Kramer Electronics, Ltd.
USER MANUAL
Model:
VP-23xl
4x1 Presentation Switcher
Contents
Contents
1
2
3
4
4.1
Introduction
Getting Started
Overview
Your Presentation Switcher
Connecting the VP-23xl
1
1
1
2
5
4.1.1
4.1.2
4.1.3
Connecting a PC
Dipswitch Settings
Connecting a Projector to the VP-23xl
6
7
8
5
5.1
5.2
6
6.1
6.2
7
8
9
Understanding Your Switcher
The Front Panel Buttons
The Front Panel Control Level Knobs
Operating Your Switcher
Switching
Connecting the Master Audio Output
Technical Specifications
Hex Table
Communication Protocol
9
9
9
10
10
11
12
13
13
Figures
Figure 1: VP-23xl 4x1 Presentation Switcher
Figure 2: Connecting a PC without using a Null-modem Adapter
Figure 3: RS-232 Connections
Figure 4: VP-23xl 4x1 Presentation Switcher Connections
Figure 5: Switching an Input to an Output
Figure 6: Generating a Master Audio Output
3
6
7
8
10
12
Tables
Table 1: Front Panel VP-23xl Presentation Switcher Features
Table 2: Rear Panel VP-23xl Presentation Switcher Features
Table 3: Dipswitch Settings
Table 4: Technical Specifications of the VP-23xl Presentation Switcher
Table 5: VP-23xl Hex Table
Table 6: Protocol Definitions
Table 7: Instruction Codes
4
4
7
12
13
13
14
i
Introduction
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-23xl 4x1 Presentation
Switcher. This product is ideal for the following typical applications:
Presentation and conference room systems
Production studios, rental and staging
The package includes the following items:
VP-23xl 4x1 Presentation Switcher
Power cord
Windows®-based Kramer control software
Null-modem adapter
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
3
Overview
The VP-23xl is a high quality presentation switcher designed for a wide
variety of presentation and multimedia applications. The VP-23xl is a
one-box solution for installations that would otherwise require several
separate products and is designed so that each section is controllable
independently from the other sections.
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 our Web site at http://www.kramerelectronics.com
1
Your Presentation Switcher
In addition the VP-23xl:
Includes 16 selector buttons and front panel adjustments of VGA / XGA
output level and EQ., master audio output level and microphone level
Recalls previous setup via the non-volatile memory
Is controllable via the front panel buttons or by RS-232 serial commands
transmitted by a touch screen system, PC, or other serial controller
Includes an additional audio switching section that routes one of the
pre-selected audio inputs from the other switching sections to a separate
output
Supports changing the master audio output levels via RS-232 commands
Combines the functions of a 4x1 switcher for composite video and audio,
a 4x1 switcher for s-Video and audio, and a 4x1 switcher for VGA/XGA
type signals with audio
Allows microphone switching or talk-over
Includes a built-in IR (Infra-Red) Receiver
Achieving the best performance means:
Connecting 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)
Avoiding interference from neighboring electrical appliances that may
adversely influence signal quality
Positioning your Kramer VP-23xl in a location free from moisture and
away from excessive sunlight and dust
4
Your Presentation Switcher
Figure 1 illustrates the front and rear panels of the VP-23xl. Tables 1 and 2
define the front and rear panels of the VP-23xl, respectively.
