Kramer VP-128H, RC-1616 User Manual
Kramer Electronics, Ltd.
USER MANUAL
Models:
VP-128H,
Matrix Switcher
RC-1616,
Remote Control
Contents
i
Contents
1
Introduction 1
2
Getting Started 1
3
Overview 2
3.1
About the VP-128H 2
3.2
About the RC-1616 3
3.3
Achieving the Best Performance 3
4
Your VP-128H Matrix Switcher 3
4.1
The VP-128H with the Front Panel and the Rear Panel Intact 3
4.2
The VP-128H Without the Front Panel (but with the Rear Panel) 5
4.3
The VP-128H Local Control Panel (Detached Front Panel) 6
5
Connecting a VP-128H Matrix Switcher 7
5.1
Connecting the VP-128H Matrix Switcher 7
5.2
Controlling via RS-232 (for example, using a PC) 8
5.3
Connecting the VP-128H (also RC-1616) via the ETHERNET port 9
6
Your RC-1616 Remote Control 11
6.1
The RC-1616 with the Front Panel and the Rear Panel Intact 11
6.2
The RC-1616 Front Panel Detached 12
6.2.1 Setting the Dipswitches 13
7
Connecting a RC-1616 Remote Control 14
8
Operating the VP-128H Matrix Switcher 15
8.1
Choosing the Audio-Follow-Video or Breakaway Option 15
8.1.1 Setting the Audio-Follow-Video Option 15
8.1.2 Setting the Breakaway Option 15
8.2
Switching OUT-IN Combinations 16
8.2.1 Operating in the AT ONCE Mode 16
9
Technical Specifications 17
10
Communication Protocols 18
10.1 Kramer 2000 Protocol Supported Subset 18
10.1.1 Use of Kramer Machines 20
10.1.2 Command Details 20
10.2 Sierra Video Systems (SVS) RS-232 Compatible Protocol 29
10.2.1 Command Details I 29
10.2.2 Command Details II 30
10.3 Generic Protocol Supported Subset 40
10.3.1 Use of Generic Machines 40
10.3.2 Command Details 40
10.4 Kramer Ethernet Protocol Document 45
10.4.1 Protocol Overview 45
10.4.2 Packet Structure 45
KRAMER: SIMPLE CREATIVE TECHNOLOGY
Contents
ii
10.4.3
Frame Initiated Messages 45
10.4.4 Crosspoint Status Message 45
10.4.5 Keep Alive Message 45
10.4.6 Remote Client Initiated Messages 45
10.4.7 Lock Change 46
10.4.8 Crosspoint Change 46
10.4.9 Volume Increment / Decrement 46
10.4.10 Request Crosspoint Status 46
Figures
Figure 1: VP-128H Matrix Switcher 4
Figure 2: VP-128H Without the Front Panel 6
Figure 3: VP-128H Local Control Panel 6
Figure 4: VP-128H Front View with Front Panel Detached 6
Figure 5: Connecting a PC without using a Null-modem Adapter 8
Figure 6: RJ-45 PINOUT 9
Figure 7: Connecting a VP-128H Matrix Switcher 10
Figure 8: RC-1616 Remote Control 11
Figure 9: RC-1616 Remote Control with its Front Panel Detached 12
Figure 10: Connecting up to 512 RC-1616 Remote Control Units to a VP-128H 14
Tables
Table 1: VP-128H Matrix Switcher Front Panel Features 5
Table 2: VP-128H Matrix Switcher Rear Panel Features 5
Table 3: VP-128H Front View with Front Panel Detached Features 6
Table 4: Crossover Cable RJ-45 PINOUT 9
Table 5: Straight-through Cable RJ-45 PINOUT 9
Table 6: RC-1616 Remote Control Front Panel Features 11
Table 7: RC-1616 Remote Control Rear Panel Features 12
Table 8: RC-1616 Front View with Front Panel Detached Features 12
Table 9: Dipswitch Definitions S2-1 to S2-8 13
Table 10: Dipswitch Settings (Levels controlled by the Panel) 13
Table 11: Technical Specifications of the VP-128H 17
Table 12: RS-232 Commands for Selecting Different Protocols 18
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
350-plus different models now appear in 8 Groups1, which are clearly defined
by function. Congratulations on purchasing your Kramer VP-128H Matrix
Switcher and/or RC-1616 Remote Control. The VP-128H Matrix Switcher is
ideal for the following typical applications:
Switching between up to 12 VGA computer inputs and up to eight VGA
display outputs, in which the use of native HD15 connectors for the inputs and
outputs eliminates the need for awkward HD15-to-BNC breakout cables. The
entire VP-128H is only 1RU high compared to 3RU that would be required if
the unit were built with BNC connectors on its rear panel
Any professional system requiring outstanding value in a 12x8 matrix
The RC-1616 Remote Control is ideal for sophisticated control from various
locations via the Ethernet. You can connect up to 512 RC-1616 Remote
Control panels to one router: 256 XY panels and 256 single bus panels.
