Kramer VM-114H4C User manual

Kramer Electronics, Ltd.
USER MANUAL
Model:
VM-114H4C
2 Input 1:4 HDMI DA/4x CAT5 Outputs
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Contents
i
Contents
1Introduction 1
2Getting Started 1
2.1 Recycling Kramer Products 1
2.2 Quick Start 2
3Overview 4
3.1 Using Shielded Twisted Pair Cable 4
3.2 About the Power Connect™ Feature 5
3.3 Recommendations for Best Performance 5
4Defining the VM-114H4C 6
5Using the VM-114H4C 7
5.1 Connecting the VM-114H4C 7
5.2 Acquiring the EDID 8
5.2.1 Disabling/Enabling Deep Color Support 9
5.3 Connecting to the VM-114H4C via RS-232 9
5.4 RS-232, IR Control and Pass-through 10
5.4.1 RS-232 Control and Pass-through Using the VM-114H4C 10
5.4.2 Local IR Control and IR Pass-through Using the VM-114H4C 10
6Wiring the Twisted Pair RJ-45 Connectors 14
7Technical Specifications 15
8Default Communication Parameters 15
9Default EDID 16
10 Kramer Protocol 2000 16
Figures
Figure 1: VM-114H4C Front Panel 6
Figure 2: VM-114H4C Rear Panel 7
Figure 3: Connecting the VM-114H4C 8
Figure 4: VM-114H4C RS-232 Control and Pass-through 10
Figure 5: VM-114H4C IR Control and Pass-through Example One 11
Figure 6: VM-114H4C IR Control and Pass-through Example Two 12
Figure 7: VM-114H4C IR Control and Pass-through Example Three 13
Figure 8: TP Pinout Wiring 14
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Contents
ii
Tables
Table 1: VM-114H4C Front Panel Features 6
Table 2: VM-114H4C Rear Panel Features 7
Table 3: Technical Specifications of the VM-114H4C 15
Table 4: Default Communication Parameters 15
Table 5: Protocol Definitions 16
Table 6: Instruction Codes for Protocol 2000 17
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Introduction
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1
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 groups1that are clearly defined by function.
Congratulations on purchasing your Kramer Desktop VM-114H4C,which is ideal
for:
•Home theater, presentation and multimedia applications
•Rental and staging
The package includes the following items:
•VM-114H4C 2 Input 1:4 HDMI DA/4x CAT5 Outputs
•Power adapter (12V DC)
•Kramer RC-IR3 infrared remote control transmitter (including the required
batteries and a separate user manual2)
•This user manual2
2 Getting Started
We recommend that you:
•Unpack the equipment carefully and save the original box and packaging
materials for possible future shipment
•Review the contents of this user manual
•Use Kramer high performance high resolution cables3
•Do not secure the cables in tight bundles or roll the slack into tight coils
2.1 Recycling Kramer Products
The Waste Electrical and Electronic Equipment (WEEE) Directive 2002/96/EC
aims to reduce the amount of WEEE sent for disposal to landfill or incineration by
requiring it to be collected and recycled. To comply with the WEEE Directive,
Kramer Electronics has made arrangements with the European Advanced
1 GROUP 1: Distribution Amplifiers; GROUP 2: Switchers and Routers; 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 Download up-to-date Kramer user manuals from http://www.kramerelectronics.com
3 The complete list of Kramer cables is available from http://www.kramerelectronics.com
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Getting Started
2
Recycling Network (EARN) and will cover any costs of treatment, recycling and
recovery of waste Kramer Electronics branded equipment on arrival at the EARN
facility. For details of Kramer’s recycling arrangements in your particular country
go to our recycling pages at http://www.kramerelectronics.com/support/recycling/.
2.2 Quick Start
This quick start chart summarizes the basic setup and operation steps of the
VM-114H4C.
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Getting Started
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3
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Overview
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3 Overview
The high quality VM-114H4C is a switcher/distribution amplifier for HDMI and TP
(Twisted Pair) signals. It reclocks and equalizes one of two selectable input signals
and distributes it to four TP outputs.