2
KRAMER: SIMPLE CREATIVE TECHNOLOGY
Your Presentation Switcher
Video (CV)-Audio Selector
1
2
3
s-Video (Y/C)-Audio Selector
4
1
2
3
VGA/XGA-Audio Selector
4
1
2
3
Master Audio Selector
4
CV
VGA/XGA LEVEL
s-Video
Mic
AUDIO LEVEL
MIC LEVEL
TALK
OVER
IN 1
Con
Dyn
IN 2
IN 3
IN 4
IN 1
OUT
IN 2
IN 3
IN 4
OUT
IN 1
IN 2
+G-
+G- +G-
IN 3
IN 4
OUT
Right
+G- +G-
+G - +G-
+G- +G-
+G - +G -
+G-
Left
Mic IN
IN 1
Setup
Right
+G- +G-
+G Left
Audio (Composite Video)
Composite Video
IN 2
IN 3
IN 4
OUT
IN 1
IN 2
Audio (s-Video)
s-Video
IN 3
IN 4
OUT
IN 1
Audio (VGA/XGA)
IN 2
VGA/XGA
IN 3
RS-232 Serial:
230 VAC
50/60 Hz
Master Audio
Out
IN 4
OUT
FUSE
Figure 1: VP-23xl 4x1 Presentation Switcher
3
Your Presentation Switcher
Table 1: Front Panel VP-23xl Presentation Switcher Features
#
1
2
3
4
5
6
7
8
9
10
11
12
13
Feature
IR (Infra-Red) Receiver
Power Switch
Video (CV)-Audio Selector Buttons
s-Video (Y/C)-Audio-Selector Buttons
VGA/XGA-Audio-Selector Buttons
s-Video Button
CV Button
Mic Button
VGA/XGA Button
Mic Level Knob
TALK OVER Button
AUDIO LEVEL Knob
VGA/XGA Level Knob
Function
Signals from the remote control transmitter illuminate the LED
Illuminated switch supplying power to the unit
Selects the composite video / audio source from 1 to 4
Selects the s-Video / audio source from 1 to 4
Selects the VGA/XGA video / audio source from 1 to 4
Master Audio Selector button for s-Video
Master Audio Selector button for composite video
Master Audio Selector button for microphone
Master Audio Selector button for VGA/XGA
Adjusts the microphone level
Pushing in button activates talk over
Adjusts the audio level
Adjusts the VGA/XGA level
Table 2: Rear Panel VP-23xl Presentation Switcher Features
#
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
4
Feature
Function
Connects to the microphone
Pushing in selects a dynamic microphone, pushing
out selects a condenser
Audio (Composite Video) IN Terminal Block Connects the balanced audio sources from 1 to 4 (for
Connectors
the composite video)
Audio (Composite Video) OUT Terminal
Connects the balanced audio acceptor (for the
Block Connector
composite video)
Audio (s-Video) IN Terminal Block Connectors Connects the balanced audio sources from 1 to 4 (for
the s-Video)
Audio (s-Video) OUT Terminal Block Connector Connects the balanced audio acceptor (for the s-Video)
Audio (VGA/XGA) IN Terminal Block
Connects the balanced audio sources from 1 to 4 (for
Connectors
the VGA/XGA video)
Audio (VGA/XGA) OUT Terminal Block
Connects the VGA/XGA balanced audio acceptor (for
Connector
the VGA/XGA video)
Master Audio Out Terminal Block Connector
Connects the routed balanced audio channel
Setup
Dipswitches for setup (refer to section 4.1.2)
RS-232 Connector
DB 9F connector connects to PC or Serial Controller
Power Connector with Fuse
AC connector enabling power supply to the unit
VGA/XGA OUT HD15 Connector
Connects to the VGA/XGA video acceptor
VGA/XGA IN HD15 Connectors
Connects the VGA/XGA video sources from 1 to 4
s-Video OUT 4p Connector
Connects to the s-Video acceptor
s-Video IN 4p Connectors
Connects the s-Video sources from 1 to 4
Composite Video OUT BNC Connector
Connects to the composite video acceptor
Composite Video IN BNC Connectors
Connects the composite video sources from 1 to 4
Mic IN Connector
Con / Dyn Switch
KRAMER: SIMPLE CREATIVE TECHNOLOGY
Your Presentation Switcher
4.1 Connecting the VP-23xl
To connect the VP-23xl, connect as follows1 to the rear panel2:
1.
The required Composite, s-Video and VGA/XGA video sources and
acceptors as well as the appropriate balanced audio sources and acceptors.
2.
A dynamic microphone or a condenser3, if required.
3.
The power cord.
4
Note: Set each of the 3 front panel control level knobs to their mid position.
In addition, you can choose to connect the following options:
1.
A PC via the null-modem adapter (when using the Kramer Control
software or other controller).
2.
An audio amplifier to the Master Audio Out connector5.
1 Switch OFF the power on each device before connecting it to your VP-23xl. After connecting your VP-23xl, switch on its
power and then switch on the power on each device. Switching on the VP-23xl, recalls the previous setup from the nonvolatile memory
2 You do not need to connect all inputs
3 Use the Con / Dyn switch (refer to the rear panel, item 2 in Figure 1) to select a dynamic microphone or a condenser
4 MIC Level, Audio Level and VGA/XGA Level
5 As in scenario B in Figure 4
5
Your Presentation Switcher
4.1.1
Connecting a PC
You can connect a PC (or other controller) to the VP-23xl via the RS-232
port.
