Kramer Electronics VP-23RC User Manual

Kramer Electronics, Ltd.

USER MANUAL

Model:

VP-23RC

Presentation Switcher / Controller



Contents

Contents

1

Introduction 1

2

Getting Started 1

2.1 Quick Start 1

3

Overview 3

3.1 About the VP-23RC 3

3.1.1 Understanding the Presentation Switcher Section 3

3.1.2 Understanding the Media / Room Controller Section 4

3.1.3 Controlling the VP-23RC 5

3.2 Connecting the VP-23RC Rear Panel 6

3.3 Recommendations for Achieving the Best Performance 7

3.4 Terminology Used in this User Manual 7

4

Your Presentation Switcher / Controller 8

4.1 The VP-23RC Front Panel 8

4.2 The VP-23RC Rear Panel 10

4.3 The VP-23RC Underside Panel 13

5

Installing the VP-23RC on a Rack 14

6

Connecting the VP-23RC Presentation Switcher Section 15

6.1 Connecting the Balanced/Unbalanced Stereo Audio Input/Output 17

6.2 Wiring the CAT 5 LINE OUT RJ-45 Connector 18

6.3 Shielded Twisted Pair (STP) / Unshielded Twisted Pair (UTP) 18

7

Connecting to the Media / Room Controller Equipment 19

7.1 Setting the Media / Room Controller PROGRAM Dipswitches 21

7.1.1 Factory Reset 21

8

Controlling the VP-23RC 22

8.1 Controlling the VP-23RC via a PC 22

8.1.1 Connecting an RS-232 port to a PC 23

8.2 Controlling Additional Kramer Machines via RS-232 and RS-485 24

8.2.1 The Presentation Switcher Section Dipswitches 24

8.3 Controlling via the ETHERNET 25

8.3.1 Connecting the ETHERNET Port directly to a PC (Crossover Cable) 26

8.3.2 Configuring Your PC 26

8.3.3 Connecting the ETHERNET Port via a Network Hub (Straight-Through Cable) 27

9

Operating Your VP-23RC 28

9.1 The Front Panel Buttons 28

9.2 Configuration of the VP-23RC 29

9.3 Media / Room Controller Section Operation 29

9.3.1 Operating the Media / Room Controller 32

9.3.2 An Example of Operating the VP-23RC 33

9.3.3 Using the Media / Room Controller Macro Buttons 33

i

Contents

9.3.4

9.4 The Presentation Switcher Section Operation 34

9.4.1 The Independent Switchers Mode 34

9.4.2 The Master Audio Mode 35

9.4.3 The Presentation Switcher SELECTOR Buttons Macro Sequence 37

10

10.1 Flash Memory Upgrade for the Presentation Switcher Section 38

10.1.1 Downloading from the Internet 38

10.1.2 Connecting the PC to the RS-232 Port 38

10.1.3 Upgrading the Firmware 39

10.2 Flash Memory Upgrade for the Media / Room Controller Section 43

10.2.1 Downloading from the Internet 43

10.2.2 Connecting the PC to the RS-232 Port 43

10.2.3 Upgrading Firmware 44

10.2.4 Installing the Web Applet 44

10.3 Troubleshooting Firmware Upgrade Issues 45

11

12

12.1 Audio Gain Control Hex Tables 47

13

Turning the Light of the Backlit Buttons On and Off 34

Flash Memory Upgrade 38

Technical Specifications 46

Hex Table 47

Communication Protocol 49

Figures

Figure 1: VP-23RC Configuration Example 6
Figure 2: VP-23RC Presentation Switcher / Controller – Front View 9
Figure 3: VP-23RC Presentation Switcher / Controller – Rear View 11
Figure 4: VP-23RC Presentation Switcher / Controller – Underside View 13
Figure 5: Connecting the VP-23RC Presentation Switcher Section 16
Figure 6: Connecting the Balanced Stereo Audio Input/Output 17
Figure 7: Connecting the Unbalanced Stereo Audio Input 17
Figure 8: Connecting the Unbalanced Stereo Audio Output 17
Figure 9: CAT 5 PINOUT 18
Figure 10: Connecting the VP-23RC Media/Room Controller Section 20
Figure 11: Connecting a PC without using a Null-modem Adapter 23
Figure 12: Default Dipswitch Settings 24
Figure 13: Control Configuration via RS-232 and RS-485 25
Figure 14: Local Area Connection Properties Window 26
Figure 15: Internet Protocol (TCP/IP) Properties Window 27
Figure 16: Example of a Typical Media/Room Controller Section Configuration 30
Figure 17: Example of a Typical Setup in the Lecture Auditorium 31
Figure 18: Labels Setup 32
Figure 19: VP-23RC Operation Example 33
Figure 20: Separate Switcher Mode 35
Figure 21: Switching in the Master Audio Mode 36
Figure 22: Presentation Switcher Macro Sequence Example 37
Figure 23: Splash Screen 39

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Contents

Figure 24: Atmel – Flip Window 39
Figure 25: Device Selection Window 40
Figure 26: Selecting the Device from the Selection Window 40
Figure 27: Loading the Hex 41
Figure 28: RS-232 Window 41
Figure 29: Atmel – Flip Window (Connected) 42
Figure 30: Atmel – Flip Window (Operation Completed) 42
Figure 31: The KFR-Programmer Window 44

Tables

Table 1: Terminology Used in this User Manual 7
Table 2: Front Panel VP-23RC Presentation Switcher / Controller Features 10
Table 3: Rear Panel VP-23RC Presentation Switcher / Controller Features 12
Table 4: VP-23RC Underside Panel Features 13
Table 5: CAT 5 PINOUT 18
Table 6: PROGRAM Dipswitch Settings 21
Table 7: Connecting an RS-232 Port to a PC 23
Table 8: Dipswitch Settings 24
Table 9: Connection Scheme (for the example in Figure 16) 30
Table 10: The Commands Configuration 32
Table 11: Technical Specifications of the VP-23RC Presentation Switcher / Controller 46
Table 12: VP-23RC Hex Table 47
Table 13: VP-23RC Master Audio Selector Hex Table 47
Table 14: Set the Audio Output Gain Control for the Groups 47
Table 15: Set the Audio Output Gain Control for the Microphone 47
Table 16: Set the Audio Output Gain Control for the Master Audio 48
Table 17: Increase or Decrease the Audio Output Gain by One Step 48
Table 18: Protocol Definitions 49
Table 19: Instruction Codes 50

iii

Introduction

1 Introduction

Welcome to Kramer Electronics! Since 1981, Kramer Electronics has been
providing a world of unique, creative, and affordable solutions to the vast range
of problems that confront the video, audio, presentation, and broadcasting
professional on a daily basis. In recent years, we have redesigned and upgraded
most of our line, making the best even better! Our 1,000-plus different models
now appear in 11 groups1 that are clearly defined by function.

Congratulations on purchasing your Kramer VP-23RC Presentation Switcher
/ Controller, which is ideal for:

 Controlling multimedia rooms, such as classrooms, auditoriums,

conference rooms and so on

 Production studios, rental and staging

The package includes:

 VP-23RC
 Windows®-based Kramer control software and Kramer RC Configuration

software

 Null-modem adapter, power cord2, and one 3.5mm to IR emitter control cable
 Kramer RC-IR2 Infrared Remote Control Transmitter (including the

required batteries and a separate user manual3)

 This user manual3

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 cables4

2.1 Quick Start

This quick start chart summarizes the basic setup and operation:

1 GROUP 1: Distribution Amplifiers; GROUP 2: Switchers and Matrix Switchers; GROUP 3: Control Systems; GROUP 4:
Format/Standards Converters; GROUP 5: Range Extenders and Repeaters; GROUP 6: Specialty AV Products; GROUP 7:
Scan Converters and Scalers; GROUP 8: Cables and Connectors; GROUP 9: Room Connectivity; GROUP 10: Accessories
and Rack Adapters; GROUP 11: Sierra Products
2 We recommend that you use only the power cord that is supplied with this machine
3 Download up-to-date Kramer user manuals from our Web site at http://www.kramerelectronics.com
4 The complete list of Kramer cables is on our Web site at http://www.kramerelectronics.com

1

Getting Started

2

KRAMER: SIMPLE CREATIVE TECHNOLOGY

Overview

3 Overview

This section describes:
 Using shielded twisted pair (STP)/unshielded twisted pair (UTP) (see

section 6.3)

 The VP-23RC (see section 3.1)

 Presentation Switcher section (see section 3.1.1)
 Media / Room Controller (see section 3.1.2)
 Means of control (see section 3.1.3)

 An example of how to connect the VP-23RC (see section 3.2)
 Recommendations for achieving the best performance (see section 3.3)
 Terminology used in this user manual (see section 3.4)

3.1 About the VP-23RC

The VP-23RC is a high quality all-in-one Presentation Switcher and Media/Room
Controller, which lets you control A/V equipment and room items such as window
blinds, room lights, and a projector lift. The VP-23RC includes two major
sections: the Presentation Switcher section and the Media/Room Controller
section, each of which can be operated independently, or in tandem.

3.1.1 Understanding the Presentation Switcher Section

The Presentation Switcher section includes three independent 4x1 audio/video
switchers1, and a master audio switcher2.

