table 3: Dipswitch Definitions 15
Table 4: Machine # Dipswitch Settings 16
Table 5: The System Mode versus the Slave Mode 18
Table 6: SYNC Configuration Menu 38
Table 7: INTERFACE Configuration Menu 38
Table 8: Interface REPLY Configuration Menu 39
Table 9: PROTOCOL Configuration Menu 39
Table 10: DEFAULT Setup Configuration Menu 39
Table 11: Total Reset Menu 40
Table 12: Technical Specifications of the VS-3232V Video Matrix Switcher 48
Table 13: Hex Table (IN 1-32 to OUT 1-16) 49
Table 14: Hex Table (IN 1-32 to OUT 17-32) 51

Introduction
1
1 Introduction
Welcome to Kramer Electronics (since 1981): a world of unique, creative and
affordable solutions to the infinite range of problems that confront the video, audio
and presentation professional on a daily basis. In recent years, we have redesigned
and upgraded most of our line, making the best even better! Our 500-plus different
models now appear in 8 Groups
1
, which are clearly defined by function.
Congratulations on purchasing your Kramer VS-3232V 32x32 Video Matrix
Switcher. This product is ideal for the following typical applications:
Professional display systems requiring video signal routing
Broadcast, presentation and production facilities, as well as monitoring in
large duplication systems
Rental/staging applications
The package includes the following items:
VS-3232V 32x32 Video Matrix Switcher
Power cord and null-modem adapter
Windows®-based Kramer control software
2
Windows®-based Ethernet Configuration Manager and Virtual Serial Port
Manager
Infra-red remote control transmitter (including the required batteries and a
separate user manual
3
) and this user manual
3
2 Getting Started
We recommend that you:
Unpack the equipment carefully and save the original box and packaging
materials for possible future shipment
Review the contents of this user manual
Use Kramer high performance high resolution cables
4
2.1 Quick Start
This quick start chart summarizes the basic setup and operation steps.
1 GROUP 1: Distribution Amplifiers; GROUP 2: Video and Audio Switchers, Matrix Switchers and Controllers; GROUP 3:
Video, Audio, VGA/XGA Processors; GROUP 4: Interfaces and Sync Processors; GROUP 5: Twisted Pair Interfaces;
GROUP 6: Accessories and Rack Adapters; GROUP 7: Scan Converters and Scalers; and GROUP 8: Cables and Connectors
2 Downloadable from our Web site at http://www.kramerelectronics.com
3 Download up-to-date Kramer user manuals from our Web site: http://www.kramerelectronics.com
4 The complete list of Kramer cables is on our Web site at http://www.kramerelectronics.com

KRAMER: SIMPLE CREATIVE TECHNOLOGY
Getting Started
2

Overview
3
3 Overview
The Kramer VS-3232V is a high performance x32 vertical interval matrix
switcher for composite video signals on BNC connectors. It features a video
bandwidth of over 300MHz that ensures transparent performance even in the
most critical applications. Three SYNC switching options make the
VS-3232V appropriate for a wide range of glitch-free transition applications.
The VS-3232V can be used as a standalone unit, or configured as a part of a
multi-signal Kramer switcher system, in which all units switch
simultaneously.
The VS-3232V features:
Full 32x32 non-blocking matrix array to switch any of the 32 input video
signals to any or all outputs
A video bandwidth of over 300MHz at 3dB along with 0.1dB flatness to
50MHz
Four switching options, one for immediate switching and three for SYNC
switching
59 preset memory locations for quick access to user-defined special
configurations
Fast access to a preprogrammed default preset configuration (UNITY setting)
Two communication protocols – the Kramer 2000 and the limited Sierra
ASCII
Easy upgrading of the firmware via the Ethernet
An 80x2 symbol LCD panel with user-friendly information and a
configuration menu
Optional connection to several switchers in one multi-signal video-audio
control system
A LOCK button/remote function to prevent tampering with the front panel
Control the VS-3232V via the front panel buttons, or:
Remotely, by RS-232 or RS-485 serial commands transmitted by a touch
screen system, PC, or other serial controller
Via the ETHERNET
Via the infra-red remote control transmitter
Via an external remote IR Receiver (optional
1
)
The VS-3232V is housed in a 19" 2U rack mountable enclosure.
1 Kramer P/N: 95-0103050

