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Kramer VP-727A User Manual

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Kramer Electronics, Ltd.

USER MANUAL

Model:
VP-727A
Audio Switcher

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Summary of Contents for Kramer VP-727A

  • Page 1: User Manual

    Kramer Electronics, Ltd. USER MANUAL Model: VP-727A Audio Switcher...

  • Page 2: Table Of Contents

    Figure 3: Connecting the VP-727A with a VP-727xl Machine Figure 4: Connecting the PC Figure 5: Connecting 2 VP-727A machines to the VP-727T via 2 VP-727xl Machines Figure 6: Connecting the VP-727A to the VP-727T via the VP-727 Figure 7: RS-485 Configuration between the VP-727A and the VP-727xl...
  • Page 3 Contents Tables Table 1: VP-727A Audio Switcher Features Table 2: VP-727A Audio Switcher Underside Features Table 3: Technical Specifications of the VP-727A Audio Switcher Table 4: Instruction Codes for the VP-727A Protocol KRAMER: SIMPLE CREATIVE TECHNOLOGY...

  • Page 4: Introduction

    2 We recommend that you use only the power cord that is supplied with the machine 3 Download up-to-date Kramer user manuals from the Internet at this URL: http://www.kramerelectronics.com 4 The complete list of Kramer cables is on our Web site at http://www.kramerelectronics.com...
  • Page 5 Getting Started KRAMER: SIMPLE CREATIVE TECHNOLOGY...

  • Page 6: Overview

    Separate mute buttons for the preview and program channels Bass, treble and balance audio controls Audio delay for each input channel You can control the VP-727A via the front panel buttons and/or RS-232. Achieving the best performance means: Connecting only good quality connection cables, thus avoiding interference,...

  • Page 7: Figure 1: Vp-727A Audio Switcher

    Your VP-727A Audio Switcher 22 23 Figure 1: VP-727A Audio Switcher KRAMER: SIMPLE CREATIVE TECHNOLOGY...
  • Page 8 (PREVIEW AND PROGRAM) 5 To reset the VP-727A to its factory default settings, turn the unit OFF, then turn it ON while pressing the TAKE button for about 2 seconds: The preview and program input is set to input 1, the input volume resets to 0dB, and the bass and treble levels reset to 0...

  • Page 9: The Vp-727A Audio Switcher Underside

    Feature Function PROGRAM Slide Switch Slide to ON to upgrade to the latest Kramer firmware (see section 7), or to the right for normal operation (the factory default) RS-485 TERMINATION Slide Slide to ON for RS-485 Line Termination with 120 , or to the right...

  • Page 10: Installing The Vp-727A Audio Switcher On A Rack

    Installing the VP-727A Audio Switcher on a Rack Installing the VP-727A Audio Switcher on a Rack This section describes what to do before installing in a rack and how to rack mount. Before Installing in a Rack How to Rack Mount...

  • Page 11: Configuring The Vp-727A Audio Switcher

    5 You can download this user manual from the Internet at: http://www.kramerelectronics.com 6 When connecting the VP-727A to the VP-727, set DIP 7 to ON and make sure that all the other dipswitches are set to OFF 7 We recommend that you use only the power cord that is supplied with this machine...

  • Page 12: Figure 3: Connecting The Vp-727A With A Vp-727Xl Machine

    Configuring the VP-727A Audio Switcher Figure 3: Connecting the VP-727A with a VP-727xl Machine...

  • Page 13: Connecting A Pc (Via Rs-232) To A Standalone Vp-727A

    DB9 (From PC) Switcher / Scaler) Figure 4: Connecting the PC 1 When the VP-727A is configured with the VP-727xl, the audio follows the video and the VP-727A cannot be controlled via a PC 2 Also known as a Null-modem connection...

  • Page 14: Configuring The Vp-727A With The Vp-727Xl And The Vp-727T

    The example in Figure 5 illustrates how to connect two VP-727A machines and two VP-727xl machines to a VP-727T controller. On each VP-727A machine, set DIP 8 to ON. The other dipswitches are set to OFF Figure 5: Connecting 2 VP-727A machines to the VP-727T via 2 VP-727xl Machines...

  • Page 15: Figure 6: Connecting The Vp-727A To The Vp-727T Via The Vp-727

    The example in Figure 6 illustrates how to connect a VP-727A and a VP-727 machine to a VP-727T controller. On the VP-727A, set DIP 7 to ON. The other dipswitches are set to OFF Figure 6: Connecting the VP-727A to the VP-727T via the VP-727...

  • Page 16: Connecting Via Rs-485

    VP-727A to the A (+) PIN on the AUDIO CONTROL rear panel port of the VP-727xl unit Connect the “B” (-) PIN on the RS-485 rear panel port of the VP-727A to the B (-) PIN on the AUDIO CONTROL rear panel port of the...