To connect using the Null-modem adapter provided with the machine
(recommended method):
Connect the RS-232 DB9 rear panel port on the VP-23xl 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 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-23xl, as Figure 2 illustrates (depending on whether the PC
has a 9-pin or 25-pin connector)
Figure 2: Connecting a PC without using a Null-modem Adapter
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KRAMER: SIMPLE CREATIVE TECHNOLOGY
Your Presentation Switcher
4.1.2
Dipswitch Settings
You can connect up to 16 VP-23xl units to the PC via the Null-modem
adapter, and the RS-232 ports as Figure 3 illustrates. Adjust the dipswitches
on the other units according to the information in Table 3:
Table 3: Dipswitch Settings
Machine
#
1
Self Address
Null-modem Adapter
Connects to PC RS-232 In Port
Dipswitch
3
2
1
0
1
2
3
2
0
0
0
0
0
0
0
1
ON
ON
ON
ON
ON
ON
3
0
0
1
0
ON
ON
OFF ON
4
0
0
1
1
ON
ON
OFF OFF
5
0
1
0
0
ON
OFF ON
ON
6
0
1
0
1
ON
OFF ON
OFF
7
0
1
1
0
ON
OFF OFF ON
8
0
1
1
1
ON
OFF OFF OFF
9
1
0
0
0
OFF ON
ON
ON
10
1
0
0
1
OFF ON
ON
OFF
11
1
0
1
0
OFF ON
OFF ON
12
1
0
1
1
OFF ON
OFF OFF
13
1
1
0
0
OFF OFF ON
ON
14
1
1
0
1
OFF OFF ON
OFF
15
1
1
1
0
OFF OFF OFF ON
16
1
1
1
1
OFF OFF OFF OFF
Master
4
ON
OFF
RS-232
RS-232
RS-232
Figure 3: RS-232 Connections
7
Your Presentation Switcher
4.1.3
Connecting a Projector to the VP-23xl
To connect a projector, as scenario B in Figure 4 illustrates, connect:
1.
The Composite Video OUT, the s-Video OUT and the VGA/XGA OUT
connectors to the respective video inputs on the projector.
2.
The Master Audio Out connector to the balanced audio input on the audio
amplifier. Select any one of the 12 audio inputs to route to the Master
Audio Out.
IN 1
Con
Dyn
IN 2
IN 3
IN 4
OUT
IN 1
IN 2
IN 3
IN 4
OUT
IN 1
+G -
+G- +G -
IN 2
IN 3
IN 4
OUT
Right
+G- +G -
+G- +G-
+G - +G -
+G - +G -
+G-
Left
Composite Video
IN 2
IN 3
IN 4
IN 1
Con
Dyn
OUT
IN 2
IN 3
IN 1
IN 2
IN 4
OUT
Audio (s-Video)
s-Video
IN 3
IN 4
IN 1
IN 2
Audio (VGA/XGA)
IN 1
OUT
IN 3
IN 4
VGA/XGA
IN 3
IN 2
OUT
IN 1
+ G-
+G - +G -
IN 2
IN 3
IN 4
RS-232
OUT
OUT
Right
+G - +G -
+G- +G -
+G- +G-
+G - + G-
+G-
Left
IN 1
Setup
Master Audio
Out
IN 4
Right
+ G- +G-
Mic IN
RS-232
+GLeft
Audio (Composite Video)
Mic IN
IN 1
Setup
Right
+G - +G-
+GLeft
Audio (Composite Video)
Composite Video
IN 2
IN 3
IN 4
OUT
IN 1
IN 2
Audio (s-Video)
s-Video
IN 3
IN 4
OUT
IN 1
Audio (VGA/XGA)
IN 2
VGA/XGA
IN 3
Master Audio
Out
IN 4
OUT
Amplifier
Figure 4: VP-23xl 4x1 Presentation Switcher Connections
8
KRAMER: SIMPLE CREATIVE TECHNOLOGY
Understanding Your Switcher
5
Understanding Your Switcher
You can operate your VP-23xl via:
The buttons and the control level knobs on the front panel, as sections 5.1
and 5.2 describe, respectively
RS-232 serial commands transmitted by a touch screen system, PC1, or
other serial controller
5.1 The Front Panel Buttons
The front panel buttons include the following:
Video (CV)-Audio Selector buttons (1 to 4)
s-Video (Y/C)-Audio Selector buttons (1 to 4)
VGA/XGA-Audio Selector buttons (1 to 4)
Master Audio Selector buttons (CV, s-Video, VGA/XGA and Mic)
TALK OVER button2
5.2 The Front Panel Control Level Knobs
The adjustable front panel control level knobs3 include:
Mic Level that adjusts the microphone level at the Master Audio Out
connector and the talk-over function threshold4
Audio Level that adjusts the overall balanced audio output level at the
Master Audio Out connector, without influencing any other audio output
VGA/XGA Level that adjusts a VGA/XGA image, for example, for images
which are dim or lacking in sufficient detail, perhaps due to the use of
long cables5
1 For instructions on using the Windows®-based Control Software, refer to the separate user manual (included on the CDROM in .pdf format), Kramer Control Software
2 With the TALK OVER button pressed in, 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
3 You can also adjust the AUDIO LEVEL on the VP-23xl using the Kramer Control Software
4 Achieving optimum results for a particular environment when using a microphone may require experimentation in adjusting
the AUDIO and MIC LEVELS
5 We recommend using a Line Amplifier when connecting long cables
9
Operating Your Switcher
6
Operating Your Switcher
Section 6.1 describes switching, and section 6.2 describes how to connect the
Master Audio Output.
