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Kramer KDS-SW3-EN7 User Manual

4k avoip encoder with dante
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USER MANUAL
MODEL:
KDS-SW3-EN7 4K AVoIP Encoder with Dante
P/N: 2900-301604 Rev 1
www.kramerAV.com

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Summary of Contents for Kramer KDS-SW3-EN7

  • Page 1 USER MANUAL MODEL: KDS-SW3-EN7 4K AVoIP Encoder with Dante P/N: 2900-301604 Rev 1 www.kramerAV.com...

  • Page 2: Table Of Contents

    Defining KDS-SW3-EN7 LED Functionality Mounting KDS-SW3-EN7 Connecting KDS-SW3-EN7 and KDS-DEC7 Connecting the Audio Input/Output Connecting to KDS-SW3-EN7 via RS-232 Connecting to KDS-SW3-EN7 via Ethernet Fast switching configuration Operating and Controlling from the Front Panel Using the Menu Navigation Button Using the LCD Display Menu...

  • Page 3: Introduction

    Kramer Electronics Ltd. 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...

  • Page 4: Overview

    European Advanced 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 www.kramerav.com/il/quality/environment.

  • Page 5: Typical Applications

    • Selectable Inputs – 2 HDMI and 1 USB-C input. • Analog/Digital audio inputs and outputs. • Plug-and-play with Netgear M4250 AVoIP switches, Kramer Control, and KDS-USB2. Typical Applications KDS-SW3-EN7 is ideal for the following typical applications: • Real-time essential installations such as command and control rooms.

  • Page 6: Defining Kds-Sw3-En7

    USB-C IN Port Connect to a USB-C source. • This port can receive video, audio and USB 2.0 data. • When powered by a Kramer 24V power supply (optional), charges sources (that support USB Power Delivery 2.0) up to 60W.

  • Page 7: Led Functionality

    Flashes Green very fast (for A device identification command is sent (Flag me). 60sec) Lights Yellow Device falls back to the default IP address. Post reboot, all LEDs light for 3 seconds then return to their normal LED display mode. KDS-SW3-EN7 – Defining KDS-SW3-EN7...

  • Page 8: Mounting Kds-Sw3-En7

    Kramer Electronics Ltd. Mounting KDS-SW3-EN7 This section provides instructions for mounting KDS-SW3-EN7. Before installing, verify that the environment is within the recommended range: • Operation temperature – 0 to 40C (32 to 104F). • Storage temperature – -40 to +70C (-40 to +158F).

  • Page 9: Connecting Kds-Sw3-En7 And Kds-Dec7

    Always switch off the power to each device before connecting it to your KDS-SW3-EN7 KDS-SW3-EN7. After connecting your devices, connect their power and then switch on the power to each device. Figure 2: Connecting the KDS-SW3-EN7 and KDS-SW3-EN7...

  • Page 10: Connecting The Audio Input/Output

    KDS-SW3-EN7 to a balanced stereo audio acceptor (for example, an audio amplifier). 7. Connect the USB ports: ▪ On KDS-SW3-EN7, connect the two USB Type A ports ( Figure 1) to a (for example) webcam and a speakerphone. ▪ On KDS-DEC7, connect a mouse and a keyboard to the two USB type A ports.

  • Page 11: Connecting To Kds-Sw3-En7 Via Rs-232

    Before setting the system, make sure that your AV over IP network switch meets the following minimum requirements: • Jumbo Frames – On. (at least 8000 bytes). • IGMP Snooping – On. • IGMP Querier – On. • IGMP Immediate/Fast Leave – On. • Unregistered Multicast Filtering – On. KDS-SW3-EN7 – Connecting KDS-SW3-EN7 and KDS-DEC7...
  • Page 12 Figure 6: Local Area Connection Properties Window 4. Highlight Internet Protocol Version 4 (TCP/IPv4) or Internet Protocol Version 6 (TCP/IPv6) if your system uses it. 5. Click Properties. The Internet Protocol Properties window relevant to your IT system appears. KDS-SW3-EN7 – Connecting KDS-SW3-EN7 and KDS-DEC7...
  • Page 13 You can use any IP address in the range 192.168.1.1 to 192.168.1.255 (excluding 192.168.1.39) that is provided by your IT department. Figure 8: Internet Protocol Properties Window 7. Click OK. 8. Click Close. KDS-SW3-EN7 – Connecting KDS-SW3-EN7 and KDS-DEC7...