The VP-23RC Presentation Switcher section features:

 Three sets of four selector buttons (for composite video and audio, s-Video

and audio, and VGA/UXGA and audio), and four master audio selector
buttons (CV, s-Video, VGA/UXGA and Mic). Each of these 16 selector
buttons lets you select the inputs to switch to the outputs and can be
configured3 to carry out a sequence of up to 15 commands (a macro) so
that when pressing a configured button, the switching action is followed
by a macro sequence

 VGA/UXGA video bandwidth of 350MHz to ensure transparent

performance even in the most critical applications, and is HDTV compatible

 Composite/SDI video bandwidth of 650MHz, an s-Video bandwidth of

385MHz, and a CAT 5 bandwidth of 158MHz

1 A 4x1 switcher for composite video and audio, a 4x1 switcher for s-Video and audio, and a 4x1 switcher for computer
graphics (VGA/UXGA) signals with audio
2 That routes one of the pre-selected audio inputs (from these three switchers) to two separate outputs
3 By the system integrator

3

Overview

 Digital microphone input level control and digital master audio level

control

 Microphone talk-over mode1
 A CAT 5 output, with a transmission range of more than 300 feet (over 100

meters) that transmits VGA/UXGA signals2 to a remote acceptor via a
receiver

 An internal 5-Watt per channel (24kHz, 3dB) power amplifier for

connecting the speakers directly to the machine

 A panel LOCK button to prevent tampering with the front panel
 Recall of the previous setup from non-volatile memory
 Audio output level change (via RS-232)

3.1.2 Understanding the Media / Room Controller Section

The Media/Room Controller section controls A/V equipment—especially
projectors and associated equipment3—in media rooms (such as classrooms,
boardrooms, or auditoriums), as well as room functions such as lights, blinds,
a projector lift and/or a screen motor.

The VP-23RC Media/Room Controller section includes:

 Eight configurable buttons to set up any supported commands
 An Ethernet port4 for configuration and control
 Two bidirectional RS-2325 serial ports for universal display (for example,

projectors) and control of the VP-23RC (or other) switcher

 Four relays for the simplified and centralized control of room functions

(such as lights, blinds, screen settings, and so on). The relays have
normally open (NO) and normally closed (NC) contacts

 Three IR control ports
 An IR-learner for the customized remote transmitters, without the need for

an external unit IR remote control

 Macro mode operation, for programming up to 15 commands with the

press of a single button

 Firmware upgrade support

1 The microphone input signal lowers the line audio output level when the connected microphone detects sound
2 Excludes audio
3 Including the A/V equipment connected to the VP-23RC Presentation Switcher section
4 Also for controlling the Presentation Switcher section
5 The RS-232 terminal block port (item 14 in Figure 3) is also used for firmware upgrade

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KRAMER: SIMPLE CREATIVE TECHNOLOGY

Overview

3.1.3 Controlling the VP-23RC

Control the VP-23RC using the front panel buttons, or remotely via:

 RS-2321 serial commands transmitted by a touch screen system, PC, or

other serial controller

 The Kramer Infrared remote control transmitter
 The ETHERNET2

The VP-23RC is dependable, rugged, and fits into two vertical spaces (2U) of
a standard 19” professional rack.

1 The RS-232 port (item 24 in Figure 3) located in the SWITCHER CONTROL area of the rear panel
2 The Ethernet port is located in the CONTROLLER area of the rear panel and is also used for configuration of the
media/room controller section by the system integrator

5

Overview

3.2 Connecting the VP-23RC Rear Panel

The VP-23RC can be connected in different configurations, integrating the
Presentation Switcher section with the Media/Room Controller section. The
block diagram in Figure 1 shows a VP-23RC configuration example:

IR Emitters

Relays

RS-232

Figure 1: VP-23RC Configuration Example

In this example:

 Three VIDEO sources are connected to the inputs
 The three VIDEO outputs are all connected to the same projector
 The projector is connected to the RS-232 port in the CONTROLLER area
 Two of the video sources are also connected to the IR terminal blocks
 A CAT 5 UXGA receiver is connected
 Various room items are connected to the RELAY terminal blocks
 A microphone and speakers are connected, as well as the audio inputs and

outputs

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KRAMER: SIMPLE CREATIVE TECHNOLOGY

Overview

To connect the VP-23RC as illustrated in the block diagram in Figure 1:

 Connect the A/V equipment1 to the Presentation Switcher section (see

section 6)

 Connect the A/V equipment and room items to the Media/Room

Controller section (see section 7)

3.3 Recommendations for 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 noise­levels (often associated with low quality cables)

 Avoid interference from neighboring electrical appliances and position

your Kramer VP-23RC away from moisture, excessive sunlight and dust

3.4 Terminology Used in this User Manual

Table 1 defines some terms that are used in this user manual.

Table 1: Terminology Used in this User Manual

Term Definition

802.3 The standard specification for ETHERNET that is maintained by the Institute of Electrical

Dynamic Host
Configuration
Protocol (DHCP)

Gateway A network position serving as an entry to another network. On the Internet, a node or

IP Address A 32-binary digit number that identifies each sender or receiver (within a network via a

Local Area Network
(LAN)

Media Access
Control (MAC)
Address

Transmission
Control
Protocol/Internet
Protocol (TCP/IP)

and Electronics Engineers (IEEE).
Allows the network administrator to distribute IP addresses from a central point and

automatically send a new IP address when an Ethernet point is plugged into a different
network location

stopping point can be either a gateway node or a host (end-point) node.

particular server or workstation) of data (HTML pages or e-mails) that is sent in packets
across the Internet. Every device connected to an IP network must have a unique IP
address. This address is used to reference the specific unit.

Computers sharing a common communications line or wireless link, which often share a
server within a defined geographic area.

A computer's unique hardware number (or address) in a LAN or other network. On an
Ethernet LAN, the (MAC) address is identical to the Ethernet address.

The basic communication language or protocol of the Internet that breaks the message
into appropriately sized packets for the network, and can be used as a communications
protocol in an intranet or an extranet.

1 Such as DVD players, video players, speakers and so on

7

Your Presentation Switcher / Controller

4 Your Presentation Switcher / Controller

The VP-23RC front and rear panels relate in the following way:

 The Presentation Switcher section relates to the AUDIO, VIDEO and

SWITCHER CONTROL areas on the rear panel

 The Media/Room Controller section relates to the CONTROLLER area on

the rear panel

 The Power connector, the RS-232 port in the SWITCHER CONTROL

AREA and the ETHERNET port are common to both sections

This section describes the VP-23RC:

 Front panel (see section 4.1)
 Rear panel (see section 4.2)
 Underside panel (see section 4.3)

4.1 The VP-23RC Front Panel

Figure 2 and Table 2 define the front panel of the VP-23RC.

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KRAMER: SIMPLE CREATIVE TECHNOLOGY

Your Presentation Switcher / Controller

Figure 2: VP-23RC Presentation Switcher / Controller – Front View

9

Your Presentation Switcher / Controller

Table 2: Front Panel VP-23RC Presentation Switcher / Controller Features

# Feature Function

1 IR (Infrared) Receiver Signals from the Kramer remote control transmitter illuminate

2 POWER Switch Illuminated switch for turning the unit ON or OFF
3 IR IN Receiver Accepts IR remote commands for the IR learner feature1
4 MEDIA / ROOM CONTROLLER

Buttons

5 s-VIDEO (Y/C)-AUDIO SELECTOR

Buttons

6 VIDEO (CV)-AUDIO SELECTOR

Buttons

7 VGA/UXGA-AUDIO SELECTOR

Buttons

8 CV Button Press to route the selected audio signal from the composite

s-VIDEO Button Press to route the selected audio signal from the s-Video

MASTER
AUDIO

VGA/UXGA Button Press to route the selected audio signal from the

SELECTOR2

9 - Button Decrease the microphone audio signal level

10

AUDIO LEVEL

11 + Button Increase the master audio signal level
12
13 LOCK Button Press to lock the front panel buttons
14 TALK OVER Button Push the button to activate talk over4

MIC Button Press to route the microphone input to the master audio

MIC

MASTER

+ Button Increase the microphone audio signal level

- Button Decrease the master audio signal level

the LED

Control the room and the A/V equipment (from 1 to 8)2

Selects the s-Video-audio source (from 1 to 4)2

Selects the composite video-audio source (from 1 to 4)2

Selects the VGA/UXGA video-audio source from (1 to 4)2

video section to the master audio outputs3

section to the master audio outputs3

VGA/UXGA section to the master audio outputs3

outputs3

4.2 The VP-23RC Rear Panel

Figure 3 and Table 3 define the rear panel of the VP-23RC.