The package includes the following items:
VP-128H Matrix Switcher with a power cord and a Null-modem adapter;
and/or RC-1616 Remote Control with a power adapter
Windows®-based Kramer control software and this user manual2
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 cables3
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 Download up-to-date Kramer user manuals from the Internet at this URL: http://www.kramerelectronics.com
3 The complete list of Kramer cables is on our Web site at http://www.kramerelectronics.com
KRAMER: SIMPLE CREATIVE TECHNOLOGY
Overview
2
3 Overview
This section summarizes the:
VP-128H Matrix Switcher, see section 3.1
RC-1616 Remote Control, see section 3.2
3.1 About the VP-128H
The VP-128H is a true 12x8 matrix switcher for VGA / XGA signals that lets
you simultaneously route any or all of the 12 inputs to any or all of the 8
outputs. The high performance VP-128H is rugged, easy to service1, and fits
into one vertical space (1U) of a standard 19" rack. In particular, the VP-
128H includes:
A very reliable modular design2 (without any internal adjustments3), with
a detachable4 front panel that is fastened into the frame with two front panel
hand operated slide action latches. The detached front panel can be used as a
local control panel, by attaching it to the main electronics module within the
VP-128H using a 9-wire ribbon flat cable
12 input and eight output selector buttons
Video bandwidth of 315MHz that ensures transparent VGA / XGA
performance
DC coupled inputs and outputs
Storing and recalling setup options
The ability to store 10 setups in the control system in Flash
A RGB delayed switching mode (with a user selectable delay increment
of 500ms for each output ranging from 0 to 3.5 seconds) for any output
through black for clean transitions when switching between non genlocked
sources
A linear circuit path for the H and V channels, to cope with any
non-standard H and V sync levels
1 You can easily remove the front panel to access all the components from the front, without having to remove it from its rack
2 That has many advantages over competing systems that are not modular (for example, the Mean Time To Repair (MTTR)
using replacement modules would only take a few seconds, as opposed to hours for a non-modular design). All modules are
secured with positive latches (slide latches or positive leverage long-handle ejector/inserter devices with built-in latching
clasps). All plug-in modules are supported on all four sides. The rear panel is recessed 0.7 inches to protect the rear panel
connectors from damage
3 Video gain is set by 0.1% resistors
4 Removing the front panel reveals the two major slide in components—the main switching module and the plug-in power
supply unit—secured by latchesto prevent accidental disconnection in mobile installations
Your VP-128H Matrix Switcher
3
A passive two BNC sync loop - useful to ensure deterministic switching1
Two VP-128H units can be cascaded
Control the VP-128H via the front panel buttons, or remotely:
By 10 Base T Ethernet2 or RS-232 serial commands transmitted by a
touch screen system, PC, or other serial controller
3.2 About the RC-1616
The RC-1616 Remote Control is ideal for sophisticated control from various
locations via the Ethernet. You can connect up to 512 RC-1616 Remote
Control panels to one router: 256 XY panels and 256 single bus panels.