  • Page 14: Fast Switching Configuration

    2 the following settings need to be identical on the input source: ▪ HDCP setting. ▪ Resolution and Refresh rate. 4. On the decoders, set the Maximum Resolution in the AV Settings>Video page to be identical to the encoder. Fast switching is configured. KDS-SW3-EN7 – Connecting KDS-SW3-EN7 and KDS-DEC7...

  • Page 15: Operating And Controlling From The Front Panel

    • Left arrow – Return to the previous menu. • Right arrow – Go to the next menu. • Enter button – Accept and save the change. Figure 10: Navigation button KDS-SW3-EN7 – Operating and Controlling from the Front Panel...

  • Page 16: Using The Lcd Display Menu

    1. Press Enter on the navigation button to open the Main Menu. 2. Press Enter to open the Dev Status menu. 3. Use the Up/Down arrows to select LAN1. The IP address is displayed. KDS-SW3-EN7 – Operating and Controlling from the Front Panel...

  • Page 17: Setting The Channel Number

    You can set the channel number via the LCD screen menu or the embedded web pages. To set the channel number for KDS-SW3-EN7, via LCD screen menu: 1. Press Enter on the navigation button to open the Main Menu.

  • Page 18: Selecting The Edid

    If HDCP is active on HDMI or USB-C, it will have an asterisk next to it. Use the arrow keys to activate HDCP on another input type. 4. Press Enter to accept the HDCP mode. HDCP on the input is set. KDS-SW3-EN7 – Operating and Controlling from the Front Panel...

  • Page 19: Operating And Controlling From The Embedded Web Pages

    Viewing KDS-SW3-EN7 Status on page 46. • Viewing KDS-SW3-EN7 Connections Status on page 47. • Viewing KDS-SW3-EN7 Advanced Status on page 48. • Viewing the About Page on page 49. KDS-SW3-EN7 – Operating and Controlling from the Embedded Web Pages...

  • Page 20: Opening The Embedded Web Pages

    If an embedded web page does not update correctly, clear your Web browser’s cache. To browse the KDS-SW3-EN7 embedded web pages: 1. Find the IP address of the KDS-SW3-EN7. The default IP (when connected directly to a computer) is 192.168.1.39, see also...

  • Page 21: Defining Av Routing Parameters

    Play/Stop: Start or stop streaming of video, audio, IR, RS-232 and USB signals. 4. View the following streaming parameters: HDCP Encryption, Resolution, Aspect Ratio, Audio Channels, Audio Rate and Audio Format. Routing parameters are defined. KDS-SW3-EN7 – Operating and Controlling from the Embedded Web Pages...

  • Page 22: Defining Auto Switching

    To define input auto switching settings: 1. In the Navigation pane, Select AV. The Auto Switch tab in the AV Routing page appears: Figure 13: AV Settings Page – Auto Switch Tab KDS-SW3-EN7 – Operating and Controlling from the Embedded Web Pages...

  • Page 23: Defining Signal Loss Timeouts

    Signal Loss Switching Manual Override Delay – From when KDS-SW3-EN7 detects a signal loss on manual override to when it switches to a different input (default 10). 3. Click SAVE. Signal loss timeouts are defined. KDS-SW3-EN7 – Operating and Controlling from the Embedded Web Pages...

  • Page 24: Defining Hdmi Input Settings

    Maximum Video Frame Rate (%): use the slider to configure the maximum frame rate in proportion. 100% (default) means zero compression on the frame rate. 3. Click SAVE. HDMI input settings are defined. KDS-SW3-EN7 – Operating and Controlling from the Embedded Web Pages...

  • Page 25: Defining Audio Settings

    Audio Connection Guard Time field, the system will switch to the video source (HDMI/USB-C). ▪ Manual – The Audio Source Selection field defines the source for the audio. KDS-SW3-EN7 – Operating and Controlling from the Embedded Web Pages...