1 Used by the system integrator only, see section 9.2
2 Each button when pressed can also execute a macro sequence of up to 15 programmed commands (as configured by the
system integrator)
3 MASTER OUT and SPKR OUT
4 With the TALK OVER button selected, speaking into the microphone amplifies the voice of the speaker, overriding and
fading out all other audio channels. However, pressing the MIC button in the Master Audio Selector renders the Talk Over
function inactive

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Your Presentation Switcher / Controller

Figure 3: VP-23RC Presentation Switcher / Controller – Rear View

11

Your Presentation Switcher / Controller

Table 3: Rear Panel VP-23RC Presentation Switcher / Controller Features

# Feature Function

1 MIC IN Connector Connect to the microphone
2 COND. / DYN Selector Switch Push in to select a condenser, release to select a

3 CV OUT Terminal Block Connector Connect to the composite video balanced audio acceptor
4 Y/C OUT Terminal Block Connector Connect to the s-Video balanced audio acceptor
5 UXGA OUT Terminal Block Connector Connect to the VGA/UXGA balanced audio acceptor
6 MASTER OUT Terminal Block Connector Connect the master balanced audio channel acceptor1

AUDIO

7 CV IN Terminal Block Connectors Connect to the composite video balanced audio sources2

8 Y/C IN Terminal Block Connectors Connect to the s-Video balanced audio sources2

9 UXGA IN Terminal Block Connectors Connect to the VGA/UXGA balanced audio sources2
10
11 RELAY Terminal Block Connector Connect each relay2 to a room item. The PINOUT is:

12 IR Terminal Block Connectors Connect to an IR emitter cable (from IR1 to IR 3)
13 ETHERNET Connector Connects to the PC through computer networking3
14 Port 1:Terminal Block

15
16

17 CV IN BNC Connectors Connect to the composite video sources2
18 CV OUT BNC Connector Connect to the composite video acceptor
19 Y/C IN 4-pin Connectors Connect to the s-Video sources2
20 Y/C OUT 4-pin Connector Connect to the s-Video acceptor
21 UXGA IN 15-pin HD Connectors Connect to the VGA/UXGA video sources2
22 UXGA OUT 15-pin HD Connector Connect to the VGA/UXGA video acceptor
23

24 RS-232 9-pin D-sub Port
25 FLASH PROG. Button Push in to upgrade the Presentation Switcher section to

26 RS-485 Terminal Block Port Pins B (-) and A (+) are for RS-485; Pin G may be

27

28

SPKR OUT Terminal Block Connector Connect to a pair of loudspeakers

RS-232

Connector (G, Rx, Tx)4

Ports

CONTROLLER

VIDEO

SWITCHER CONTROL

Power Connector with Fuse

Port 2: 9-pin D-sub Connector

PROGRAM Dipswitches DIP1 is for firmware upgrade (see section 10.2); DIP 3

UXGA CAT5 OUT

RJ-45 Connector

Dipswitches DIPs 1, 2 and 3 are OFF, DIP 4 is ON for RS-485

dynamic microphone

NO: Normally Open; C: Common; NC: Normally
Closed

Connect to the RS-232 port of the A/V equipment or a
PC or other Serial Controller

is for factory reset; DIP 2 and DIP 4 are not used (see
section 7.1)

Connect to a remote computer graphics acceptor via
a receiver (for example, the TP-120), see section 3.2

Connect to a PC to control the VP-23RC

the latest Kramer firmware (see section 10.1), or
release for Normal (the factory default)

connected to the shield (if required)

termination
AC connector enabling power supply to the unit

1 Both the MASTER OUT and the SPKR OUT terminal block connectors receive the same signal: the MASTER OUT
outputs the signal as it is while the SPKR OUT is amplified
2 From 1 to 4
3 To configure the Media/Room Controller section or control the VP-23RC via the ETHERNET
4 Port 1 can connect to a PC to upgrade the firmware of the Media/Room Controller section

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Your Presentation Switcher / Controller

4.3 The VP-23RC Underside Panel

Figure 4 and Table 4 define the VP-23RC underside features:

RESET

VS HS

Figure 4: VP-23RC Presentation Switcher / Controller – Underside View

Table 4: VP-23RC Underside Panel Features

Feature Function

RESET Button Press to reset the unit prior to firmware upgrade (see section 10.1)
VS Switch Slide the switch to the left (to NORMAL) to retain the polarity of the

HS Switch Slide the switch to the left (to NORMAL) to retain the polarity of the

vertical sync pulses on the UXGA CAT5 OUT connector; slide the switch
to the right1 to change the vertical sync pulses on the UXGA CAT5 OUT
connector (VS) polarity to NEGATIVE polarity2

horizontal sync pulses on the UXGA CAT5 OUT connector; slide the
switch to the right1 to change the horizontal sync pulses on the UXGA
CAT5 OUT connector (HS) polarity to NEGATIVE polarity2

1 By default, both switches are set to the left
2 Downgoing syncs

13

Installing the VP-23RC on a Rack



5 Installing the VP-23RC on a Rack

This section describes what to do before installing on a rack and how to rack
mount.

Before Installing on a Rack

Before installing on a rack, be sure that the environment is
within the recommended range:

Operating temperature range +5° to +45° C (41° to 113° F)
Operating humidity range 10 to 90% RHL, non-condensing

Storage temperature range -20° to +70° C (-4° to 158° F)
Storage humidity range 5 to 95% RHL, non-condensing

To rack-mount a machine:

1. Attach both ear brackets to the

How to Rack Mount

machine. To do so, remove the
screws from each side of the
machine (3 on each side), and
replace those screws through the
ear brackets.

When installing on a 19" rack, avoid hazards by taking

CAUTION!!

care that:

1. 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.

2. Once rack mounted, enough air will still flow around
the machine.

3. The machine is placed straight in the correct
horizontal position.

4. 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.

5. The machine is earthed (grounded) in a reliable way
and is connected only to an electricity socket with
grounding. Pay particular attention 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, and that you use only the power cord that is
supplied with the machine.

2. 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:

 In some models, the front panel

may feature built-in rack ears

 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)

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KRAMER: SIMPLE CREATIVE TECHNOLOGY

Connecting the VP-23RC Presentation Switcher Section

6 Connecting the VP-23RC Presentation Switcher Section

To connect1 the VP-23RC Presentation Switcher section, as illustrated in the
example in Figure 5, do the following2:

1. Connect the following video sources:

 One3 composite video source (for example, a composite video player)

to the CV IN 1 BNC connector

 One3 s-Video source (for example, an s-Video player) to the Y/C IN 1

4-pin connector

 One3 VGA/UXGA source (for example, a computer graphics source)

to the UXGA IN 1 15-pin HD connector

2. Connect the acceptors to a projector4 as follows:

 The composite video CV OUT BNC connector to the composite video

input of the projector

 The s-Video Y/C OUT 4-pin connector to the s-Video input of the

projector

 The VGA/UXGA UXGA OUT 15-pin HD connector to the

VGA/UXGA input of the projector

3. Connect the appropriate balanced5 audio sources and acceptors (not shown in
Figure 5).

4. If required, connect the MASTER OUT terminal block connector (not shown
in Figure 5; see section 9.4.2).

5. Connect the SPKR OUT block connector to a pair of loudspeakers, by
connecting the left loudspeaker to the “L+” and the “L-” terminal block
connectors, and the right loudspeaker to the “R+” and the “R-” terminal block
connectors. Do not Ground the loudspeakers.

6. Connect the UXGA CAT5 OUT twisted pair connector (see section 6.2) to a
line receiver (for example, the TP-120 XGA Line Receiver6, which is
connected to a remote display).

7. If required, connect a dynamic or a condenser microphone7 to the MIC IN XLR
connector.

1 You do not need to connect all the inputs
2 Switch OFF the power on each device before connecting it to your VP-23RC. After connecting your VP-23RC, switch on
its power and then switch on the power on each device
3 Although in this example only one source is connected, you can connect all of the four inputs, that is, 12 in total
4 In this example a projector is used, but you can also connect separate outputs such as displays or video recorders
5 To connect audio inputs and outputs, see section 6.1
6 The receiver receives the CAT 5 signal, decodes it and outputs it to a VGA acceptor
7 Use the Con / Dyn switch (refer to the rear panel, item 2 in Figure 3) to select a dynamic microphone or a condenser

15

Connecting the VP-23RC Presentation Switcher Section

8. If required, connect a PC to the RS-232 port (see section 8.1.1).

16

Figure 5: Connecting the VP-23RC Presentation Switcher Section

KRAMER: SIMPLE CREATIVE TECHNOLOGY

Connecting the VP-23RC Presentation Switcher Section

6.1 Connecting the Balanced/Unbalanced Stereo Audio Input/Output

Figure 6 illustrates how to wire a balanced input/output connection:

Figure 6: Connecting the Balanced Stereo Audio Input/Output

Figure 7 illustrates how to wire an unbalanced input:

Figure 7: Connecting the Unbalanced Stereo Audio Input

Figure 8 illustrates how to wire an unbalanced acceptor to the balanced output
of the unit:

Figure 8: Connecting the Unbalanced Stereo Audio Output

17

Connecting the VP-23RC Presentation Switcher Section

6.2 Wiring the CAT 5 LINE OUT RJ-45 Connector

Table 5 and Figure 9 define the CAT 5 PINOUT, using a straight pin-to-pin
cable with RJ-45 connectors:

Table 5: CAT 5 PINOUT

EIA /TIA 568A EIA /TIA 568B

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 9: CAT 5 PINOUT

6.3 Shielded Twisted Pair (STP) / Unshielded Twisted Pair (UTP)

We recommend that you use shielded twisted pair (STP) cable. There are
different levels of STP cable available, and we advise you to use the best
quality STP cable that you can afford. Our non-skew-free cable, Kramer
BC-STP, which is intended for digital signals and for analog signals where
skewing is not an issue, is recommended for the VP-23RC. For cases where
there is skewing, our UTP skew-free cable, Kramer BC-XTP, may be used.
Bear in mind, though, that we advise using STP cables where possible, since
the compliance to electromagnetic interference was tested using those cables.