In particular, the VM-114H4C:
•Supports up to 1.65Gbps bandwidth per graphic channel (DGKat)1
•Can read and store in non-volatile memory the default EDID or the EDID2
block from one or a mix3of the output display devices, so it can then
provide the EDID information to the source even if the display device is not
connected
•Features I-EDIDPro™ Kramer Intelligent EDID Processing™ – Intelligent
EDID handling & processing algorithm ensures Plug and Play operation for
HDMI systems
•Supports 3D Pass-through, Deep Color4, x.v.Color™ and uncompressed
audio channels (Dolby TrueHD, DTS-HD)
•Is HDCP compliant
•Features LEDs indicating the selected input and active output
•Supports IR remote control and has a remote IR 3.5mm mini jack
•Is 12V DC fed and is housed in a Kramer Desktop enclosure
3.1 Using Shielded Twisted Pair Cable
Kramer engineers have developed special twisted pair cables to best match our
digital twisted pair products; the Kramer: BC-DGKat524 (CAT 5 24 AWG), the
Kramer BC-DGKat623 (CAT 6 23 AWG cable), and the Kramer BC-DGKat7a23
(CAT 7a 23 AWG cable). These specially built cables significantly outperform
regular CAT 5/CAT 6 /CAT 7a cables.
The VM-114H4C supports a range of up to 90m (295ft) at 1080i/SXGA or up to
30m (98ft) at 1080p/UXGA on shielded BCP-DGKat524 cable; 90m (295ft) at
1080i or up to 70m (230ft) at 1080p/UXGA on shielded BCP-DGKat623 cable.
You can daisy-chain up to six devices with the maximum overall distance between
the first and last devices being cumulative and limited by the cable type used.
1 Suitable for resolutions up to UXGA at 60Hz and for all HD resolutions
2 EDID is Extended Display Identification Data (see Section 3.4 for a more detailed definition)
3 The EDID acquired is a weighted average of all the connected outputs. For example, if several displays with different resolutions are
connected to the outputs, the acquired EDID supports all the resolutions, as well as other parameters included in the EDID
4 On the HDMI input
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Overview
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5
3.2 About the Power Connect™ Feature
The Power Connect™ feature here means that only the transmitter needs to be
connected to a power source when the devices are within 90m (270ft) of each
other. The Power Connect™ feature applies as long as the cable can carry power
and the distance does not exceed 90m on standard CAT 5 cable. For longer
distances, heavier gauge cable should be used1.
!
Warning: Using a TP cable that is incorrectly wired will
cause permanent damage to the device
3.3 Recommendations for Best Performance
To achieve the best performance:
•Connect only good quality connection cables, thus avoiding interference,
deterioration in signal quality due to poor matching, and elevated noise
levels (often associated with low quality cables)
•Do not secure the cables in tight bundles or roll the slack into tight coils
•Avoid interference from neighboring electrical appliances and position your
VM-114H4C away from moisture, excessive sunlight and dust
1 CAT 5 cable is still suitable for the video/audio transmission, but not for feeding the power at these distances
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Defining the VM-114H4C
6
4 Defining the VM-114H4C
Figure 1 and Table 1 define the front panel the VM-114H4C.
Figure 1: VM-114H4C Front Panel
Table 1: VM-114H4C Front Panel Features
# Feature Function
1 IR Remote Control Sensor Sensor for the remote control IR transmitter
2 IR LED Lights yellow when receiving signals from the IR remote control
transmitter
3 REMOTE IR 3.5mm Mini Jack Connect to a remote infrared sensor
4
EDID Buttons
READ Button Press (when one of the input LEDs is flashing to indicate a
selected input) to read the selected EDID (see Section 5.2)
5 SELECT Button
Press repeatedly to cycle through the inputs to select an input from
which to read the EDID. The relevant LED flashes (see
Section 5.2)
6 OUTPUT 1~4 LEDS The relevant LED lights green when an acceptor is connected to
the output1
7 POWER LED Lights green when the unit receives power
8 INPUT SELECTOR Button Press to select an input. The relevant input LED lights
9 IN1 (HDMI)LED Input
LEDs Lights green when HDMI input 1 is selected
10 IN2 (CAT5)LED Lights green when the TP input 2 is selected
1 Also lights or flashes during EDID setup (see Section 5.2)
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Using the VM-114H4C
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7
Figure 2 and Table 2 define the rear panel VM-114H4C.