6.1 Switching
You can switch one of the 4 CV inputs, one of the 4 Y/C inputs and one of the
4 VGA/XGA inputs to the corresponding CV, Y/C or VGA/XGA outputs,
respectively.
To switch an input to an output:
Press one1 button from the set of 4 buttons in the Video (CV)-Audio
section and/or2 one button from the set of 4 buttons in the s-Video
(Y/C)-Audio section and/or one button from the set of 4 buttons in the
VGA/XGA-Audio section
Each pressed button illuminates3, indicating selection and outputting of
that video and audio source
Figure 5 illustrates how to switch s-Video input 3:
s-Video (Y/C)-Audio Selector
1
2
3
4
Pressing this button switches the s-Video (Y/C)-Audio input 3 to
the s-Video (Y/C)-Audio OUT connectors. The button illuminates
IN 3
OUT
+G -
+G -
Audio (s-Video)
s-Video
IN 3
s-Video (Y/C)-Audio
Source
OUT
s-Video (Y/C)Audio Acceptor
Figure 5: Switching an Input to an Output
1 You cannot select more than one button in a section
2 You can overlook a section and choose not to select a button from it
3 Pressing an illuminated button for more than 2 seconds will disconnect the output and the button will no longer illuminate
10
KRAMER: SIMPLE CREATIVE TECHNOLOGY
Operating Your Switcher
6.2 Connecting the Master Audio Output
By default1, stereo audio signals switch together with the video, that is, the
unit is set in audio-follow-video2 (AFV) mode. Change to breakaway mode3,
via RS-232.
You can generate a master audio output (pre-selected from a switching
section) at the Master Audio Out connector.
To generate a master audio output:
Press one of the first 3 buttons (CV, s-Video or VGA/XGA) from the
Master Audio Selector section (if one is not already selected)
The button illuminates, indicating selection and routes the audio channel
of the selected source (CV, s-Video or VGA/XGA) to the Master Audio
Out connector as well as to the appropriate Audio OUT connector
Pressing the illuminating Master Audio Selector button for more than 2
seconds disconnects that Master Audio output, and the button no longer
illuminates. The broadcast will continue to display but without sound.
Pressing the Mic Master Audio Selector button, while the selected Master
Audio Selector button illuminates, will disconnect the illuminated Master
Audio Selector button. The broadcast will continue to display with the sound
of the microphone only.
Figure 6 illustrates how to route the audio channel of VGA/XGA-Audio input
4 to generate an additional VGA/XGA audio channel at the Master Audio Out
connector.
