Kramer Electronics VP-81 K user manual Msb Lsb, Input, Output, Machine Number

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11.3Kramer Protocol 2000

This RS-232/RS-485/Ethernet communication protocol (Version 0.5) uses four bytes of information as defined below. For RS-232, a null-modem connection between the machine and controller is used. The default data rate is 9600 baud, with no parity, 8 data bits and 1 stop bit.

 

Table 1: Protocol Definitions

 

 

 

 

 

 

 

 

MSB

 

 

 

 

 

 

 

 

 

 

 

 

LSB

1st byte

Destination

 

 

 

 

 

Instruction

 

 

 

 

0

D

 

 

N5

 

N4

 

N3

 

N2

 

N1

N0

7

6

 

 

5

 

4

 

3

 

2

 

1

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2d byte

 

 

 

 

 

 

 

INPUT

 

 

 

 

1

I6

 

 

I5

 

I4

 

I3

 

I2

 

I1

I0

7

6

 

 

5

 

4

 

3

 

2

 

1

0

 

 

 

 

 

 

 

 

 

 

 

 

3d byte

 

 

 

 

 

 

OUTPUT

 

 

 

 

1

O6

 

 

O5

 

O4

 

O3

 

O2

 

O1

O0

7

6

 

 

5

 

4

 

3

 

2

 

1

0

4th byte

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MACHINE NUMBER

 

 

1

OVR

 

 

X

 

M4

 

M3

 

M2

 

M1

M0

7

6

 

 

5

 

4

 

3

 

2

 

1

0

 

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.

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VP-81K - Kramer Protocol

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Contents VP-81K Page Figures Introduction Achieving the Best Performance Getting StartedOverview Defining the VP-81K 8x1 UXGA/Audio Switcher DDC SupportDefining Edid Audio Gain PROG. Button Using the IR Transmitter Before Installing in a Rack Installing in a RackConnecting the VP-81K Connecting the VP-81K Connecting the Balanced/Unbalanced Stereo Audio OutputCrossed Cable RS-232 Connection Controlling via RS-232Controlling the VP-81K via the Ethernet Port Connecting a PC or Controller to the RS-485 PortRight-click Local Area Connection Properties Configuring the Ethernet Port Connecting via a Straight-Through CableClick OK P3K Wizard screen appears Controlling via the Embedded Web PagesClick the on-screen buttons to control the unit Click Configurations DIP-Switch Settings Setting the Machine #Cascading Machines Control Configuration via RS-232 and RS-485 Operating Your VP-81K 8x1 UXGA/Audio Switcher Using the Front Panel Input Selector ButtonsUsing the Regular or Automatic Switching Mode Using the Audio-Follow-Video/Breakaway Modes Regular Switching ModeAutomatic Switching Mode Operating in the Audio-Follow-Video Mode Setting the Audio GainOperating in Breakaway Mode Toggling between Video and Audio Control in Breakaway ModeInputs Technical SpecificationsRS-232 Communication ParametersTable of Ascii Codes for Serial Communication Protocol Table of Hex Codes for Serial Communication Protocol 16 81 80 36dB 16 81 C8 0dB 16 81 D4 +6dB Kramer Protocol Switching ProtocolsSwitching Protocols via the Front Panel Buttons Switching Protocols via Protocol CommandsProtocol 3000 Syntax Kramer Protocol#CR ~OK Crlf Command Part DetailsAUD? AUDVID? VIDPRST-STO SIGNAL?Signal Input PresetLOCK-MODE Reset Reset OKLOCK-FP LOCK-FP?NAME? Name SN?VERSION? Version NameAFV? AFVMachine Number MSB LSBInput OutputReset Video Switch Video VP-81K Kramer Protocol VP-81K Kramer Protocol Only the first purchase customer may enforce this warranty Safety Warning

VP-81 K specifications

Kramer Electronics has established itself as a leading provider of innovative audio-visual solutions, and the VP-81 K is a noteworthy addition to their product lineup. This versatile presentation switcher is designed to accommodate a variety of audiovisual applications, making it ideal for classrooms, conference rooms, and professional events.

One of the standout features of the VP-81 K is its ability to handle multiple video formats. It supports both analog and digital inputs, including HDMI, VGA, and Composite video. This flexibility allows users to connect a wide range of devices, from laptops and projectors to higher-end sources and displays. The device seamlessly switches between input sources, ensuring a smooth presentation experience without interruption.

Another important characteristic of the VP-81 K is its built-in scaling technology. The device is equipped with a high-quality scaler that ensures output resolutions are optimized for a range of display formats. This means that regardless of the source resolution, the image quality remains crisp and clear, providing optimal viewing experiences for audiences.

The VP-81 K also boasts advanced audio capabilities. It allows for audio embedding and de-embedding, making it possible for users to manage both audio and video signals from a single device. This feature is particularly useful in settings where high-quality sound is essential, allowing for easier integration with external audio systems.

In terms of control, the VP-81 K is user-friendly. It provides multiple controlling options, including front-panel buttons, remote control, and RS-232 for integration with third-party systems. This flexibility ensures that users can easily manage their presentations, regardless of their technical expertise.

For enhanced security and performance, the VP-81 K features robust signal processing technology. It maintains signal integrity over long cable runs, ensuring that presentations remain professional and reliable. Additionally, the device is designed with durability in mind, utilizing high-quality components that withstand the rigors of frequent use.

Overall, the Kramer Electronics VP-81 K is a powerful and adaptable presentation switcher, equipped with essential features and cutting-edge technologies that cater to modern audiovisual needs. Whether in educational settings or corporate environments, its capabilities are sure to elevate any presentation experience.
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