Kramer Electronics VP-81 K 6.4 Setting the Audio Gain

22 VP-81K - Operating Your VP-81K 8x1 UXGA/Audio Switcher

6.3.1 Operating in Breakaway Mode

To operate in breakaway mode, in which video and audio channels switch

independently:

• Press either the VIDEO button or the AUDIO button (only one button, the

VIDEO button or the AUDIO button illuminate at this time)

If the VIDEO button illuminates, the switching relates just to video (and the

audio remains unchanged)

If the AUDIO button illuminates, the switching relates only to audio (and the

video remains unchanged)

6.3.2 Toggling between Video and Audio Control in Breakaway Mode

To toggle between video and audio control, press the corresponding button:

• For audio, press the AUDIO button

This selects audio, illuminating the AUDIO button (the VIDEO button will not

illuminate), or

• For video, press the VIDEO button

This selects video, illuminating the VIDEO button (the AUDIO button will not

illuminate)

6.3.3 Operating in the Audio-Follow-Video Mode

To operate in audio-follow-video (AFV) mode, press both the VIDEO and the

AUDIO buttons simultaneously.

In AVF mode the AUDIO and VIDEO buttons both illuminate. If only one button illuminates

(AUDIO or VIDEO), the unit operates in the breakaway mode

6.4 Setting the Audio Gain

You can increase/decrease the output (from -36dB to 6dB) using the AUDIO GAIN

+ and - buttons. Also you can set the audio gain for each input individually using IR

remote control or RS-232/Ethernet protocol commands.

Contents

Main USER MANUAL Page Page 1 Introduction 2 Getting Started 2.1 Achieving the Best Performance 3 Overview 3.1 DDC Support 3.2 Defining EDID 3.3 Defining the VP-81K 8x1 UXGA/Audio Switcher Page 6 VP-81K Overview Figure 2: VP-81K 8x1 UXGA/Audio Switcher Rear Panel 3.4 Using the IR Transmitter 4 Installing in a Rack ! CAUTION! This section provides instructions for rack mounting the unit. Before Installing in a Rack How to Rack Mount 5 Connecting the VP-81K 5.1 Connecting the Balanced/Unbalanced Stereo Audio Output 5.2 Controlling via RS-232 to PC PC 5.3 Connecting a PC or Controller to the RS-485 Port 5.4 Controlling the VP-81K via the Ethernet Port 5.4.1 Connecting the Ethernet Port Directly to a PC (Crossover Cable) Page 5.4.2 Connecting via a Straight-Through Cable 5.4.3 Configuring the Ethernet Port 5.4.4 Controlling via the Embedded Web Pages Page Page 5.5 DIP-Switch Settings (1 2 3) 5.5.1 Setting the MACHINE # 5.6 Cascading Machines Page 6 Operating Your VP-81K 8x1 UXGA/Audio Switcher 6.1 Using the Front Panel Input Selector Buttons 6.2 Using the Regular or Automatic Switching Mode 6.2.1 The Regular Switching Mode 6.2.2 The Automatic Switching Mode 6.3 Using the Audio-Follow-Video/Breakaway Modes 6.3.1 Operating in Breakaway Mode 6.3.2 Toggling between Video and Audio Control in Breakaway Mode 6.3.3 Operating in the Audio-Follow-Video Mode 6.4 Setting the Audio Gain 7 Technical Specifications 8 Communication Parameters The following table lists the communication parameters as used in Kramer Electronics products. 9 Table of ASCII Codes for Serial Communication (Protocol 3000) 10 Table of Hex Codes for Serial Communication (Protocol 2000) The following table lists the hex codes that increase or decrease audio input gain. The following table lists the hex codes that increase or decrease the audio output gain. Page 11 Kramer Protocol 11.1 Switching Protocols 11.1.1 Switching Protocols via the Front Panel Buttons 11.1.2 Switching Protocols via Protocol Commands 11.2 Kramer Protocol 3000 30 VP-81K - Kramer Protocol 11.2.2 Command Part Details Help Commands Command Syntax Response Protocol Handshaking #CR ~OKCRLF Page Page Page Page 36 VP-81K - Kramer Protocol 11.3 Kramer Protocol 2000 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 VP-81K - Kramer Protocol 37 38 VP-81K - Kramer Protocol VP-81K - Kramer Protocol 39 We warrant this product free from defects in mater ial and workmanship under the following terms. !