KRAMER: SIMPLE CREATIVE TECHNOLOGY
Your Video Matrix Switcher
4
To achieve the best performance:
Connect only good quality connection cables, thus avoiding interference,
deterioration in signal quality due to poor matching, and elevated noise
levels (often associated with low quality cables)
Avoid interference from neighboring electrical appliances that may
adversely influence signal quality and position your Kramer VS-3232V in
a location free from moisture and away from excessive sunlight and dust
4 Your Video Matrix Switcher
Figure 1 and Figure 2 illustrate the front and rear panels of the VS-3232V,
respectively. Table 1 and Table 2 define the front and rear panels of the
VS-3232V, respectively.

Your Video Matrix Switcher
5
TAKE LOCK MENU
1
4
7
5
8
6
9
0
2 3
1
4
7
5
8
6
9
0
2 3
Figure 1: VS-3232V 32x32 Video Matrix Switcher Front Panel

KRAMER: SIMPLE CREATIVE TECHNOLOGY
Your Video Matrix Switcher
6
Table 1: Front Panel VS-3232V 32x32 Video Matrix Switcher Features
# Feature Function
1 ESC Press to exit the current operation
2 STO
1
Press to store the current setting in the non-volatile memory
3 ALL
1
Press ALL followed by an input number to connect that input to all the
outputs
4 OFF
1
Press OFF followed by an output number to disconnect that output
5 RCL
1
Press to recall a setup from the non-volatile memory
6
Menu Buttons
ENT Press to complete the input-output setup when using a one-digit number
instead of two digits
2
.
Press to enter the options in a setup menu
7 (Forward) Press to shift the content of the display to the left
3
8 (Backward) Press to shift the content of the display to the right
3
9
Double-function Selector Buttons Area
Button
Labels
Digits from
0 to 9 Select the output to which the input is switched and select the input to switch to the output
10 FOLLOW Button Press to enter the Follow mode in the multi-switcher configuration
11 BREAKAWAY Button Press to enter the Stand-Alone mode in the multi-switcher configuration
12 DEFAULT SETUP Button Press to recall the default setup (UNITY setting), see section 8.5
13 INPUTS/OUTPUTS LCD
Display Displays the outputs (in the upper row, below the OUTPUTS label) switched to the selected inputs (in the lower row, above the INPUTS
label).
Displays user interface messages and configuration menu items
14 LOCK Button Toggle
4
to lock/unlock the front panel buttons
15 MENU Button Press once to enable the ALL, OFF STO and RCL buttons
Press twice to enter the configuration menu
When in the configuration menu, press to browse through the menu items
16 TAKE Button Used to confirm and complete setup and switching
17 Power Switch Illuminated switch for turning the unit ON or OFF
18 IR Receiver The red LED is illuminated when receiving signals from the Kramer Infra-
red remote control transmitter
1 This button is enabled and illuminated after pressing the MENU button
2 For example, to enter input 5, you can either press 0, 5 or 5, ENT
3 Since the LCD display is large enough to show only 13 cross-points out of a total of 32
4 Press and hold the LOCK button for about two seconds to toggle

Your Video Matrix Switcher
7
Figure 2: VS-3232V 32x32 Video Matrix Switcher Rear Panel