3.3 Achieving the Best Performance
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 and position
the VP-128H / RC-1616 away from moisture, excessive sunlight and dust
4 Your VP-128H Matrix Switcher
The VP-128H Matrix Switcher can be used:
With the front panel and rear panel intact, see section 4.1
Without the front panel (the front panel is blocked off), but with the rear
panel intact, see section 4.2
With the VP-128H front panel detached, which functions as a local
control panel, see section 4.3
4.1 The VP-128H with the Front Panel and the Rear Panel Intact
Figure 1 and Table 1 and Table 2 define the front3 and rear panels of the
VP-128H Matrix Switcher:
1 Connect video with sync to either BNC. If desired, use the second BNC to loop the signal to another device
2 Ethernet control will allow more powerful panels to store in the panel setup and recall schemes that are tailored to the
configuration of the panels controls. An entire router configuration can be sent to the router from the panel in under one
millisecond
3 The same switch assemblies and metalwork that make up the front panel are used on the remote control panel. You can
connect up to 512 remote control panels to one router: 256 XY panels and 256 single bus panels
Your VP-128H Matrix Switcher
4
KRAMER: SIMPLE CREATIVE TECHNOLOGY
Figure 1: VP-128H Matrix Switcher
Your VP-128H Matrix Switcher
5
Table 1: VP-128H Matrix Switcher Front Panel Features
# Feature Function
1 Slide Action Latches Fasten the front panel into the frame
2 OUT Selector Buttons1 Select the output2 to which the input is switched (from 1 to 8)
3 IN Selector Buttons3 Select the input to switch to the output (from 1 to 12)
Table 2: VP-128H Matrix Switcher Rear Panel Features
# Feature Function
1 RS-232 DB 9F Connector Connects to the PC or other Serial Controller
2 Slow Blow Fuse 20x5mm 0.5A slow blow fuse
3 Power Connector4 AC connector enabling power supply to the unit
4 Ethernet 10 Base T Port Connects to the LAN
5 REF SYNC BNC Connector When connected unit switches in vertical interval5
6 REF SYNC BNC Connector When connected unit switches in vertical interval5
7 VGA/XGA Video INPUTS Connects to the VGA/XGA video inputs (1 to 12)
8 VGA/XGA Video OUTPUTS Connects to the VGA/XGA video outputs (1 to 8)
4.2 The VP-128H Without the Front Panel (but with the Rear Panel)
You can purchase, configure and operate the VP-128H without a front
panel6—as Figure 2 illustrates—when operating the VP-128H via a remote
panel, RS-232 control, or 10 Base T Ethernet control.
1 These buttons operate in the ‘one out of n’ mode. When one of these buttons is pressed the previous button is cleared and
the new selection is latched and tallied. If the selected output is ‘locked’ the lamp in the output button flashes and the correct
input status is tallied via the input select buttons
2 Each output can be muted independently; and can be set to a delayed switch through black, with a user selectable delay
increment for each output
3 These buttons operate in the ‘one out of n’ mode. When one of these buttons is pressed the previous button is cleared and
the new selection is latched and tallied. When an output is selected the current state of the corresponding input is tallied in the
appropriate button. If the source is a breakaway, a flashing lamp indicates the audio selection. If the output being controlled is
locked, pressing the input select button has no affect
4 If the power supply needs to be replaced, you can access it from the front after removing the front panel (see section 4.3).