Figure 2: VM-114H4C Rear Panel
Table 2: VM-114H4C Rear Panel Features
# Feature Function
11 RS-232 9-pin D-sub (F)
Connector Connect to a PC or remote controller
12 12V DC Power Connector Connect to the +12V DC power adapter, center pin positive
13 IN1 (HDMI) Input
HDMI Connector Inputs
Connect to an HDMI source
14 IN2 (CAT5) Input
RJ-45 Connector Connect to aTP source (for example, PT-571 HDMI Line Transmitter, VM-114H2C or VM-114H4C)
15 OUT 1 TP RJ-45 Output
Connectors
Connect to the TP acceptors (for example, PT-572+ HDMI Line
Receiver, VM-114H or VM-114H4C)
OUT 2
OUT 3
OUT 4
5 Using the VM-114H4C
This section describes how to connect the VM-114H4C (see Section 5.1) and how
to use the EDID SELECT button (see Section 5.2).
5.1 Connecting the VM-114H4C
To connect1the VM-114H4C as illustrated in the example in Figure 3:
1. Connect the HDMI source (for example, a DVD player) to the IN 1 (HDMI)
connector.
2. Connect the TP source (for example, a PT-571 HDMI Line Transmitter2,
another VM-114H2C or a VM-1114H4C) to the IN 2 (CAT5) connector.
1 Switch off the power on each device before connecting it to your VM-114H4C. After connecting your VM-114H4C, switch on its
power and then switch on the power on each device
2 Another example is the TP-573 Twisted Pair Line Transmitter
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Using the VM-114H4C
8
3. Connect the TP RJ-45 outputs to up to four TP acceptors (for example, the
PT-572+ Line Receiver1, the VM-114H or the VM-114H2C).
4. (Optional) Connect the front panel remote IR 3.5mm mini jack to the remote
IR sensor.
5. (Optional) Connect a PC via RS-232 to the RS-232 port on the VM-114H4C
(see Section 5.3).
Figure 3: Connecting the VM-114H4C
5.2 Acquiring the EDID
Each input on the VM-114H4C has a factory default EDID loaded2(see
Section 9). This lets you connect the power before having to connect one of the
acceptors.
You can acquire the EDID3from:
•One output (the relevant output LED flashes)
1 Alternatively the TP-574 Twisted Pair Line Receiver
2 The VM-114H4C reads the EDID, which is stored in the non-volatile memory
3 This is usually done only once, when the machine is being set up in an installation. Once acquired, the EDID is saved in non-volatile
memory and further acquisition is not necessary
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Using the VM-114H4C
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9
•The default EDID (all output LEDs flash)
•Up to four connected outputs using the Auto-mix Mode1(all output LEDs
light)
To acquire the EDID:
1. Connect the output(s) from which you want to acquire the EDID.
2. Press the EDID SELECT button briefly. The last acquired EDID is indicated
by the lit LED (for example, if Output LED 2 is lit, the EDID acquired was
from Output 2).
The device enters the EDID programming mode.
3. Press the EDID SELECT button repeatedly until the required EDID is
indicated based on the patterns described above.
4. Press the EDID READ button.
The relevant LEDs flash in a pattern for a few seconds as follows:
Slowly and then no longer lights. The EDID was successfully read
Quickly and then no longer lights. The EDID was not read and the default
EDID was stored
5.2.1 Disabling/Enabling Deep Color Support
You can disable EDID deep color support to prevent signal deterioration when
using long twisted pair cables on INPUT 2.
To disable deep color and acquire EDID:
1. Disconnect the power.
2. Connect the output or outputs from which you want to acquire the EDID.
3. Connect the power while pressing the EDID READ button.
4. Perform steps 3 through 5 in Section 5.2.
To enable deep color and acquire EDID:
1. Disconnect the power.
2. Connect the output or outputs from which you want to acquire the EDID.
3. Connect the power while pressing the EDID SELECT button.
4. Perform steps 3 through 5 in Section 5.2.
5.3 Connecting to the VM-114H4C via RS-232
You can connect to the VM-114H4C via an RS-232 connection using, for
example, a PC. Note that a null-modem adapter/connection is not required.