Although unshielded twisted pair (UTP) cable might be preferred for long
range applications, the UTP cable should be installed far away from electric
cables, motors and so on, which are prone to create electrical interference. However,
since the use of UTP cable might cause inconformity to electromagnetic standards,
Kramer does not commit to meeting the standard with UTP cable.

You can connect to a remote computer graphics acceptor via a receiver (for
example, the TP-120), see section 3.2.

Some Kramer twisted pair products include the Power Connect feature. The
VP-23RC does not have this feature.

18

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Connecting to the Media / Room Controller Equipment

7 Connecting to the Media / Room Controller Equipment

To connect1 the VP-23RC Media/Room Controller section, as the example
illustrated in Figure 10 shows, do the following2:

1. Connect the RELAY3 terminal block connectors as follows:

 Connect RELAY 1 to the blinds
 Connect RELAY 2 to the lighting system
 Connect RELAY 3 to the projector lift
 Connect RELAY 4 to the screen

2. Connect the IR terminal block connectors4, via the Kramer IR Emitter Control
Cable (C-A35/IRE-10)5, as follows:

 Connect IR 1 to the composite video player (connected

to CV IN 1 on the VP-23RC)

 Connect IR 2 to the s-Video player (connected to Y/C

IN 1 on the VP-23RC)

3. Connect the RS-232 port 1 to the projector6.

4. Set the PROGRAM dipswitches (see section 7.1).

5. Connect the power cord.

Upon completion of the installation, and before operation, the VP-23RC needs

to be configured by the system integrator (see section 9.2)

1 You do not need to connect all the items
2 Note that Figure 10 emphasizes the connections related to the Media/Room Controller section, other connections are grayed
out
3 On each 3-pole terminal block connector, connect either: C to NO, or C to NC (C is Common, NO is Normally Open and
NC is Normally Closed)
4 VP-23RC has three IR emitters. In this example only two IR emitters are connected
5 Refer to the cables’ user manuals for installation instructions. In addition, two IR Emitter Extension Cables are also
available: a 15 meter cable and a 20 meter cable
6 In this example only Port 1 is connected, but you can also connect the RS-232 port 2 to a display or other device (or, if
required, connect it to a PC for firmware upgrade, see section 10.2)

19

Connecting to the Media / Room Controller Equipment

Computer

Projector

Screen

Lighting

s-Video

Player

Blinds

Composite

Video

Player

20

Graphics Source

Projector

Lift

System

Figure 10: Connecting the VP-23RC Media/Room Controller Section

KRAMER: SIMPLE CREATIVE TECHNOLOGY

Connecting to the Media / Room Controller Equipment

7.1 Setting the Media / Room Controller PROGRAM Dipswitches

The PROGRAM dipswitches are located in the CONTROLLER area of the
rear panel (see section 7.1). Table 6 defines the PROGRAM dipswitch
settings:

Table 6: PROGRAM Dipswitch Settings

DIPS Description

1 ON for Firmware Upgrade (see section 10.2)
2 Not used
3 ON for Factory Reset (see section 7.1.1)
4 Not used

7.1.1 Factory Reset

Factory reset clears all the button macro configurations1, serial ports definition and
also returns the IP number, Gateway and Net mask to their preset default settings2.

Warning: Factory Reset erases all the configured button macros

To reset the Media/Room Controller to its default settings, do the following:

1. Turn the power on the VP-23RC OFF.

2. Set DIP 3 ON.

3. Turn the power on the VP-23RC ON.
The machine initializes after about 5 seconds

4. Set DIP 3 OFF.

1 On the Media/Room Controller buttons as well as on the Presentation Switcher SELECTOR buttons
2 IP number: 192.168.1.39, Gateway: 0.0.0.0, and Net mask: 255.255.0.0

21

Controlling the VP-23RC

8 Controlling the VP-23RC

The VP-23RC can be controlled via:

 A PC (see section 8.1)
 RS-232 and RS-485 (see section 8.2)
 The ETHERNET (see section 8.3)

8.1 Controlling the VP-23RC via a PC

To control the VP-23RC1 via the control software:

1. Connect your PC to the SWITCHER CONTROL RS-232 port on the rear
panel (see section 8.1.1).

2. Download the Windows®-based Kramer control software (provided with the
machine) to your PC.

3. Run the application. The Port window appears.

4. Select the Local Connection area, select the COM port2 to which the
VP-23RC is connected, and click OK.

The application finds the unit automatically.

1 The Media/Room Controller section can be controlled by a PC only if the MEDIA / ROOM CONTROLLER buttons are
configured (see section 9.2)
2 If you want to use the Windows®-based Kramer control software via the Ethernet, select the Remote Connection area,
insert the machine’s IP number and set the port to 5002

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Controlling the VP-23RC

8.1.1 Connecting an RS-232 port to a PC

You can connect a PC to the VP-23RC via an RS-232 port, as defined in Table 7:

Table 7: Connecting an RS-232 Port to a PC

RS-232 Rear Panel Port Location For…

Port 1 in the CONTROLLER area

RS-232 port in the SWITCHER
CONTROL area

 Media/Room Controller firmware upgrade (see section 10.2)

 Presentation Switcher firmware upgrade (see section 10.1)
 Controlling the VP-23RC via a PC (see section 8)

 Controlling other Kramer machines that are connected to

the VP-23RC via RS-485 (see section 8.2)

To connect a PC using the Null-modem adapter provided with the machine
(recommended method):

 Connect the RS-232 9-pin D-sub rear panel port1 on the VP-23RC to the

Null-modem adapter2 via a 9-wire flat cable and connect the Null-modem
adapter to the RS-232 9-pin D-sub port on your PC

To connect without using a Null-modem adapter:

 Connect the RS-232 9-pin D-sub port on your PC to the RS-232 9-pin

D-sub rear panel port on the VP-23RC, as Figure 11 illustrates

PIN 5 Con nected to PIN 5 (Ground)
PIN 3 Con nected to PIN 2
PIN 2 Con nected to PIN 3

Female DB9 (From PC)
PIN 4 Connected to PIN 6
PINS 8, 7, 1 Connected together

If a Shielded cable is used, connect the shield to PIN 5

Male DB9

Figure 11: Connecting a PC without using a Null-modem Adapter

1 Select the RS-232 port according to your needs, as defined in Table 7
2 For the male RS-232 port (port 2 in the CONTROLLER area), use a male-to-female adapter

23

Controlling the VP-23RC

OFF

ON

1 2 3 4

8.2 Controlling Additional Kramer Machines via RS-232 and RS-485

You can cascade other Kramer machines1 together with the VP-23RC via the
RS-485 port, and control them via the SWITCHER CONTROL RS-232 port
using a PC.

To connect two Kramer VP-8x8A machines to the VP-23RC, via RS-485, as
illustrated in the example in Figure 13, do the following:

1. Connect the audio/video sources and acceptors on the VP-23RC and on the
additional Kramer machines (refer to the relevant user manuals for
installation instructions).

2. Connect the RS-232 port on the VP-23RC unit to the PC using the
Null-modem adapter provided with the machine (recommended), as section
8.1.1 describes.

3. Connect the RS-485 terminal block port on the VP-23RC to the RS-485 port
on the first VP-8x8A. Connect the RS-485 port on the first VP-8x8A to the
RS-485 port on the second VP-8x8A machine.

4. Set the dipswitches as follows:

 Set the Machine number of each of the other units to a

machine number other than machine number 1

 Set Dip 4 ON on the VP-23RC (RS-485 TERM) and

terminate the RS-485 line on the last unit

8.2.1 The Presentation Switcher Section Dipswitches

The Switcher setup dipswitches are located in the SWITCHER CONTROL
area of the rear panel. Table 8 and Figure 12 define the factory default
dipswitch settings2:

Table 8: Dipswitch Settings

DIPS Function Description

1, 2, 3 Not used Set to OFF
4 RS-485

1 But not other VP-23RC machines
2 By default, all dipswitches are set to OFF

TERM

24

ON for RS-485 Line Termination with 120;
OFF for no RS-485 Line Termination

KRAMER: SIMPLE CREATIVE TECHNOLOGY

Figure 12: Default
Dipswitch Settings

Machine # 2

VP-23RC

Machine # 3

Controlling the VP-23RC

VP-8x8A

Figure 13: Control Configuration via RS-232 and RS-485

8.3 Controlling via the ETHERNET

You can control the VP-23RC via the Ethernet as well as configure the
Media/Room Controller buttons and the Presentation Switcher SELECTOR

1

buttons

1 Done by the system integrator, see section 9.2

.

VP-8x8A

25

Controlling the VP-23RC

Before using the VP-23RC via a network hub or network router, make sure that:

 The IP number of the machine is defined on the network subnet and that

its number is unique in the local network

 A Firewall is not preventing access to the device

If you need further assistance, contact your system integrator.

8.3.1 Connecting the ETHERNET Port directly to a PC (Crossover Cable)

You can connect the Ethernet port of the VP-23RC to the Ethernet port on your
PC, via a crossover cable with RJ-45 connectors.