KRAMER: SIMPLE CREATIVE TECHNOLOGY
Your Video Matrix Switcher
8
Table 2: Rear Panel VS-3232V 32x32 Video Matrix Switcher Features
# Feature Function
1 INPUT BNC Connectors Connect to the video sources (from 1 to 32)
2 OUTPUT BNC Connectors Connect to the video acceptors (from 1 to 32)
3 REMOTE IR 3.5mm Mini Jack
Connect to an external IR receiver unit for controlling the machine via an
IR remote controller (instead of using the front panel IR receiver)
1
4 RS-485 Detachable Terminal
Block Port
The SYNC and the G PINs are for vertical sync and ground
connection respectively, and the B and A PINs are for RS-485
5 FLASH MAIN Button Push in
2
to upgrade the switcher microcontroller to the latest Kramer
firmware (see section 9.1), or release (the factory default) for normal
operation
6 ETHERNET Connector Connects to the PC or other Serial Controller through computer
networking LAN
7 FACTORY RESET Button Press to reset to factory default definitions
3
:
IP Address: 192.168.1.39
Mask: 255.255.255.0
Gateway: 192.168.1.1
8 FLASH – Normal Switch Push in
2
to upgrade the ETH FLASH firmware version (see section
9.2), or release (the factory default) for normal operation
9 IN DB 9F Port Connects to the PC or the Remote Controller
4
10
RS-232
OUT DB 9M Port Connects to the RS-232 IN DB 9F port of the next unit in the daisy-
chain connection
11 Power Connector with Fuse AC connector enabling power supply to the unit
12 SETUP Dipswitches Dipswitches for setup of the unit (see section 6.2.3)
13 TERM 75
 Button Press to terminate the GENLOCK SYNC with 75 or release for
looping
5
14 GENLOCK Double BNC
Connectors For GENLOCK SYNC input/loop
1 Optional. Can be used instead of the front panel (built-in) IR receiver to remotely control the VS-3232V (only if the internal
IR connection cable has been installed)
2 Using a small screwdriver if required
3 Turn the machine OFF using the power switch and then turn it ON while pressing the ETH Factory Reset button. The unit
will power up and load its memory with the factory default definitions
4 If the unit is not the first unit in the line, connects to the RS-232 OUT DB 9F port of the previous unit in the line
5 Push in to terminate the sync line. Push out when the sync line extends to another unit

Installing the VS-3232V on a Rack
9
5 Installing the VS-3232V on a Rack
This section describes what to do before installing on a rack and how to rack
mount.
Before installing on a rack, be sure that the environment is
within the recommended range:
Operating temperature range +5 to +45 Deg. Centigrade
5 to 65% RHL, non-condensing
-20 to +70 Deg. Centigrade
5 to 95% RHL, non-condensing
Operating humidity range
Storage temperature range
Storage humidity range
When installing on a 19" rack, avoid hazards by taking
care that:
It is located within the recommended environmental
conditions, as the operating ambient temperature of a
closed or multi unit rack assembly may exceed the
room ambient temperature.
Attach both ear brackets to the
machine. To do so, remove the
screws from each side of the machine
(5 on each side), and replace those
screws through the ear brackets.
Place the ears of the machine
against the rack rails, and insert the
proper screws (not provided) through
each of the four holes in the rack
ears.
Note that:
Detachable rack ears can be removed
for desktop use
Always mount the machine in the rack
before you attach any cables or
connect the machine to the power
If you are using a Kramer rack adapter
kit (for a machine that is not 19"), see
the Rack Adapters user manual for
installation instructions (you can
download it at:
http://www.kramerelectronics.com)




In some models, the front panel
may feature built-in rack ears
Once rack mounted, enough air will still flow around the
machine.
The machine is placed straight in the correct horizontal
position.
You do not overload the circuit(s). When connecting
the machine to the supply circuit, overloading the
circuits might have a detrimental effect on overcurrent
protection and supply wiring. Refer to the appropriate
nameplate ratings for information. For example, for
fuse replacement, see the value printed on the product
label.

CAUTION!!
Before Installing on a Rack
How to Rack Mount
To rack-mount a machine:
1
1
2
2
3
4
5The machine is earthed (grounded) in a reliable way
and is connected only to an electricity socket with
grounding. Pay particular attention
and that you use only the power cord that is
supplied with the machine.
to situations where
electricity is supplied indirectly (when the power cord is
not plugged directly into the socket in the wall), for
example, when using an extension cable or a power
strip,