1 That is, the pre-installed factory default
2 In which all operations relate to both the video and the audio channels
3 In which video and audio channels switch independently
11
Technical Specifications
VGA/XGA-Audio Selector
1
2
3
Master Audio Selector
4
CV
Pressing this button illuminates it and
switches the VGA/XGA-Audio input 4
to the VGA/XGA OUT and the Audio
(VGA/XGA) OUT connectors
s-Video
Mic
Pressing this button illuminates it and routes
the audio channel of VGA/XGA-Audio input 4
to the Master Audio Out connector as well as
to the Audio (VGA/XGA) OUT connector
IN 4
OUT
+G -
+G -
Right
+G Left
Audio (VGA/XGA)
VGA/XGA
Master Audio
Out
IN 4
OUT
VGA/XGA-Audio Source
VGA/XGA-Audio Acceptor
Additional Audio Channel
Figure 6: Generating a Master Audio Output
7
Technical Specifications
Table 4 includes the technical specifications:
Table 4: Technical Specifications of the VP-23xl Presentation Switcher
Inputs:
4 VGA / XGA on HD15F connectors, 4 s-Video, 1 Vpp (Y), 0.3Vpp (C) / 75 on 4 pin connectors, 4
composite video 1Vpp / 75 on BNCs
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
Outputs:
1 x VGA / XGA, 1 s-Video - 1 Vpp (Y), 0.3Vpp (C), / 75 on 4 pin connector, 1 composite video 1
Vpp / 75 on a BNC
Each output is accompanied by the appropriate balanced stereo-audio channel: +4dBm / 150 , 1
master audio +4dBm / 150
Bandwidth:
XGA / VGA: 315 MHz; s-Video (Y): 260 MHz; composite video: 470 MHz; audio: 40kHz
S/N Ratio:
Video: 75 dB all channels; audio: 75 dB / 1 Vpp all channels
Diff. Gain:
<0.07% all channels
Diff. Phase:
<0.05 Deg. all channels
Control:
17 selector buttons; VGA/XGA level: up to 4 dB gain; audio: up to 6 dB gain, Mic: up to 49 dB gain
Max Output:
Video: 2.1 Vpp; audio: 27 Vpp
Dimensions:
19-inch (W), 7-inch (D) 2U (H) rack-mountable
Power Source: 230 VAC, 50/60 Hz, (115VAC, U.S.A.) 16VA
Weight:
3.8 kg (8.4 lbs.) approx
Accessories:
Power cord, PC control software
12
KRAMER: SIMPLE CREATIVE TECHNOLOGY
Hex Table
8
Hex Table
Table 5 lists the Hex values (which the protocol in section 9 describes in
more detail) for the VP-23xl 4x1 Presentation Switcher:
Table 5: VP-23xl Hex Table
Inputs
Composite Video OUT and
Audio OUT CV
#
In 1
In 2
In 3
In 4
In 1
In 2
In 3
In 4
In 1
In 2
In 3
In 4
VGA
s-Video
Composite
Video
Group
s-Video OUT and Audio
OUT s-Video
01 81 81 81
01 82 81 81
01 83 81 81
01 84 81 81
01 81 82 81
01 82 82 81
01 83 82 81
01 84 82 81
01 81 83 81
01 82 83 81
01 83 83 81
01 84 83 81
Master Audio Selector (Group Audio OUT)
Composite Video Audio OUT
s-Video Audio OUT
VGA Audio OUT
Microphone
Disconnect All
9
VGA OUT and Audio OUT
VGA
Audio Master OUT
02 81 81 81
02 82 81 81
02 83 81 81
02 84 81 81
02 80 81 81
Communication Protocol
This protocol, which enables RS-232 communication between the VP-23xl
and the PC, uses 4 bytes of information, and data is at 9600 baud, no parity, 8
data bits and 1 stop bit.
Table 6: Protocol Definitions
MSB
LSB
INSTRUCTION
DESTINATION
0
7
D
6
N5
5
N4
4
N3
3
N2
2
1
7
0
6
0
5
0
4
0
3
I2
2
I1
1
0
6
0
5
0
4
0
3
0
2
O1
1
0
6
0
5
0
4
M3
3
1st byte
N1
1
N0
0
INPUT
I0
0
2nd byte
OUTPUT
1
7
O0
0
3rd byte
MACHINE NUMBER
1
7
M2
2
M1
1
M0
0
4th byte
13
Communication Protocol
1st BYTE:
Bit 7 – Defined as 0.
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”.
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 7.
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 7.
4th BYTE:
Bit 7 – Defined as 1.
Bits 3-6 Defined as 0.
M3… M0 – “MACHINE NUMBER”.
MACHINE NUMBER = (DIPSWITCH CODE) + 1.