This type of connection is recommended for identification of the factory default

IP Address of the VP-23RC and for the initial configuration (see section 9.2)

8.3.2 Configuring Your PC

After connecting the Ethernet port, configure your PC as follows:

1. Right-click the My Network Places icon on your desktop.

2. Select Properties.

3. Right-click Local Area Connection Properties.

4. Select Properties.
The Local Area Connection Properties window appears.

5. Select the Internet Protocol (TCP/IP) and click the Properties Button (see
Figure 14).

26

Figure 14: Local Area Connection Properties Window

KRAMER: SIMPLE CREATIVE TECHNOLOGY

Controlling the VP-23RC

6. Select Use the following IP Address, and fill in the details as shown in
Figure 15.

7. Click OK.

Figure 15: Internet Protocol (TCP/IP) Properties Window

Remember to restore your previous PC settings after setting the VP-23RC IP

If the Media/Room Controller is not yet configured you can control via the
Ethernet, the Presentation Switcher section only.

8.3.3 Connecting the ETHERNET Port via a Network Hub (Straight-Through
Cable)

After initially configuring the ETHERNET port, you can connect the Ethernet
port of the VP-23RC to the Ethernet port on a network hub or network router,
via a straight-through cable with RJ-45 connectors.

27

Operating Your VP-23RC

9 Operating Your VP-23RC

This section describes the:

 Front panel buttons (see section 9.1)
 VP-23RC button configuration (see section 9.2)
 Media/Room Control section operation (see section 9.3)
 Presentation Switcher section operation (see section 9.4)

9.1 The Front Panel Buttons

The front panel buttons include the:

 MEDIA / ROOM CONTROL buttons1 (1 to 8)
 VIDEO (CV)-AUDIO SELECTOR buttons1 (1 to 4)
 S-VIDEO (Y/C)-AUDIO SELECTOR buttons1 (1 to 4)
 VGA/UXGA-AUDIO SELECTOR buttons1 (1 to 4)
 MASTER AUDIO SELECTOR buttons1 (CV, S-VIDEO, VGA/UXGA

and MIC)

 TALK OVER button2, which lowers or mutes the MASTER AUDIO

LEVEL when the microphone picks up speech3

 MIC AUDIO LEVEL up and down buttons to adjust the level at the

master audio out4 connectors5 and the talk-over function threshold6

 MASTER AUDIO LEVEL up and down buttons to adjust the audio

output level at the master audio out connectors4, without influencing any
other audio output

 Panel LOCK button to lock the front panel buttons

By default7, the stereo audio signals switch together with the video, that is, the

unit is set in audio-follow-video8 (AFV) mode. You can change to breakaway

mode9, via the RS-232 port in the SWITCHER CONTROL area

1 Which can be programmed to execute a sequence of up to 15 commands per button (see section 9.4.3)
2 Two channels are active in the Talk Over mode, a source selected via the MASTER AUDIO SELECTOR buttons and the
microphone channel
3 Adjust the microphone level via the MIC AUDIO LEVEL + and - buttons
4 MASTER OUT and SPKR OUT
5 Useful in the TALK OVER mode, when the microphone level needs to be adjusted separately
6 Achieving optimum results for a particular environment when using a microphone may require experimentation in adjusting
the AUDIO and MIC LEVELS
7 This is, the pre-installed factory default. The default can be modified via the Windows®-based Kramer control software
8 In which all operations relate to both the video and the audio channels
9 In which video and audio channels switch independently

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Operating Your VP-23RC

Pressing an illuminated AUDIO SELECTOR button for more than 2 seconds
disconnects that master audio output, and the button no longer illuminates.
The video will continue to display but without sound.

The Master Audio automatically follows the last input selected (for example,
VGA/UXGA), regardless of the switcher group (VGA, s-Video, or composite
video), and the respective button1 under the MASTER AUDIO SELECTOR
section illuminates, indicating that the selected input (for example,
VGA/UXGA) is routed to the master outputs.

9.2 Configuration of the VP-23RC

The Media/Room Controller section and the Presentation Switcher SELECTOR
buttons are configured by the system integrator. For further details, refer to the
Kramer RC configuration and Installation Guide PDF file, located in the
technical support section on our Web site: http://www.kramerelectronics.com

9.3 Media / Room Controller Section Operation

The Media/Room Controller section is easy-to-use, as the example in Figure
16 and Table 9 describes2:

1 Replacing the previous illuminated button
2 This example describes how to setup one of an unlimited number of available setups for the system

29

Composite

Video Player

Projector

Screen

Blinds

INTERNET

Projector

Operating Your VP-23RC

s-Video

Player

Lift

Lighting
System

Figure 16: Example of a Typical Media/Room Controller Section Configuration

Table 9: Connection Scheme (for the example in Figure 16)

RELAY 1 The blinds
RELAY 2 The lighting system
RELAY 3 Projector lift motor
RELAY 4 The screen settings motor
IR 1 PIN1 A composite video player
IR 2 PIN1 An s-Video player
IR 3 PIN Not connected in this example
RS-232 Terminal Block Connector (1 and 2) (1) A projector; (2) an LCD2

Ethernet

1 Connected via the IR emitter
2 Alternatively, the second RS-232 port can be used to control another A/V unit

30

This connector: Controls:

The VP-23RC via a remote control PC

KRAMER: SIMPLE CREATIVE TECHNOLOGY

Operating Your VP-23RC

VCR

DVD

Figure 17 shows a common setup for the VP-23RC in a media room. An
overhead projector and screen, speakers, lights; and a cabinet with a DVD and a
VCR inside, are all controlled via the VP-23RC. The presenter’s laptop is located
on the podium (also connected to the VP-23RC), alongside the VP-23RC.

Figure 17: Example of a Typical Setup in the Lecture Auditorium

31

Operating Your VP-23RC

OFF

DVD

VCR

Help

DOWN

9.3.1 Operating the Media / Room Controller

In the following example1, illustrated in Figure 18, the VP-23RC is labeled2
with specific functions and each button is programmed3 to perform several
tasks4 as defined in Table 10.

Each button may be assigned with up to 15 commands.

Table 10: The Commands Configuration

Button The Macro Sequence

ON

PC

Figure 18: Labels Setup

Vol
UP

Vol

1

2

3

4

5

6

7

8

 Power up the projector
 Power up the DVD player
 Power up the video player
 Roll down the projector screen
 Lower down the projector

from the ceiling

 1 minute delay [for the

projector to heat up]

 Turn lights off
 Close blinds
 30 second delay for blinds to close
 The projector selects the PC input

 Open blinds
 Turn lights on
 30 second delay for blinds to open
 Power down the projector
 Lift the projector up to the ceiling
 Stop the DVD player
 Power down the DVD player
 Stop the video player
 Power down the video player
 Roll up the projector screen

 Stop the video player
 The projector selects the DVD input
 Play the DVD

 Audio level up
 Stop the DVD

 Stop the VCR
 The projector selects a PC input

 Stop the DVD
 The projector selects the VCR input
 Play the VCR

 Signals for technical assistance
 Audio level down

1 This is only one example among numerous possibilities, each button can be configured as required
2 To insert labels, refer to the Kramer RC configuration and Installation Guide PDF file, located in the technical support
section on our Web site: http://www.kramerelectronics.com
3 By the system integrator
4 A macro sequence, including up to 15 commands per button, carried out one after the other

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Operating Your VP-23RC

VCR

DVD

9.3.2 An Example of Operating the VP-23RC

Figure 19 shows an operating example:

ON

DVD

Vol

Vol

UP

DOWN

PC

VCR

PC

OFF

Figure 19: VP-23RC Operation Example

9.3.3 Using the Media / Room Controller Macro Buttons

Pressing any button initiates a macro sequence1, during which the button
blinks (as programmed by the system integrator).

If during the macro sequence the button blinks faster than usual2, this indicates
that a malfunction has been detected3 and if the problem is critical, the VP-23RC
exits the macro sequence4.

To solve the problem, summon technical help5

1 The macro sequence can be carried out instantly or can take a while, depending on the delay times included in the sequence
2 Six times per second, as compared with twice per second during normal operation
3 For example, a faulty DVD player
4 This procedure and others are set by the system integrator
5 In this example, press the HELP DESK button

33

Operating Your VP-23RC

If you want to stop a macro sequence, press and hold that button for 5
seconds. The sequence will come to an end. You can resume operation by
pressing any button1. The unit will carry out the macro sequence commands
from the beginning.

9.3.4 Turning the Light of the Backlit Buttons On and Off

When the room is darkened, the buttons can be illuminated for convenience.
To turn on the backlight, press buttons 3 and 7 simultaneously
To turn off the backlight, press the respective buttons once again.

9.4 The Presentation Switcher Section Operation

The Presentation Switcher section has two operation modes:

 The Independent Switchers mode (see section 9.4.1)
 The Master Audio mode (see section 9.4.2)

In both operation modes, if configured, the SELECTOR buttons, once
pressed, execute a sequence of configured commands (see section 9.4.3).

9.4.1 The Independent Switchers Mode

In the independent switchers mode, the three switchers of the VP-23RC operate
independently from each other, as illustrated in Figure 20 (the Media/Room
Controller connections are not shown in this illustration). You can route one of
the 4 CV inputs, one of the 4 Y/C inputs and one of the 4 VGA/UXGA inputs to
the corresponding CV, Y/C and UXGA2 outputs, respectively.

To switch an input to an output3:

 Press one4 button from the set of four buttons in the VIDEO

(CV)-AUDIO SELECTOR section and/or5

 One button from the set of four buttons in the s-VIDEO (Y/C)-AUDIO

SELECTOR section and/or5

 One button from the set of four buttons in the VGA/UXGA-Audio

SELECTOR section

1 Including the button you kept pressed to stop the macro sequence
2 And to the UXGA CAT5 OUT connector (audio excluded)
3 Assuming that all inputs are connected
4 You cannot select more than one button in a section
5 You can overlook a section and choose not to select a button from it

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KRAMER: SIMPLE CREATIVE TECHNOLOGY

Operating Your VP-23RC

UXGA Sources

UXGA Acceptor

Speakers

Each pressed button illuminates1, indicating selection and outputting of that
video and audio source.