KRAMER: SIMPLE CREATIVE TECHNOLOGY
Connecting the Video Matrix Switcher
10
6 Connecting the Video Matrix Switcher
You can install the VS-3232V as:
A composite video standalone switcher (see section 6.1)
An s-Video switcher, by combining two VS-3232V switchers: one unit for
the Y signal and the second unit for the C signal (see section 6.2.1)
A component video (YUV/RGB) switcher, by combining three VS-3232V
units: one for the Y signal, the second for the U signal and the third for the
V signal (see section 6.2.2)
An RGBS switcher, by combining four VS-3232V units: one for the R
signal, the second for the G signal, the third for the B signal and the fourth
for the SYNC (see section 6.2.3)
6.1 Connecting the VS-3232V as a Composite Video Switcher
To install the VS-3232V as illustrated in the example in Figure 3, do the
following
1
:
1. Connect up to 32 composite video sources (for example
2
, two composite
video players).
2. Connect up to 32 composite video acceptors (for example
2
, two displays).
3. Set the dipswitches (see section 6.2.3).
4. If required, connect a PC and/or controller to the RS-232 port (see
section 6.4.1) and/or the RS-485 port (see section 6.4.2) and/or the
ETHERNET port (see section 6.6).
5. Connect the power cord
3
.
6. If necessary, review and set the system variables, using the MENU function,
and the default setup (UNITY setting) as section 8 describes.
1 Switch OFF the power on each device before connecting it to your VS-3232V
2 In this example only two inputs and two outputs are connected
3 We recommend that you use only the power cord that is supplied with this machine

Connecting the Video Matrix Switcher
11
Figure 3: Configuring the VS-3232V for Composite Video

KRAMER: SIMPLE CREATIVE TECHNOLOGY
Connecting the Video Matrix Switcher
12
6.2 Assembling a Multi-channel Video Switcher
You can configure several VS-3232V units as 32x32 multi-channel video
switchers for:
s-Video (Y/C) by combining two VS-3232V units (see section 6.2.1)
YUV (RGB) by combining three VS-3232V units (see section 6.2.2)
RGBS by combining four VS-3232V units (see section 6.2.3)
In a multi-channel video switcher configuration, only one unit can be the
Master (with DIP 6 OFF). The other units must be Slaves (with DIP 6 ON).
The front panel of each Slave unit is always locked and its LCD display does
not illuminate, although it displays the current cross-point status of those
switchers. The Slave units always follow the Master. The Master unit operates
in the regular way
1
, leading the Slaves in the background.
To activate a multi-channel video switcher so that each unit is in the same
state from the outset, first turn ON the master unit and only after it completes
the initial setup, turn ON the slave units one by one.
1 The front panel is not locked and the LCD display illuminates

Connecting the Video Matrix Switcher
13
6.2.1 Configuring a 32x32 Y/C Switcher (Two Units)
You can configure a 32x32 video matrix switcher for s-Video (Y/C), by
combining two VS-3232V switchers. Note that the machine number on both
units must be identical.
Although in the example in Figure 4 only one input
1
and one output
2
are
connected, you can connect all the inputs and outputs in the same way to
create a 32x32 Y/C switcher.
Connect the communication line between the two switchers via the RS-232 or
RS-485 control interface as section 6.4 describes.
s-Video Player
s-Video Display
Y Channel Switcher - Master ( )
Set DIP 6 to OFF
C Channel Switcher - Slave ( ) set DIP 6 to ON
Y
Y
C
C
Figure 4: Configuring a 32x32 s-Video (YC) Switcher with two VS-3232V Switchers
1 The INPUT 1 connectors on the Y switcher and the C switcher
2 The OUTPUT 32 connectors on the Y switcher and the C switcher