  • Page 17: Connecting The Vp-727A To The Vp-727T Via The Vp-727

    1. Connect the VP-727A to the VP-727 as follows: Connect the “A” (+) PIN on the RS-485 rear panel port of the VP-727A to the A (+) PIN on the RS-485 rear panel port of the VP-727 unit Connect the “B” (-) PIN on the RS-485 rear panel port of the VP-727A...

  • Page 18: Figure 8: Rs-485 Configuration Between The Vp-727A And The Vp-727

    If shielded twisted pair cable is used, the shield may be connected to the “G” (Ground) PIN on one of the units 3. Slide the underside RS-485 TERMINATION switch to ON. VP-727A VP-727 VP-727T Side Panel RS-485 PINOUT Figure 8: RS-485 Configuration between the VP-727A and the VP-727...

  • Page 19: Flash Memory Upgrade

    3. Create a shortcut on your desktop to the file: “FLIP.EXE”. 7.2 Connecting the PC to the RS-232 Port Before installing the latest Kramer firmware version on a VP-727A unit, do the following: 1. Connect the RS-232 DB9 rear panel port according to section 6.2.

  • Page 20: Upgrading Firmware

    Flash Memory Upgrade 7.3 Upgrading Firmware Follow these steps to upgrade the firmware: 1. Double click the desktop icon: “Shortcut to FLIP.EXE”. The Splash screen appears as follows: Figure 9: Splash Screen 2. After a few seconds, the Splash screen is replaced by the “Atmel – Flip” window: Figure 10: Atmel –...

  • Page 21: Figure 11: Device Selection Window

    4. Click the button next to the name of the device and select from the list: AT89C51RD2: AT89C51RD2 T89C51RD2 Figure 12: Selecting the Device Window 5. Click OK and select “Load Hex” from the File menu. KRAMER: SIMPLE CREATIVE TECHNOLOGY...

  • Page 22: Figure 13: Loading The Hex

    Figure 13: Loading the Hex 6. The Open File window opens. Select the correct HEX file that contains the updated version of the firmware for VP-727A (for example 44M_V1p2.hex) and click Open. 7. Press the keyboard shortcut key F3 (or select the “Communication / RS232”...

  • Page 23: Figure 15: Atmel - Flip Window (Connected)

    Figure 16: Atmel – Flip Window (Operation Completed) 10. Close the “ Atmel – Flip” window. 11. Disconnect the power on the VP-727A. 1 See also the blue progress indicator on the status bar 2 If an error message: “ Not Finished” shows, click Run again...

  • Page 24: Technical Specifications

    Technical Specifications 12. If required, disconnect the RS-232 rear panel port on the VP-727A unit from the Null-modem adapter. 13. Slide the underside PROGRAM switch to the right (see section 4.1). 14. Connect the power to the VP-727A. Upon initialization, the new VP-727A software version shows in the STATUS 7-segment Display.

  • Page 25: Kramer Vp-727A Protocol (Ver. 3.21)

    For RS-485: A differential (2 wire) connection between the VP-727(xl) and the VP-727A is required (A, B; GND may be connected to the shield if required). All values shown are hexadecimal. Table 4: Instruction Codes for the VP-727A Protocol...
  • Page 26 Kramer VP-727A Protocol (Ver. 3.21) INSTRUCTION Byte Byte Byte Byte COMMENT PROGRAM INPUT 1 LEVEL 80 + Value See NOTE 1 PROGRAM INPUT 2 LEVEL 80 + Value PROGRAM INPUT 3 LEVEL 80 + Value PROGRAM INPUT 4 LEVEL 80 + Value...
  • Page 27 Kramer VP-727A Protocol (Ver. 3.21) INSTRUCTION Byte Byte Byte Byte COMMENT READ PREVIEW INPUT 1 See NOTE 3 LEVEL READ PREVIEW INPUT 2 LEVEL READ PREVIEW INPUT 3 LEVEL READ PREVIEW INPUT 4 LEVEL READ PREVIEW INPUT 5 LEVEL READ PREVIEW INPUT 6...
  • Page 28 Kramer VP-727A Protocol (Ver. 3.21) INSTRUCTION Byte Byte Byte Byte COMMENT READ BASS See NOTE 3 READ TREBLE READ BALANCE READ PROGRAM INPUT 1 DELAY READ PROGRAM INPUT 2 DELAY READ PROGRAM INPUT 3 DELAY READ PROGRAM INPUT 4 DELAY...
  • Page 29 Reply 0x46 0x81 0x84 0x81 NOTE 4: In the case where the VP-727A is in “ FADE” mode (ie, not “ CUT” mode), it will send this command via RS-232 after it has completed the transition. KRAMER: SIMPLE CREATIVE TECHNOLOGY...
  • Page 30 For example, for version 3.5, the reply would be 0x7d, 0x83, 0x85, 0x81. NOTE 7: If any parameter was changed the VP-727A replies with the changed parameter instruction. For example if the Program Source was changed to 3, the machine replies 0x42 0x83 0x81 0x81.
  • Page 31 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. 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;...
  • Page 32 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.

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