1 The EDID acquired is a weighted average of all the connected outputs. For example, if several displays with different resolutions are
connected to the outputs, the acquired EDID supports all the resolutions, as well as other parameters included in the EDID
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Using the VM-114H4C
10
To connect to the VM-114H4C via RS-232:
•Connect the RS-232 9-pin D-sub rear panel port on the product unit via a
9-wire straight cable (only pin 2 to pin 2, pin 3 to pin 3, and pin 5 to pin 5
need to be connected) to the RS-232 9-pin D-sub port on your PC
5.4 RS-232, IR Control and Pass-through
The VM-114H4C can be controlled via RS-232 and infrared. Depending on how
the RS-232 and IR connections are configured dictates whether the device will
respond to control signals or transparently pass them through to another receiver or
transmitter. Three examples in Sections 5.4.2.1, 5.4.2.2 and 5.4.2.3 of various
configurations illustrate this functionality.
5.4.1 RS-232 Control and Pass-through Using the VM-114H4C
As shown in Figure 3, you can connect a PC (or other serial controller) directly to
the VM-114H4C to control the VM-114H4C.
The VM-114H4C also transparently passes bidirectional RS-232 signals over the
CAT 5 cable from the TP-573 transmitter to the TP-574 receiver. For example, a
PC connected to the RS-232 port on the TP-573 can control an RS-232-
controllable device (for example, a projection screen) connected to the TP-574.
Figure 4: VM-114H4C RS-232 Control and Pass-through
5.4.2 Local IR Control and IR Pass-through Using the VM-114H4C
The VM-114H4C provides an IR sensor and a 3.5mm mini jack for connecting a
remote IR emitter or sensor. When the VM-114H4C is connected to suitable
transmitters and receivers (for example, the TP-573 and TP-574), the
VM-114H4C can act as a pass-through for IR control signals, allowing remote
control of multiple devices using multiple IR remote controllers.
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Using the VM-114H4C
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11
When there is no IR sensor or emitter connected to the IR Remote 3.5mm mini
jack, all signals received by the IR sensor on the front panel are passed to the
transmitter and receiver bi-directionally over the CAT 5 cable allowing control of
remote devices.
When an IR sensor or emitter is connected to the IR Remote 3.5mm mini jack, the
connection between the IR sensor on the front panel and the IR on the
transmitter/receiver is broken so that any signal received by the IR sensor on the
front panel remains local to the VM-114H4C and controls only the VM-114H4C.
To control any device you need to use the appropriate IR remote controller, for
example, the Kramer remote controller controls Kramer devices, the LCD remote
controller controls the LCD display and so on, as shown in the following examples.
The following examples illustrate just three of the possible ways of connecting the
VM-114H4C to provide local and remote IR control.
5.4.2.1 IR Local Control and Pass-through Example One
The configuration is shown in Figure 5.
Figure 5: VM-114H4C IR Control and Pass-through Example One
A DVD player is connected to the TP-573 transmitter via an IR emitter.
An LCD display is connected to the TP-574 receiver via an IR emitter.
Both the TP-573 and the TP-574 are connected to the VM-114H4C via TP
cabling.
Point the appropriate remote control for the device at the VM-114H4C IR sensor
to control a device.
5.4.2.2 IR Local Control and Pass-through Example Two
The configuration is shown in Figure 6.
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Using the VM-114H4C
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Figure 6: VM-114H4C IR Control and Pass-through Example Two
An IR sensor is connected to the TP-573 transmitter.
An LCD display is connected to the TP-574 receiver via an IR emitter.
Both the TP-573 and the TP-574 are connected to the VM-114H4C via TP
cabling.
Point the LCD display remote control either at the TP-573 IR sensor or at the
VM-114H4C IR sensor to control the LCD display. Point the Kramer remote
control at the VM-114H4C IR sensor to control the VM-114H4C.
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Using the VM-114H4C
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5.4.2.3 IR Local Control and Pass-through Example Three
The configuration is shown in Figure 7.