There is no harm leaving the power turned ON continuously, or in using the AC cord as the ON/OFF switch
5 With an HD15-to-BNC breakout, these two SYNC BNC connectors can be connected in a looping manner to a VP-128H
input or output. Inside the VP-128H, the BNC connectors connect to a sync separator circuit, which separates vertical sync
from composite video, composite sync, positive V pulse or negative V pulse. If left unconnected, the VP-128H operation is
not adversely affected. If two or more of the VP-128H inputs are already synchronized to each other, connect the BNC
connectors. By using the same reference to the cameras and to the VP-128H, a much cleaner switch will occur because it will
happen in the vertical interval
6 That is, the front panel (or local control panel) is blocked off with a blank cover
KRAMER: SIMPLE CREATIVE TECHNOLOGY
Your VP-128H Matrix Switcher
6
Figure 2: VP-128H Without the Front Panel
4.3 The VP-128H Local Control Panel (Detached Front Panel)
Figure 3 illustrates the front view of the VP-128H local control panel1:
Figure 3: VP-128H Local Control Panel1
The local control panel1 connects via a flat cable to the main switching
module inside the VP-128H. Figure 4 and Table 3 define the front view of the
VP-128H after its local control panel1 is detached:
Figure 4: VP-128H Front View with Front Panel Detached
Table 3: VP-128H Front View with Front Panel Detached Features
# Feature Function
1 Release Latches Fasten the main switching module into the frame
2 9-wire Ribbon Flat Cable with
DB9M connectors
Connects the circuitry on the (detached) front panel to the main
electronics module
3 Main Switching Module Provides easy accessibility for service and repair
4 Plug-in Power Supply Unit Detachable power module with a power switch and slide action latch on
the front side, and 6-pins on the rear side that transmit power to the power
connector (see item 3 in Table 2)
4a Power Switch Illuminated switch for turning the unit ON or OFF
4b Slide Action Latch Fastens the plug-in power supply unit into the frame
1 The front panel when it is detached
Connecting a VP-128H Matrix Switcher
7
5 Connecting a VP-128H Matrix Switcher
You can control the VP-128H via:
Its front (local) panel, see section 5.1
RS-232. For example, by connecting a PC via the null-modem adapter
(when using the Kramer Control software or other controller) if control via
RS-232 is required (see section 5.2)
ETHERNET (see section 5.3)
The RC-1616 Remote Control (see section 6)
5.1 Connecting the VP-128H Matrix Switcher
This section describes how to connect the VP-128H.
To connect your VP-128H Matrix Switcher1, connect the following2:
1. Connect up to 12 VGA/UXGA sources to the 12 HD15F input
connectors. For example1, connect a computer graphics source to the
INPUT 1 HD15F connector, and a laptop graphics source to the INPUT
12 HD15F connector.
2. Connect up to 8 HD15F output connectors to up to3 8 VGA/UXGA
acceptors. For example1, connect the OUTPUT 1 HD15F connector to the
VGA/UXGA acceptor 1, for example, a projector, and connect the
OUTPUT 8 HD15F connector to the VGA/UXGA acceptor 8, for
example, a display.
3. Connect the Sync reference BNC connectors (optional).
4. Connect a PC (if required) to the RS-232 port, see section 5.2.
5. Connect the ETHERNET port (if required), see section 5.3.
6. Connect the power cord4.
1 As the example in Figure 7 illustrates
2 Switch OFF the power on each device before connecting it to your VP-128H. After connecting your VP-128H, switch on its
power and then switch on the power on each device
3 When less than 8 outputs are required, connect only those outputs of the VP-128H and leave the other outputs unconnected
4 We recommend that you use only the power cord that is supplied with this machine
KRAMER: SIMPLE CREATIVE TECHNOLOGY
Connecting a VP-128H Matrix Switcher
8
5.2 Controlling via RS-232 (for example, using a PC)
You can connect a PC to the RS-232 port of the VP-128H unit, with or1
without using a Null-modem adapter (provided with the machine):
To connect a PC to the VP-128H unit, using the Null-modem adapter
provided with the machine:
Connect the RS-232 DB9 rear panel port on the VP-128H unit to the
Null-modem adapter and connect the Null-modem adapter with a 9 wire flat
cable to the RS-232 DB9 port on your PC
To connect a PC to the VP-128H unit without using a Null-modem adapter:
Connect the RS-232 DB9 port on your PC to the RS-232 DB9 rear panel