  • Page 26: Defining Dante Audio As A Source Or Destination

    3. Activate Dante transmission from the Service or Media port in the (KDS-SW3-EN7 webpages) Device Settings page, Network tab (see Using the Service Port for Dante, P3K & Gateway transmissions on page 33). KDS-SW3-EN7 – Operating and Controlling from the Embedded Web Pages...

  • Page 27: Managing Edid

    Figure 17: AV Settings Page – EDID Management Tab 2. Set EDID Lock: ▪ ON - Locks the last acquired EDID. ▪ OFF - Unlock and acquire a new EDID. KDS-SW3-EN7 – Operating and Controlling from the Embedded Web Pages...
  • Page 28 To save an EDID file - Click UPLOAD and select an EDID file to upload. The EDID file is added to the list. Figure 18: The saved EDID List EDID is managed. KDS-SW3-EN7 – Operating and Controlling from the Embedded Web Pages...

  • Page 29: General Device Settings

    Importing/Exporting Device Settings on page 31. • Locating the Device on page 32. • Managing the Firmware Version on page 32. • Restarting or Resetting the Device on page 32. KDS-SW3-EN7 – Operating and Controlling from the Embedded Web Pages...
  • Page 30 Click Off, to unlock the front panel buttons and enable device control from the front panel via the LCD screen and the navigation buttons(see Using the Menu Navigation Button on page 15). Front panel buttons are locked/unlocked. Figure 20: Front Panel Lock KDS-SW3-EN7 – Operating and Controlling from the Embedded Web Pages...
  • Page 31 Select the file to import (settings.tar.gz). ▪ Click Open to import the file. 4. To export settings, click EXPORT. The settings file is created (settings.tar.gz). The settings file is imported/exported. Figure 21: Import/Export Device Settings KDS-SW3-EN7 – Operating and Controlling from the Embedded Web Pages...
  • Page 32 Click ROLLBACK to update to the previous FW version. Restarting or Resetting the Device Click RESTART to reboot the device, click RESET to restore device factory default settings. Figure 23: Update Firmware KDS-SW3-EN7 – Operating and Controlling from the Embedded Web Pages...

  • Page 33: Kds-Sw3-En7 Network Settings

    - The Service port is optional. It has a separate IP address and can be used for Protocol 3000 commands, Gateway traffic and/or Dante audio streaming. Figure 24: Ethernet ports on the rear of the KDS-SW3-EN7 Figure 25: Device Settings Page – Network Tab...
  • Page 34 IP packet from propagating endlessly through the network. The default value is 64, which means that after 64 hops the data packet is dropped. Figure 26: Network Settings – IP Casting Mode KDS-SW3-EN7 – Operating and Controlling from the Embedded Web Pages...
  • Page 35 To manage TCP and UDP ports: Open the Device Settings page, Network tab: The default values are TCP Port - 5000 and UDP Port - 50000. Figure 27: Device Settings – Port Management KDS-SW3-EN7 – Operating and Controlling from the Embedded Web Pages...

  • Page 36: Defining Kds-Sw3-En7 Time And Date

    5. Click SAVE. The device’s date and time are synchronized to the server address entered. The date and time can only be set by NTP synchronization (manual setting is not available). KDS-SW3-EN7 – Operating and Controlling from the Embedded Web Pages...

  • Page 37: Setting Kds-Sw3-En7 Security

    2. Select the Security tab: Figure 29: Device Settings Page – Security Tab 3. For HTTPS server, click On to enable HTTPS authentication service (default) or Off to disable HTTPS authentication. KDS-SW3-EN7 – Operating and Controlling from the Embedded Web Pages...
  • Page 38 PEAP-MSCHAP V2 – To use this authentication method, enter a Username (up to 24 alphanumeric characters, including “_” and “-“ characters within the username) and Password (up to 24 ASCII characters): Figure 31: Security Tab – EAP-MSCHAP V2 Authentication KDS-SW3-EN7 – Operating and Controlling from the Embedded Web Pages...
  • Page 39 (assigned by IT administrator). Set Server Certificate On. Figure 32: EAP-TLS – Certificates and Password 5. Click APPLY. Security is configured. KDS-SW3-EN7 – Operating and Controlling from the Embedded Web Pages...