Table 7: Instruction Codes
#
INSTRUCTION
DESCRIPTION
0
1
RESET MACHINE
SWITCH GROUPS
2
SWITCH AUDIO OUTPUTS
5
REQUEST GROUP STATUS
6
REQUEST STATUS OF
MASTER AUDIO OUTPUT
BREAKAWAY SETTING
8
11
16
18
22
REQUEST BREAKAWAY
SETTING
ERROR
25
RESET MACHINE
SET AUDIO GAIN OF MASTER
AUDIO OUTPUT
INCREASE/DECREASE AUDIO
GAIN
REQUEST GAIN
30
LOCK FRONT PANEL
31
57
REQUEST WHETHER PANEL
IS LOCKED
SET AUTO SAVE
61
IDENTIFY MACHINE
62
DEFINE MACHINE
24
* # 4 - for microphone
NOTES on to Table 7:
DEFINITION FOR SPECIFIC INSTRUCTION
INPUT
OUTPUT
0
1-4 Set equal to video and
audio inputs to be switched for
the relative group
1-4 * Set equal to audio output
to be switched to Master Audio
out
0
0
0
0
Don’t care
0
1
1
1
0 – Panel unlocked
1 – Panel locked
0
1 – Autosave
2 – No save
1 or 2 – Machine name
3 or 4 – Program version
1 – Number of inputs
2 – Number of outputs
NOTE
0
1-3 Set equal to group to which
output is to be switched
1
2
1
2
1-3 Set equal to the group of
which status is required
1
3
0 – Audio-follow-video
1 – Audio breakaway
0
3
0 – Invalid instruction
1 – Out of range
0
gain value
1
7
0 – Increase gain
1 – Decrease gain
0 – Video gain
1 – Audio gain
0
0
3
2
4
8
3, 9
3
Don’t care
5
Don’t care
6
1 – For video
2 – For audio
3
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”
14
KRAMER: SIMPLE CREATIVE TECHNOLOGY
Communication Protocol
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).
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
Gain Value = 0
Mute
Vout = Vin
Gain Value = 115
Gain Value = 127
Vout
=
2Vin
NOTE 8
One step = 0. 5 dB
NOTE 9
Answer = Current Audio Gain (0 –127)
15
LIMITED WARRANTY
Kramer Electronics (hereafter Kramer) warrants this product free from defects in material and workmanship under the
following terms.
HOW LONG IS THE WARRANTY
Labor and parts are warranted for three years from the date of the first customer purchase.
WHO IS PROTECTED?
Only the first purchase customer may enforce this warranty.
WHAT IS COVERED AND WHAT IS NOT COVERED
Except as below, this warranty covers all defects in material or workmanship in this product. The following are not covered
by the warranty:
1.
2.
3.
Any product which is not distributed by Kramer, or which is not purchased from an authorized Kramer dealer. If you are
uncertain as to whether a dealer is authorized, please contact Kramer at one of the agents listed in the Web site
www.kramerelectronics.com.
Any product, on which the serial number has been defaced, modified or removed.
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 FOR AND WHAT WE WILL NOT PAY FOR
We will pay labor and material expenses for covered items. We will not pay for the following:
1.
2.
3.
Removal or installations charges.
Costs of initial technical adjustments (set-up), including adjustment of user controls or programming. These costs are the
responsibility of the Kramer dealer from whom the product was purchased.
Shipping charges.
HOW YOU CAN GET WARRANTY SERVICE
1.
2.
3.
To obtain service on you product, you must take or ship it prepaid to any authorized Kramer service center.
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).
For the name of the nearest Kramer authorized service center, consult your authorized dealer.
LIMITATION OF IMPLIED WARRANTIES
All implied warranties, including warranties of merchantability and fitness for a particular purpose, are limited in duration to
the length of this warranty.
EXCLUSION OF DAMAGES
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.
2.
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:
Any other damages, whether incidental, consequential or otherwise. Some countries may not allow limitations on how long an
implied warranty lasts and/or do not allow the exclusion or limitation of incidental or consequential damages, so the above
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.
NOTE: All products returned to Kramer for service must have prior approval. This may be obtained from your dealer.
This equipment has been tested to determine compliance with the requirements of:
EN-50081:
"Electromagnetic compatibility (EMC);
generic emission standard.
Part 1: Residential, commercial and light industry"
EN-50082:
"Electromagnetic compatibility (EMC) generic immunity standard.
Part 1: Residential, commercial and light industry environment".
CFR-47:
FCC Rules and Regulations:
Part 15: “Radio frequency devices
Subpart B – Unintentional radiators”
CAUTION!
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.
16
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.
Kramer Electronics, Ltd.
Web site: www.kramerelectronics.com
E-mail: info@kramerel.com
P/N: 2900–002062 REV 2