If a button includes a macro sequence, it will be executed when pressing that
button.









CV Video Sources

CV Video Acceptor

s-Video Sources



s-Video Acceptor

Figure 20: Separate Switcher Mode

9.4.2 The Master Audio Mode

In the master audio mode, you can route an audio input signal from any of the
A/V switchers or from the microphone, to the MASTER OUT and/or SPKR
OUT outputs.

Figure 21 shows a plasma-display connected to the VP-23RC unit via the
UXGA OUT HD15F connector, and a pair of speakers connected to the SPKR
OUT terminal block connector (the Media/Room Controller connections are
not shown in this illustration).

If a button includes a macro sequence, it will be executed when pressing that
button.

1 Pressing an illuminated button for more than 2 seconds will disconnect the output and the button will no longer illuminate

35

Operating Your VP-23RC

Speaker

Display

Speaker

UXGA Source

(I) When pressing button 2 under the VGA/UXGA-AUDIO SELECTOR, the
UXGA IN 2 signal is routed to the display1. The VGA/UXGA button under
the MASTER AUDIO SELECTOR section automatically illuminates, and the
UXGA audio signal is routed to the SPKR OUT2 and the MASTER OUT2
terminal block connectors simultaneously3.

(II) After connecting a microphone to the MIC IN XLR connector, the MIC
button under the MASTER AUDIO SELECTOR section illuminates and the
speakers output the MIC IN4 audio signal, while retaining the UXGA display.
You can return to the UXGA audio output by pressing the VGA/UXGA
button under the MASTER AUDIO SELECTOR section once again.

I

II

I

II

Presenter’s

Microphone

Figure 21: Switching in the Master Audio Mode

1 The UXGA output is simultaneously routed to the UXGA CAT 5 OUT connector
2 The MASTER audio signal is routed simultaneously to the SPKR OUT and the MASTER OUT channels. The only
difference between them is that the SPKR OUT channel has an internal power amplifier, which lets you connect the speakers
directly to the unit
3 As well as to the AUDIO UXGA OUT terminal block connector, which is not connected in this example
4 Another way to use the microphone is to press the TALK OVER button:
microphone picks up speech

the main audio level is lowered when the

36

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Operating Your VP-23RC

9.4.3 The Presentation Switcher SELECTOR Buttons Macro Sequence

The SELECTOR buttons can be configured to execute a sequence of
commands (a macro) in a similar way to the Media / Room Controller buttons
(see section 9.3.1) so that when a SELECTOR button is pressed, it will first
perform the switching action and concurrently carry out the macro. The
example in Figure 22 illustrates a macro sequence that can be programmed to
a Presentation Switcher SELECTOR button.

Figure 22: Presentation Switcher Macro Sequence Example

Note that you cannot stop a macro on the presentation switcher SELECTOR

buttons once it is in process

37

Flash Memory Upgrade

10 Flash Memory Upgrade

The firmware is upgraded separately for the Presentation Switcher section (see
section 10.1) and for the Media/Room Controller section (see section 10.2).

10.1 Flash Memory Upgrade for the Presentation Switcher Section

The VP-23RC firmware for the Presentation Switcher section is located in
FLASH memory, which lets you upgrade to the latest Kramer firmware
version in minutes! The process involves:

 Downloading from the Internet (see section 10.1.1)
 Connecting the PC to the RS-232 port (see section 10.1.2)
 Upgrading Firmware (see section 10.1.3)

10.1.1 Downloading from the Internet

You can download the up-to-date file1 from the Internet. To do so:

1. Go to our Web site at http://www.kramerelectronics.com and download the
file: “FLIP_VP23RC.zip” from the Technical Support section.

2. Extract the file: “FLIP_VP23RC.zip” to a folder (for example, C:\Program
Files\Kramer Flash).

3. Create a shortcut on your desktop to the file: “FLIP.EXE”.

10.1.2 Connecting the PC to the RS-232 Port

Before installing the latest Kramer firmware version on a VP-23RC unit, do
the following:

1. Connect the RS-232 DB9 rear panel port in the SWITCHER CONTROL area
to the Null-modem adapter via a 9-wire flat cable, and connect the Null­modem adapter to the RS-232 DB9 port on your PC (as in section 8.1.1).

2. On the rear panel, push in the FLASH PROG. button (to program), using a
screwdriver.

3. Connect the power on the VP-23RC unit and switch it ON.

4. On the underside panel, push in the RESET button (see Figure 4), using a
screwdriver.

1 The files indicated in this section are given as an example only. These file names are liable to change from time to time

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Flash Memory Upgrade

10.1.3 Upgrading the Firmware

Follow these steps to upgrade the firmware for the Presentation Switcher
section:

1. Double click the desktop icon: “Shortcut to FLIP.EXE”.
The Splash screen appears as follows:

Figure 23: Splash Screen

2. After a few seconds, the Splash screen is replaced by the “Atmel – Flip”
window:

Figure 24: Atmel – Flip Window

3. Press the keyboard shortcut key F2 (or select the “Select” command from the
Device menu, or press the integrated circuit icon in the upper right corner of the

window).
The “ Device Selection” window appears:

39

Flash Memory Upgrade

Figure 25: Device Selection Window

4. Click the button next to the name of the device and select from the list:
AT89C51RD2:

AT89C51RD 2

T89C5 1RD2

Figure 26: Selecting the Device from the Selection Window

5. Click OK and select “Load Hex” from the File menu.

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KRAMER: SIMPLE CREATIVE TECHNOLOGY

Flash Memory Upgrade

A

Figure 27: Loading the Hex

6. The Open File window opens. Select the correct HEX file that contains the
updated version of the firmware for VP-23RC (for example,
23RCM_V1p2.hex) and click Open.

7. Press the keyboard shortcut key F3 (or select the “Communication / RS232”
command from the Settings menu, or press the keys: Alt SCR).
The “ RS232” window appears. Change the COM port according to the
configuration of your computer and select the 9600 baud rate:

Figure 28: RS-232 Window

8. Click Connect.
In the “Atmel – Flip” window, in the Operations Flow column, the Run button
is active, and the name of the chip appears as the name of the third column:
AT89C51RD2.
Verify that in the Buffer Information column, the “HEX File: VP23RC.hex”
appears.

41

Flash Memory Upgrade

hex

A

VP23RC.hex

Figure 29: Atmel – Flip Window (Connected)

9. Click Run.
After each stage of the operation is completed, the check-box for that stage
becomes colored green1.
When the operation is completed, all 4 check-boxes will be colored green and
the status bar message: Memory Verify Pass appears2:

A

VP23RC.

Figure 30: Atmel – Flip Window (Operation Completed)

10. Close the “Atmel – Flip” window.

11. Disconnect the power on the VP-23RC.

1 See also the blue progress indicator on the status bar
2 If an error message: “ Not Finished” shows, click Run again

42

KRAMER: SIMPLE CREATIVE TECHNOLOGY

Flash Memory Upgrade

12. Disconnect the RS-232 rear panel port on the VP-23RC unit from the
Null-modem adapter.

13. Release the FLASH PROG button on rear panel.

14. Connect the power to the VP-23RC.

10.2 Flash Memory Upgrade for the Media / Room Controller Section

The VP-23RC Media/Room control firmware is located in FLASH memory,
which lets you upgrade to the latest Kramer firmware version in minutes!

The process involves:

 Downloading the upgrade package from the Internet
 Connecting the PC to the RS-232 port 1 in the CONTROLLER area
 Upgrading the firmware
 Installing the Web Applet

10.2.1 Downloading from the Internet

You can download the up-to-date file1 from the Internet. To do so:

1. Go to our Web site at http://www.Kramerelectronics.com and download the
file: “RC_vp23rc_xx.zip” from the technical support section.

2. Extract the file “RC_vp23rc_xx.zip ” package, which includes the
KFR-Programmer application setup and the .s19 firmware file, to a folder (for
example, C:\Program Files\KFR Upgrade).

3. Install the KFR-Programmer Application.

10.2.2 Connecting the PC to the RS-232 Port

Before installing the latest Kramer firmware version on the VP-23RC, do the
following:

1. Connect the RS-232 Terminal Block Connector rear panel port 1 in the
CONTROLLER area to the Null-modem adapter via a 3-wire split cable, and
connect the Null-modem adapter to the RS-232 9-pin D-sub port on your PC.

2. Set DIP 1 on the PROGRAM dipswitches located in the CONTROLLER area
ON.

3. Connect the power on your machine.

1 File names are liable to change from time to time

43

Flash Memory Upgrade

10.2.3 Upgrading Firmware

Follow these steps to upgrade the firmware:

1. Double click the KFR-Programmer desktop icon.
The KFR-Programmer window appears (see Figure 31).

Figure 31: The KFR-Programmer Window

2. Select the required COM Port1.

3. Press the File button to select the .s19 firmware file included in the package.

4. Press the Send button to download the file. The Send button lights red.

5. Wait until downloading is completed and the red Send button turns off.

6. Set DIP 1 on the PROGRAM dipswitches located in the CONTROLLER area
OFF.

10.2.4

Installing the Web Applet

2

Follow these steps to install the Web Applet:

1. Connect RC device to your PC through computer networking.

2. Start RC Configuration Software and connect to the RC device (see RC
Configuration and Installation Guide).

3. In the Device menu select Upgrade Applet option and browse to MC.dat file
included in the package

Wait until uploading is completed and the success message appears. Click
OK.