  • Page 40: Defining Kds-Sw3-En7 User Access

    Figure 34: Security Tab – Security Status 4. Click PROCEED. The web page refreshes, and the password fields are visible. Security is enabled and access requires authentication. KDS-SW3-EN7 – Operating and Controlling from the Embedded Web Pages...
  • Page 41 3. Click Off in Security Status to disable password use. The following message appears. Figure 36: Security Tab – Security Status 4. Enter the current password. 5. Click PROCEED. Security is disabled. KDS-SW3-EN7 – Operating and Controlling from the Embedded Web Pages...
  • Page 42 8 to 24 characters long. 6. Next to Confirm Password, enter the new password again. 7. Click CHANGE. Password has changed. KDS-SW3-EN7 – Operating and Controlling from the Embedded Web Pages...

  • Page 43: Defining Kds-Sw3-En7 Gateway Settings

    4. Enter the CEC command. Use hex format for the CEC command, up to 32 hex digits. 5. Click SEND. 6. View the CEC-enabled device response. CEC Gateway is configured. KDS-SW3-EN7 – Operating and Controlling from the Embedded Web Pages...
  • Page 44 5. Enter the Data Bits: 5, 6, 7 or 8 (default). 6. Enter Parity: None (default), Odd or Even. 7. Enter Stop Bits: 1 (default) or 2. 8. Click SAVE. RS-232 Gateway is configured. KDS-SW3-EN7 – Operating and Controlling from the Embedded Web Pages...
  • Page 45 IN – Configure the IR port as an input port that is connected to an IR receiver cable. ▪ OUT – Configure the IR port as an output port that is connected to an IR emitter cable. IR Gateway is configured. KDS-SW3-EN7 – Operating and Controlling from the Embedded Web Pages...

  • Page 46: Viewing Kds-Sw3-En7 Status

    5. View HDMI OUT and LAN output status: ▪ On, when an output is transmitting a signal (green indication). ▪ Off, when an output has no signal output (gray indication). Device status is viewed. KDS-SW3-EN7 – Operating and Controlling from the Embedded Web Pages...

  • Page 47: Viewing Kds-Sw3-En7 Connections Status

    1. In the Navigation pane, click Diagnostics. 2. Select the Connections tab. Figure 42: Diagnostics – Status Tab 3. View the active connections to the device and their details. Connections’ status is viewed. KDS-SW3-EN7 – Operating and Controlling from the Embedded Web Pages...

  • Page 48: Viewing Kds-Sw3-En7 Advanced Status

    4. Click VIEW to view the system log (if active). 5. Click EXPORT to export the system log (in .txt format) to the local PC. 6. The Gateway Messages Counter is displayed online. System log and counters are viewed. KDS-SW3-EN7 – Operating and Controlling from the Embedded Web Pages...

  • Page 49: Viewing The About Page

    Kramer Electronics Ltd. Viewing the About Page View the web page hardware release, firmware version and Kramer Electronics Ltd details in the About page. Figure 44: About Page KDS-SW3-EN7 – Operating and Controlling from the Embedded Web Pages...

  • Page 50: Upgrading Firmware

    Upgrade the firmware, view the date of the last upgrade, or rollback to the previous firmware revision in case of a problem. Click ROLLBACK to update to the previous FW version. If the device firmware version is lower than 0.11.11, contact Kramer tech support team at support@kramerav.com or go to our Web site at k.kramerav.com/support/downloads.asp.

  • Page 51: Technical Specifications

    0° to +45°C (32° to 113°F) Conditions Storage Temperature -20° to +70°C (-4° to 158°F) Humidity 10% to 90%, RHL non-condensing Regulatory Safety CE, FCC Compliance Environmental RoHs, WEEE Enclosure Size Mega Tool Deep Type Aluminum KDS-SW3-EN7 – Technical Specifications...
  • Page 52 19cm x 14.5cm x 2.8cm (7.5" x 5.7" x 1.1") Shipping Dimensions (W, D, H) 31cm x 18cm x 7.6cm (12.2" x 7.09" x 2.99") Net Weight 0.67kg (1.4lbs) approx. Shipping Weight 0.93kg (2lbs) approx. Specifications are subject to change without notice at www.kramerav.com KDS-SW3-EN7 – Technical Specifications...