Figure 7: VM-114H4C IR Control and Pass-through Example Three
The first DVD player (player 1) is connected to the TP-573 transmitter via an IR
emitter.
The second DVD player (player 2) is connected to the VM-114H4C via an IR
emitter.
An IR sensor is connected to the TP-574 receiver.
Both the TP-573 and the TP-574 are connected to the VM-114H4C via TP
cabling.
To control DVD player 1, point the DVD player 1 IR remote control at the TP-574
IR sensor. To control DVD player 2, point the DVD player 2 IR remote control at
the TP-574 IR sensor. Point the Kramer remote control at the VM-114H4C IR
sensor to control the VM-114H4C.
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Wiring the Twisted Pair RJ-45 Connectors
14
6 Wiring the Twisted Pair RJ-45 Connectors
This section defines the TP pinout, using a straight pin-to-pin cable with RJ-45 connectors.
i
Note, that the cable Ground shielding must be connected/soldered to
the connector shield.
EIA /TIA 568B
Figure 8: TP Pinout Wiring
PIN Wire Color
1 Orange / White
2 Orange
3 Green / White
4 Blue
5 Blue / White
6 Green
7 Brown / White
8 Brown
Pair 1 4 and 5
Pair 2 1 and 2
Pair 3 3 and 6
Pair 4 7 and 8
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Technical Specifications
15
15
7 Technical Specifications
Table 3 lists the technical specifications1of the VM-114H4C.
Table 3: Technical Specifications of the VM-114H4C
INPUTS: 1 HDMI Connector
1 TP on an RJ-45 Connector
OUTPUTS: 4 TP on RJ-45 Connectors
BANDWIDTH: Supports up to 1.65Gbps bandwidth per graphic channel (DGKat)
COMPLIANCE WITH
HDMI STANDARD: Supports HDMI and HDCP
CONTROLS: Input select button, EDID select button, panel lock button, RS-232, local and
remote IR controls
INDICATOR LEDs: IR communication, Power, IN 1 HDMI, IN 2 CAT5, OUTPUT 1, 2, 3 and 4
POWER
CONSUMPTION: 12V DC, 2A
OPERATING
TEMPERATURE: 0° to +40°C (32° to 104°F)
STORAGE
TEMPERATURE: –40° to +70°C (–40° to 158°F)
HUMIDITY: 10% to 90%, RHL non-condensing
DIMENSIONS: 21.5cm x 16.3cm x 4.4cm (8.5in x 6.4in x 1.7in) W, D, H
WEIGHT: 0.9kg (1.98lbs) approx.
ACCESSORIES: Power supply, RC-IR3 infrared remote control transmitter
OPTIONS: HDMI/HDMI male to male cables, RK-1 19” rack adapter
8 Default Communication Parameters
Table 4 lists the default communication parameters for the VM-114H4C.
Table 4: Default Communication Parameters
RS-232
Protocol 2000
Baud Rate: 9600
Data Bits: 8
Stop Bits: 1
Parity: None
Command Format: HEX
Example (Output 1 to Input 1): 0x01, 0x81, 0x81, 0x81
1 Specifications are subject to change without notice
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Default EDID
16
9 Default EDID
The factory default EDID is listed below.