KRAMER: SIMPLE CREATIVE TECHNOLOGY
Connecting the Video Matrix Switcher
14
6.2.2 Configuring a 32x32 YUV/RGB Switcher (Three Units)
Configure a 32x32 video matrix switcher for YUV/RGB by combining
1
three
VS-3232V switchers. Note that the machine number on all three units must be
identical.
Although in the example in Figure 5 only one input
2
and one output
3
are
connected, you can connect all the inputs and outputs in the same way to
create a 32x32 YUV/RGB switcher.
Connect the communication line via the RS-232 or RS-485 control interface as
section 6.4 describes.
Component
Video Player
YUV/RGB Display
Y/G Channel Switcher - Master
( )
Set DIP 6 to OFF
V/R Channel Switcher - Slave ( ) Set DIP 6 to ON
U/B Channel Switcher - Slave
( ) Set DIP 6 to ON
V/R
V/R U/B
U/B Y/G
Y/G
Figure 5: Configuring a 32x32 YUV (RGB) Switcher with three VS-3232V Switchers
1 For a description of how to connect the RS-485 connectors between the VS-3232V switchers, refer to section 6.4.2
2 The INPUT 1 connectors on the Y switcher, the U switcher and the V switcher
3 The OUTPUT 32 connectors on the Y switcher, the U switcher and the V switcher

Connecting the Video Matrix Switcher
15
6.2.3 Configuring a 32x32 RGBS Switcher (Four Units)
Configure four VS-3232V switchers as a 32x32 video matrix switcher for
RGBS
1
, in a similar way to how Figure 5 in section 6.2.2 illustrates combining
three VS-3232V switchers for YUV (RGB).
6.3 Dipswitch Settings
Configure the VS-3232V by setting the eight dipswitches as Figure 6 and
Table 3 define:


 







RS-232 NULL-MODEM
MACHINE #
SYSTEM MODE SLAVE MODE
RS-485
TERMINATION
Figure 6: Dipswitches
Table 3: Dipswitch Definitions
Dipswitch # Function:
1-4 Set the MACHINE # (see Table 4 in section 6.3.1)
5 Enables (ON) or disables (OFF) the FOLLOW SYSTEM MODE in a multi-switcher
configuration
6 Enables (ON) or disables (OFF) the SLAVE mode in a multi-channel configuration
7 Disables the use of a null modem adapter
2
with RS-232 as follows:
Set OFF for RS-232 input connection via a null modem adapter
Set ON for RS-232 input connection without a null modem adapter
8 Set ON for RS-485 termination for the first and the last machine (RS-485 line
terminates with 110); for others set OFF (RS-485 line is open)
1 The S signal must be composite video SYNC (analog), not TTL
2 See section 6.4.1

KRAMER: SIMPLE CREATIVE TECHNOLOGY
Connecting the Video Matrix Switcher
16
6.3.1 Setting the MACHINE #
To control a unit remotely via RS-232, RS-485, IR or the Ethernet, each unit
has to be identified via its unique Machine #. Set the Machine #
1
on a
VS-3232V unit according to Table 4.
Table 4: Machine # Dipswitch Settings
Mach. # DIP 1 DIP 2 DIP 3 DIP 4 Mach. # DIP 1 DIP 2 DIP 3 DIP 4
1 ON OFF OFF OFF 9 ON OFF OFF ON
2 OFF ON OFF OFF 10 OFF ON OFF ON
3 ON ON OFF OFF 11 ON ON OFF ON
4 OFF OFF ON OFF 12 OFF OFF ON ON
5 ON OFF ON OFF 13 ON OFF ON ON
6 OFF ON ON OFF 14 OFF ON ON ON
7 ON ON ON OFF 15 ON ON ON ON
8 OFF OFF OFF ON
6.3.2 Understanding the System Mode
Though the terms audio-follow-video
2
and audio breakaway
3
are well known,
there may be signals other than audio signals that need to be switched
simultaneously and at other times, need to be switched independently.
For example:
Non-linear editing systems that combine video with analog audio or with
digital audio
Duplication systems, that produce Master tapes from programs with
different formats such as composite analog, component analog and
component digital
The term FOLLOW-SYSTEM
4
indicates the most common case where
any type of signal can follow one or more other signals.
DIP 5 defines whether the VS-3232V unit can communicate with other
switchers via a common control line.
You can set DIP 5 OFF to disable the FOLLOW-SYSTEM mode when
setting a standalone switcher
5
application, including standalone multi-
channel video switcher applications
6
.
1 When using a single unit, set the unit to MACHINE # 1
2 Video and the audio channels switch simultaneously in the same way
3 Audio channels switch independently from the video channels
4 Instead of Audio-Follow-Video
5 See section 6.1
6 See section 6.2