1 To which the VP-23RC is connected on your PC
2 This section is applicable only to firmware version 26.0 and higher and requires RC Configuration Software version

1.26.0.38 and higher

44

KRAMER: SIMPLE CREATIVE TECHNOLOGY

Flash Memory Upgrade

10.3 Troubleshooting Firmware Upgrade Issues

If the RC device does not communicate and it is impossible to perform the
flash upgrade procedure, the problem may sometimes be solved by performing
the factory default restore procedure.

To restore the factory default settings, do the following:

1. Turn off the VP-23RC unit.

2. In the CONTROLLER area of the rear panel, set DIP-switch 3 ON for factory
reset.

3. Turn on the machine.

4. Wait for about 5 seconds (factory default is now complete, but the machine has
to be restarted to function properly).

5. Turn off the machine.

6. Turn off the factory default DIP-switch.

7. Turn on the machine.

45

Technical Specifications

11 Technical Specifications

Table 11 includes the technical specifications1:

Table 11: Technical Specifications of the VP-23RC Presentation Switcher / Controller

PORTS (CONTROLLER): 2 RS-232 on a terminal block connector and a DB 9M; 1 ETHERNET

INPUTS: 4 VGA / XGA on 15-pin HD connectors

OUTPUTS: 1 x VGA / XGA on a 15-pin HD connector

MAX. OUTPUT LEVEL: VIDEO: YC: 1.8Vpp; CV: 1.8Vpp

BANDWIDTH (-3dB): VIDEO: YC: 385MHz; CV: 650MHz

DIFF. GAIN: YC: 0.03%; CV: 0.03%; CAT 5: 6.4%; XGA: 0.15%
DIFF. PHASE: YC: 0.03 Deg.; CV: 0.03 Deg.; CAT 5: 0.2 Deg.; XGA: 0.09 Deg.
K-FACTOR: <0.1%
S/N RATIO: VIDEO: YC: 81dB; CV: 75dB

CROSSTALK (all hostile): VIDEO: -49dB @5MHZ AUDIO: Group: < -76dB

CONTROLS: Channel selector for video and audio, for YC, CV and XGA; master audio

COUPLING: VIDEO: YC, CV and XGA: DC AUDIO: AC, input and output
AUDIO THD + NOISE@1kHZ: Group: 0.08%; Speakers: 2% (max pwr); Master: 0.25%
AUDIO 2nd HARMONIC: Group: 0.065%; Speakers: 1.6% (max pwr); Master: 0.155%
POWER SOURCE: 230VAC, 50/60Hz (115VAC, USA) 35VA
DIMENSIONS: 19-inch (W), 7-inch (D) 2U (H) rack-mountable
WEIGHT: 3.8 kg (8.4 lbs.) approx.
ACCESSORIES: 3.5mm to IR Emitter Control Cable (C-A35/IRE-10); power cord, infra-red

OPTIONS: 3.5mm to IR Emitter Control Cable (C-A35/IRE-10); 15 meter and 20 meter

RJ-45 port

4 s-Video, 1 Vpp (Y), 0.3Vpp (C) / 75  on 4 pin connectors
4 composite video 1Vpp / 75  on BNC connectors

Each input is accompanied by the appropriate balanced stereo-audio

channels: +4dBm / 50 k on detachable terminal block connectors
Mic: 3mV / 10 k condenser / dynamic on an XLR connector

IR learner

1 s-Video - 1 Vpp (Y), 0.3Vpp (C), / 75  on 4 pin connector
1 composite video 1 Vpp / 75  on a BNC connector

1 STP CAT5 connector (Line OUT)

Each output is accompanied by the appropriate balanced stereo-audio
channel: +4dBm / 150  on detachable terminal blocks
1 master stereo audio +4dBm / 150  on a detachable 4-pin terminal block
1 stereo speaker output 2x5W continuous into 4

4 relays on terminal block connectors (36V AC or DC, 2A, 60VAC

maximum on non-inductive load)

3 IR emitters on terminal block connectors

XGA: 1.7Vpp; CAT 5: 1.3Vpp

XGA: 350MHz; CAT 5: 158MHz

CAT 5: 59dB; XGA: 75dB
(unweighted)

output selector, audio level, talkover, lock, RS-232, RS-485, and Ethernet

remote control transmitter, Java based control software (internal),
Windows®-based Kramer control software

IR Emitter Extension Cables

AUDIO: Group: 20dBm
Master: 15dBm

AUDIO: Group: 46kHz
Speakers: 40kHz; Master: 33kHz

AUDIO: Group: 74dB
Speakers: 53dB (max pwr weighted)
Master out: 72dB

Master: < -69dB @1kHz

1 Specifications are subject to change without notice

46

KRAMER: SIMPLE CREATIVE TECHNOLOGY

Hex Table

12 Hex Table

Table 12 lists the Hex values (which the protocol in section 13 describes in
more detail) for the VP-23RC Presentation Switcher section:

Table 12: VP-23RC Hex Table

Inputs

Group #

In 1 01 81 81 81
In 2 01 82 81 81

Video

In 3 01 83 81 81

Composite

In 4 01 84 81 81
In 1
In 2
In 3

s-Video

In 4
In 1
In 2

VGA

In 3
In 4

Master Audio Selector (Group Audio OUT) Audio Master OUT

Composite Video Audio OUT 02 81 81 81
s-Video Audio OUT 02 82 81 81
VGA Audio OUT 02 83 81 81
Microphone 02 84 81 81
Disconnect All 02 80 81 81

Composite Video

OUT and Audio

OUT CV

s-Video OUT and

Audio OUT s-Video

01 81 82 81
01 82 82 81
01 83 82 81
01 84 82 81

VGA OUT and

Audio OUT VGA

01 81 83 81
01 82 83 81
01 83 83 81
01 84 83 81

Table 13: VP-23RC Master Audio Selector Hex Table

12.1 Audio Gain Control Hex Tables

The following tables describe the audio gain controls.

Table 14: Set the Audio Output Gain Control for the Groups

Composite Video s-Video VGA Notes

16 81 80 81 16 82 80 81 16 83 80 81 Mute

…

16 81 EC 81 16 82 EC 81 16 83 EC 81 0dB (1:1)

…

16 81 FF 81 16 82 FF 81 16 83 FF 81 9dB

Table 15: Set the Audio Output Gain Control for the Microphone

Audio Gain Control for Groups

…

…

Audio Gain Control for Microphone

16 84 80 81 Mute

…

16 84 CD 81

…

16 84 FF 81 Maximum

…

…

47

Hex Table

Table 16: Set the Audio Output Gain Control for the Master Audio

Audio Gain Control for Master Out

16 85 80 81 Mute

…

Table 17: Increase or Decrease the Audio Output Gain by One Step

Composite

Increase

Decrease

16 85 F9 81 0dB

…

16 85 FF 81 3dB

Video

18 81 80 81 18 82 80 81 18 83 80 81 18 84 80 81 18 85 80 81
18 81 81 81 18 82 81 81 18 83 81 81 18 84 81 81 18 85 81 81

s-Video VGA Microphone Master Out

48

KRAMER: SIMPLE CREATIVE TECHNOLOGY

Communication Protocol

13 Communication Protocol

This protocol, which enables RS-232 communication between the VP-23RC
and the PC, uses 4 bytes of information, and data is at 9600 baud, no parity, 8
data bits and 1 stop bit.

Table 18: Protocol Definitions

MSB LSB

0 D N5 N4 N3 N2 N1 N0
7 6 5 4 3 2 1 0

1st byte

1 0 0 0 0 I2 I1 I0
7 6 5 4 3 2 1 0

2nd byte

1 0 0 0 0 0 O1 O0
7 6 5 4 3 2 1 0

3rd byte

1 0 0 0 M3 M2 M1 M0
7 6 5 4 3 2 1 0

4th byte

1st BYTE: Bit 7 – Defined as 0.

These 6 bits define the function that is to be performed by the switcher(s). Similarly, if a function is performed via the
machine’s keyboard, then these bits are set with the INSTRUCTION NO, which was performed. The instruction codes are
defined according to the table below (INSTRUCTION NO. is the value to be set for N5…N0).
2nd BYTE: Bit 7 – Defined as 1.
Bits 3 – 6 - Defined as 0.
I2… I0 – “ INPUT”.
For disconnect, set as 0. For other operations, these bits are defined according to Table 19.
3rd BYTE: Bit 7 – defined as 1.
Bits 2-6 defined as 0.
O1, O0 – “ OUTPUT”
For operations, these bits are defined according to Table 19.
4th BYTE: Bit 7 – Defined as 1.
Bits 3-6 Defined as 0.
M3… M0 – “MACHINE NUMBER” .
MACHINE NUMBER = (DIPSWITCH CODE) + 1.

DESTINATION

D – “DESTINATION BIT”.
This bit is always low, when sending from the PC to the switchers, and high for information sent
to the PC.
N5…N0 – “INSTRUCTION” .