port on the VP-128H unit, as Figure 5 illustrates (depending on whether the
PC has a 9-pin or 25-pin connector)
Figure 5: Connecting a PC without using a Null-modem Adapter
1 The construction of the RS-232 I/O includes internal jumpers that allow the VP-128H to require an external null modem or
use a generic pin-to-pin 9 pin cable to a PC with no Null-modem adapter
Connecting a VP-128H Matrix Switcher
9
5.3 Connecting the VP-128H (also RC-1616) via the ETHERNET port
To connect the VP-128H (also the RC-1616) via the 10 Base T ETHERNET
port, do the following:
Connect the VP-128H 10 Base T port to the LAN port of your PC, or the
VP-128H 10 Base T port to the RC-1616 10 Base T port, when not using a hub,
via a crossover cable with RJ-45 connectors, as Table 4 and Figure 6 define
Table 4: Crossover Cable RJ-45 PINOUT
EIA /TIA 568A
Side 2
EIA /TIA 568B
Side 1
PIN Wire Color PIN Wire Color
1 Green / White 1 Orange / White
2 Green 2 Orange
3 Orange / White 3 Green / White
4 Blue 4 Blue
5 Blue / White 5 Blue / White
6 Orange 6 Green
7 Brown / White 7 Brown / White
8 Brown 8 Brown
Pair 1 4 and 5 Pair 1 4 and 5
Pair 2 3 and 6 Pair 2 1 and 2
Pair 3 1 and 2 Pair 3 3 and 6
Pair 4 7 and 8
Pair 4 7 and 8
Figure 6: RJ-45 PINOUT
If connecting the VP-128H / RC-1616 10 Base T port to the LAN port on
a network hub (for example, to connect multiple RC-1616 panels to one
VP-128H, and/or for a long distance connection) or network router, use a
straight-through cable with RJ-45 connectors, as Table 5 defines
Table 5: Straight-through Cable RJ-45 PINOUT
EIA /TIA 568A
Side 2
EIA /TIA 568B
Side 1
PIN Wire Color PIN Wire Color
1 Orange / White 1 Orange / White
2 Orange 2 Orange
3 Green / White 3 Green / White
4 Blue 4 Blue
5 Blue / White 5 Blue / White
6 Green 6 Green
7 Brown / White 7 Brown / White
8 Brown
8 Brown
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Connecting a VP-128H Matrix Switcher
10
Figure 7 illustrates how to connect the VP-128H (without a remote control
panel):
Figure 7: Connecting a VP-128H Matrix Switcher
Your RC-1616 Remote Control
11
6 Your RC-1616 Remote Control
The RC-1616 Remote Control1 can be used:
With the front panel and rear panel intact, see section 6.1
With the RC-1616 front panel detached, see section 6.2
6.1 The RC-1616 with the Front Panel and the Rear Panel Intact
Figure 8, Table 6 and Table 7 define the front and rear panels of the RC-1616:
Figure 8: RC-1616 Remote Control
Table 6: RC-1616 Remote Control Front Panel Features
# Feature Function
1 Slide Action Latches Fasten the front panel into the frame
2 VIDEO2 Button Affects video (audio does not switch)
3 AUDIO2 Button Affects audio (video does not switch)
4 VOLUME Up3 Button Pressing together with an IN / OUT Selector button decreases the level
5 VOLUME Down3 Button Pressing together with an IN / OUT Selector button increases the level
6 IN Buttons Select the VGA/XGA input to switch to the VGA/XGA output (from 1 to 16)
7 OUT Buttons Select the VGA/XGA output1 to which the VGA/XGA input is switched
(from 1 to 16)
1 It is fully enclosed on all sides, 2 inches deep, and includes a small processor board that performs the button functions and
provides the Ethernet interface
2 When the panel is powered ON, this button is OFF. Pressing this button will cause that button to latch ON. Pressing the
same button again will turn off this button. If either button is in the ON mode, pressing the other button will turn OFF the first
button (both buttons on, is an invalid condition). If both buttons are pressed at the same time, both buttons turn OFF (“AFV”)
and then re-selecting the desired button is required to turn ON that mode. When the video and audio sources are different, the
audio input lamp flashes on and off to indicate “breakaway”
3 The VOL UP button takes precedence over the VOL DOWN button if both are pressed. The VOL UP and VOL DOWN
buttons illuminate when pressed, but do not cause the Input Selector or Output Selector buttons to illuminate
KRAMER: SIMPLE CREATIVE TECHNOLOGY
Your RC-1616 Remote Control
12
Table 7: RC-1616 Remote Control Rear Panel Features
# Feature Function
1 9V DC 1A Connector +9V DC connector for powering the unit2
2 Ethernet 10 Base T Port Connects to the LAN (used for remote panels and other types of Ethernet control)
6.2 The RC-1616 Front Panel Detached
The detached RC-1616 front panel connects via a flat cable to the main
switching module inside the RC-1616.