Monitor
Model name............... VM114H4C
Manufacturer............. KRM
Plug and Play ID......... KRM0114
Serial number............ 505-707455010
Manufacture date......... 2009, ISO week 10
-------------------------
EDID revision............ 1.3
Input signal type........ Digital
Color bit depth.......... Undefined
Display type............. RGB color
Screen size.............. 520 x 320 mm (24.0 in)
Power management......... Standby, Suspend, Active off/sleep
Extension blocs.......... 1 (CEA-EXT)
-------------------------
DDC/CI................... n/a
Color characteristics
Default color space...... Non-sRGB
Display gamma............ 2.20
Red chromaticity......... Rx 0.674 - Ry 0.319
Green chromaticity....... Gx 0.188 - Gy 0.706
Blue chromaticity........ Bx 0.148 - By 0.064
White point (default).... Wx 0.313 - Wy 0.329
Additional descriptors... None
Timing characteristics
Horizontal scan range.... 30-83kHz
Vertical scan range...... 56-76Hz
Video bandwidth.......... 170MHz
CVT standard............. Not supported
GTF standard............. Not supported
Additional descriptors... None
Preferred timing......... Yes
Native/preferred timing.. 1280x720p at 60Hz (16:10)
Modeline............... "1280x720" 74.250 1280 1390 1430 1650 720 725 730 750 +hsync +vsync
Standard timings supported
720 x 400p at 70Hz - IBM VGA
640 x 480p at 60Hz - IBM VGA
640 x 480p at 75Hz - VESA
800 x 600p at 60Hz - VESA
800 x 600p at 75Hz - VESA
1024 x 768p at 60Hz - VESA
1024 x 768p at 75Hz - VESA
1280 x 1024p at 75Hz - VESA
1280 x 1024p at 60Hz - VESA STD
1600 x 1200p at 60Hz - VESA STD
1152 x 864p at 75Hz - VESA ST
10 Kramer Protocol 2000
This RS-232 communication protocol uses four bytes of information as defined
below. The default data rate is 9600 baud, with no parity, 8 data bits and 1 stop bit.
Table 5: Protocol Definitions
MSB LSB
DESTI-
NATION INSTRUCTION
0
D
N5
N4
N3
N2
N1
N0
7 6 5 4 3 2 1 0
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Kramer Protocol 2000
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1st byte
INPUT
1
I6
I5
I4
I3
I2
I1
I0
7 6 5 4 3 2 1 0
2nd byte
OUTPUT
1
O6
O5
O4
O3
O2
O1
O0
7 6 5 4 3 2 1 0
3rd byte
MACHINE NUMBER
1
OVR
X
M4
M3
M2
M1
M0
7
6
5
4
3
2
1
0
4th byte
1st BYTE: Bit 7 – Defined as 0.
D – “DESTINATION”: 0 - for sending information to the switchers (from the PC);
1 - for sending to the PC (from the switcher).
N5…N0 – “INSTRUCTION”
The function that is to be performed by the switcher(s) is defined by the INSTRUCTION (6 bits). 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.
I6…I0 – “INPUT”.
When switching (ie. instruction codes 1 and 2), the INPUT (7 bits) is set as the input number which is to be switched. Similarly, if
switching is done via the machine’s front-panel, then these bits are set with the INPUT NUMBER which was switched. For other
operations, these bits are defined according to the table.
3rd BYTE: Bit 7 – Defined as 1.
O6…O0 – “OUTPUT”.
When switching (ie. instruction codes 1 and 2), the OUTPUT (7 bits) is set as the output number which is to be switched. Similarly, if
switching is done via the machine’s front-panel, then these bits are set with the OUTPUT NUMBER which was switched. For other
operations, these bits are defined according to the table.
4th BYTE: Bit 7 – Defined as 1.
Bit 5 – Don’t care.
OVR – Machine number override.
M4…M0 – MACHINE NUMBER.
Used to address machines in a system via their machine numbers. When several machines are controlled from a single serial port, they
are usually configured together with each machine having an individual machine number. If the OVR bit is set, then all machine
numbers will accept (implement) the command, and the addressed machine will reply.
For a single machine controlled via the serial port, always set M4…M0 = 1, and make sure that the machine itself is configured as
MACHINE NUMBER = 1. Table 6: Instruction Codes for Protocol 2000
Note: All values in the table are decimal, unless otherwise stated.
INSTRUCTION DEFINITION FOR SPECIFIC INSTRUCTION NOTE
# DESCRIPTION INPUT OUTPUT
1 SWITCH VIDEO Set equal to video input
which is to be switched
(0 = disconnect)
Set equal to video output which is
to be switched
(0 = to all the outputs)
2
61
IDENTIFY MACHINE
1 - video machine name
3 - video software version
9 - protocol 2000 version
0 - Request first 4 digits
1 - Request first suffix
2 - Request second suffix
3 - Request third suffix
10 - Request first prefix
11 - Request second prefix
12 - Request third prefix
13
im Vertrieb von
CAMBOARD Electronics
www.camboard.de
Tel. [phone]
Fax [phone]
[email protected]