INSTRUCTION

INPUT

OUTPUT

MACHINE NUMBER

49

Communication Protocol

Table 19: Instruction Codes

INSTRUCTION DEFINITION FOR SPECIFIC INSTRUCTION NOTE

#

0 RESET MACHINE 0 0 1
1 SWITCH GROUPS 1-4 Set equal to video and audio

2 SWITCH AUDIO OUTPUTS 1-5* Set equal to audio output to

5 REQUEST GROUP STATUS 0 1-3 Set equal to the group of

6 REQUEST STATUS OF

8 BREAKAWAY SETTING 0 0 – Audio-follow-video

11 REQUEST BREAKAWAY

16 ERROR Don’t care 0 – Invalid instruction

18 RESET MACHINE 0 0 1
22 SET AUDIO GAIN OF AUDIO

24 INCREASE/DECREASE AUDIO

25 REQUEST GAIN 1-5* 0 – Video gain

30 LOCK FRONT PANEL 0 – Panel unlocked

31 REQUEST WHETHER PANEL

44 MEDIA CONTROL Set equal to switch number Switch data
45 REQUEST MEDIA CONTROL

57 SET AUTO SAVE 1 – Autosave

61 IDENTIFY MACHINE 1 or 2 – Machine name

62 DEFINE MACHINE 1 – Number of inputs

* 1 – for CV group, 2 – for SV group, 3 – for VGA group, 4 – for microphone, 5 – for master audio out
NOTES on to Table 19:

NOTE 1

When the master switcher is reset, (e.g. when it is turned on), the reset code is sent to the PC. If this code is sent to the
switchers, it will reset according to the present power-down settings.

NOTE 2

These are bi-directional definitions. That is, if the switcher receives the code, it will perform the instruction; and if the
instruction is performed (due to a keystroke operation on the front panel), then these codes are sent. For example, if:
0000 0001 Instruction “Switch Groups”
1000 0010 Input #2
1000 1001 in composite video group
1000 0001 Machine #1 (master)
Was sent from the PC, then the switcher (machine #1) will switch input 2 in composite video group to its output. If the user
switched input 4 in the VGA group via the front panel keypad, then the switcher will send:
0100 0001
1000 0100
1000 0011
1000 0001 to the PC.
When the PC sends instruction #1 or #2 to the switcher, then, if the instruction is valid, the switcher replies by sending the
same four bytes to the PC that were sent (except for the first byte, where the DESTINATION bit is set high).

DESCRIPTION INPUT OUTPUT

inputs to be switched for the
relative group

be switched to Master Audio out

MASTER AUDIO OUTPUT

SETTING

OUTPUT

GAIN

IS LOCKED

SETTINGS

0 1 3

0 0 3

1-5* Gain value 7

1-5* 0 – Increase gain

1 – Panel locked
0 0 3

Set equal to switch number 0

2 – No save

3 or 4 – Program version

2 – Number of outputs



1-3 Set equal to group to
which output is to be
switched
1 2

which status is required

1 – Audio breakaway

1 – Out of range

1 – Decrease gain

1 – Audio gain
0

Don’t care 5

0 – request first 4 digits
1 – request first suffix
10 – request first prefix
1 – For video
2 – For audio

2

3

2

4

8

3, 9

6

3

50

KRAMER: SIMPLE CREATIVE TECHNOLOGY

Communication Protocol

NOTE 3

The reply to a “ REQUEST” instruction is as follows: the same instruction and input codes as were sent are returned, and the
OUTPUT is assigned to the value of the requested parameter. The reply to the instruction #5 (what is the status of the VGA
group?):
0000 0101
1000 0000
1000 0011
1000 0001
Would be:
0100 0101
1000 0000
1000 0100
1000 0001

NOTE 4

An error code is returned to the PC if an invalid code was sent to the switcher (for example, when trying to switch an input or
a group which is greater than the highest one defined). This code is also returned to the PC if an RS-232 instruction is sent
while the machine is being programmed via the front panel. Reception of this code by the switcher will not be valid.

NOTE 5

Under normal conditions, the machine’ s present status is saved each time a change is made. The power-down save (the auto
save) may be disabled using this code. Note that each time that the machine is turned ON, the auto save function is
automatically set.

NOTE 6

This is a request to identify the switchers in a system. If the INPUT is set as 1 or 2, the machine will send its name. The reply
is the decimal value of the INPUT and the OUTPUT. For example, the reply to the request to send the machine’ s name (for
machine #001) will be:
0111 1101
1000 0000 (i.e. 128+0)
1001 0111 (i.e. 128+23)
1000 0001
If the request for identification is sent with the INPUT set as 3 or 4, the appropriate machine will send its software version
number. Again, the reply would be the decimal value of the INPUT and OUTPUT - the INPUT representing the number in
front of the decimal point, and the OUTPUT representing the number following the decimal point. For example, for version

3.5 the reply will be:
0111 1101
1000 0011 (i.e. 128+3)
1000 0101 (i.e. 128+5)
1000 0001

NOTE 7

GAIN VALUE – Number from 0 to 127

NOTE 8

Answer = Current Audio Gain (0 –127)

51

LIMI TED WA RRANTY

Except as below, this warranty covers all defects in material or workmanship in this product. The following are not covered

uncertain as to whether a dealer is authorized, please contact Kramer at one of the agents listed in the Web site

initial technical adjustments (set-up), including adjustment of user controls or programming. These costs are the

implied warranty lasts and/or do not allow the exclusion or limitation of incidental or consequential damages, so the above

Kramer Electronics (hereafter ) warrants this product free from defects in material and workmanship under the
following terms.

HOW LONG IS THE WA RRANTY

Labor and parts are warranted for seven years from the date of the first customer purchase.

WHO IS PROTECT ED?

Only the first purchase customer may enforce this warranty.

WHAT IS COVERED AND WHAT IS NOT COVERED

Kramer

by the warranty:

1. Any product which is not distributed by Kramer, or which is not purchased from an authorized Kramer dealer. If you are

www.kramerelectronics.com.

2. Any product, on which the serial number has been defaced, modified or removed, or on which the WARRANTY VOID
TAMPERED sticker has been torn,

IF reattached, removed or otherwise interfered with.

3. Damage, deterioration or malfunction resulting from:

i) Accident, misuse, abuse, neglect, fire, water, lightning or other acts of nature
ii) Product modification, or failure to follow instructions supplied with the product
iii) Repair or attempted repair by anyone not authorized by Kramer
iv) Any shipment of the product (claims must be presented to the carrier)
v) Removal or installation of the product
vi) Any other cause, which does not relate to a product defect
vii) Cartons, equipment enclosures, cables or accessories used in conjunction with the product

WHAT WE WILL PAY FO R AND WHAT WE WILL NOT PAY F OR

We will pay labor and material expenses for covered items. We will not pay for the following:

1. Removal or installations charges.

2. Costs of

responsibility of the Kramer dealer from whom the product was purchased.

3. Shipping charges.

HOW YOU C AN GET WARRANTY S ERVICE

1. To obtain service on you product, you must take or ship it prepaid to any authorized Kramer service center.

2. Whenever warranty service is required, the original dated invoice (or a copy) must be presented as proof of warranty

coverage, and should be included in any shipment of the product. Please also include in any mailing a contact name,
company, address, and a description of the problem(s).

3. For the name of the nearest Kramer authorized service center, consult your authorized dealer.

LIMI TATION OF IMPLIE D WARRAN TIES

All implied warranties, including warranties of merchantability and fitness for a particular purpose, are limited in duration to
the length of this warranty.

EXCLUSIO N OF DAMAGE S

The liability of Kramer for any effective products is limited to the repair or replacement of the product at our option. Kramer shall
not be liable for:

1. Damage to other property caused by defects in this product, damages based upon inconvenience, loss of use of the product, loss

of time, commercial loss; or:

2. Any other damages, whether incidental, consequential or otherwise. Some countries may not allow limitations on how long an

limitations and exclusions may not apply to you.

This warranty gives you specific legal rights, and you may also have other rights, which vary from place to place.

All products returned to Kramer for service must have prior approval. This may be obtained from your dealer.

NOTE:

This equipment has been tested to determine compliance with the requirements of:

EN-50081: "Electromagnetic compatibility (EMC);

Residential, commercial and light industry"
EN-50082: "Electromagnetic compatibility (EMC) generic immunity standard.

CFR-47: FCC* Rules and Regulations:

CAUTI ON!

generic emission standard.
Part 1:

Part 1: Residential, commercial and light industry environment".

Part 15: “Radio frequency devices
Subpart B Unintentional radiators”

Servicing the machines can only be done by an authorized Kramer technician. Any user who makes changes or
modifications to the unit without the expressed approval of the manufacturer will void user authority to operate the
equipment.

Use the supplied DC power supply to feed power to the machine.
Please use recommended interconnection cables to connect the machine to other components.
* FCC and CE approved using STP cable (for twisted pair products)

52

KRAMER: SIMPLE CREATIVE TECHNOLOGY

For the latest information on our products and a list of Kramer

distributors, visit our Web site: www.kramerelectronics.com,

where updates to this user manual may be found.

We welcome your questions, comments and feedback.

Safety Warning:

Disconnect the unit from the power supply before
opening/servicing.

Caution



Kramer Electronics, Ltd.

Web site: www.kramerelectronics.com

E-mail: [e-mail]

P/N: 2900–000155 REV 5