Figure 9 and Table 8 define the RC-1616 with its front panel detached3:
Figure 9: RC-1616 Remote Control with its Front Panel Detached
Table 8: RC-1616 Front View with Front Panel Detached Features
# Feature Function
1 9-wire Ribbon Flat Cable
with DB9M connectors
Connects the circuitry on the (detached) front panel to the main
electronics module
2 Dipswitches (first set 1 to 8 is
named: S1-1 to S1-8)
4
Set the panel’s network address5 (by default, set to OFF)
3 Dipswitches (second set 1 to
8 is named: S2-1 to S2-8)4
Determine the single bus or the “XY” operation, as well as the video and
audio control levels (see section 6.2.1)
1 Each output can be muted independently; and can be set to a delayed switch through black, with a user selectable delay
increment for each output
2 Connect to an external ‘desk-top’ universal AC input power supply
3 Slide-in units held in place by latches to prevent accidental disconnection in mobile installations
4 You can access the dipswitches without removing the unit from its rack, as they are located inside the panel. You can access
them by unfastening the front panel via the slide action latches (item 1 in Figure 8)
5 These dipswitches have a dual purpose. There are two groups of 256 network addresses (512 in total). When the panel type
is ‘XY’ S1 to S8, select network addresses 1 to 256. When the panel type is ‘Single bus’ (determined by the setting of S2-1 –
refer to section 6.2.1), S1 through S5 serve a dual purpose. S1 through S5 select the OUTPUT bus controlled by that panel
and S1 through S5 select the 5 LSBs of network address 257 through 512. When the scan determines that the panel is a single
bus type panel, S1-6, S1-7 and S1-8 are the three MSB’s of the panel’s network address. This scheme puts a limit of 8 single
bus panels that can be set to the same output
Your RC-1616 Remote Control
13
# Feature Function
4 Main Switching Module Provides easy accessibility for service and repair
5 Power Wires The red wire connects to the “+9V” and the black wire connects to the “GND”
6.2.1 Setting the Dipswitches
You need to set the dipswitches when using more than one RC-1616 remote
panel. Configure the RC-1616 unit by setting the dipswitches, as Table 9 and
Table 10 define:
Table 9: Dipswitch Definitions S2-1 to S2-8
DIP Set as follows:
S2-1 ON for Single bus operation, OFF for “XY” operation
S2-2, S2-3, and S2-4 OFF (not in use)
S2-5, S2-6, S2-7, and S2-8 Select the levels controlled by the panel (see Table 10)
Table 10: Dipswitch Settings (Levels controlled by the Panel)
S2-5 S2-6 S2-7 S2-8 Levels controlled by the Panel
OFF OFF OFF OFF Not a valid situation
ON OFF OFF OFF This panel only controls Level 11
OFF ON OFF OFF This panel only controls Level 21
OFF OFF ON OFF This panel only controls Level 31
OFF OFF OFF ON This panel only controls Level 41
ON ON OFF OFF ‘Video’ controls Level 1. ‘Audio’ controls Level 2
OFF ON ON OFF ‘Video’ controls Level 2. ‘Audio’ controls Level 3
OFF OFF ON ON ‘Video’ controls Level 3. ‘Audio’ controls Level 4
ON OFF ON OFF ‘Video’ controls Level 1. ‘Audio’ controls Level 3
ON OFF OFF ON ‘Video’ controls Level 1. ‘Audio’ controls Level 4
OFF ON OFF ON ‘Video’ controls Level 2. ‘Audio’ controls Level 4
ON ON ON OFF ‘Video’ controls Level 1 and 2. ‘Audio’ controls Level 3
ON ON OFF ON ‘Video’ controls Level 1 and 2. ‘Audio’ controls Level 4
OFF ON ON ON ‘Video’ controls Level 2. ‘Audio’ controls Level 3 and 4
ON OFF ON ON ‘Video’ controls Level 1. ‘Audio’ controls Level 3 and 4
ON ON ON ON ‘Video’ controls Level 1 and 2. ‘Audio’ controls Level 3 and 4
1 Any ‘Audio’, ‘Video Only’, ‘Audio Only’, ‘AFV’ or separate ‘Audio IN’ buttons in this situation do not function. When a
user wants to designate one of the above levels as audio, the legend in the switch (switches) may be changed accordingly
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