  • Page 53: Default Communication Parameters

    Red: (0.640, 0.330) Green: (0.300, 0.600) Blue: (0.150, 0.060) White: (0.313, 0.329) Established Timings I 640 x 480 @ 60Hz 800 x 600 @ 60Hz Established Timings II 1024 x 768 @ 60Hz Manufacturer's Timings: None KDS-SW3-EN7 – Technical Specifications...
  • Page 54 SVD #007: (95) 3840x2160p @ 30 Hz 16:9 SVD #008: (94) 3840x2160p @ 25 Hz 16:9 SVD #009: (93) 3840x2160p @ 24 Hz 16:9 SVD #010: (100) 4096x2160p @ 30 Hz 256:135 SVD #011: (99) 4096x2160p @ 25 Hz 256:135 KDS-SW3-EN7 – Technical Specifications...
  • Page 55 HSync Delay: 70 HSync Width: 143 VSync Delay: 3 VSync Width: 3 Image size: 89 mm x 50 mm Border: 0 pixels x 0 lines Stereo mode: Normal display, no stereo Sync: Digital Separate, VSYNC+, HSYNC+ KDS-SW3-EN7 – Technical Specifications...

  • Page 56: Default Parameters

    On; Internal Certificate IEE 802.1X Authentication Users Security Status Inactivity auto-logout time Control Settings CEC Gateway Enable CEC Gateway HDMI Port HDMI Input RS232 Gateway Enable RS232 Port 5001 RS232 Baud rate 115200 RS232 Data Bits KDS-SW3-EN7 – Technical Specifications...
  • Page 57 Kramer Electronics Ltd. Page Tab Name Fields Editab Exportabl Default Values Name e Field Field Parity None Stop Bits IR Direction IN/OUT Diagnostics Advanced Active Syslog KDS-SW3-EN7 – Technical Specifications...

  • Page 58: Protocol 3000

    Parameters attributes – Parameters may contain multiple attributes. Attributes are indicated with pointy brackets (<…>) and must be separated by a period (.). The command framing varies according to how you interface with the KDS-SW3-EN7. The following figure displays how the # command is framed using terminal communication software (such as Hercules): KDS-SW3-EN7 –...

  • Page 59: Protocol 3000 Commands

    – 5999) – Ethernet Reply eth_rep_en 1,0,5001,1,1<CR> 0 – COM port does not send replies to new clients 1 – COM port sends replies to new clients. – Keep alive timeout in timeout seconds (1 to 3600) KDS-SW3-EN7 – Protocol 3000...
  • Page 60 The port number must be within the following range: 0- (2^16-1). – TCP/UDP ETH-PORT? Get Ethernet port #ETH-PORT? port_type<CR> ~nn@ETH-PORT port_type – protocol. port_type,port_id<CR><LF> port_id when port_type = TCP: 5000~5099 when port_type = UDP: 50000~50999 KDS-SW3-EN7 – Protocol 3000...
  • Page 61 8 to 24 characters #HTTP-PASSWD (letters, numbers, and symbols without admin,dGVzdA==< spaces or commas), at least including CR> one number, one symbols without spaces or commas, one uppercase letter and one lowercase letter. KDS-SW3-EN7 – Protocol 3000...
  • Page 62 1 – Service KDS-GW- Get gateway network #KDS-GW-ETH? gw_type<CR> ~nn@KDS-GW-ETH gw_type Get network port 0 – Control ETH? port. gw_type,netw_id<CR><LF> gateway port – Network ID–the device netw_id #KDS-GW-ETH? network interface: 0<CR> 0 – Media Port 1 – Service KDS-SW3-EN7 – Protocol 3000...
  • Page 63 Streaming Method. value - Time to Live of the streamed #KDS- packets. MULTICAST?<CR > – Streamer Decoder Aspect KDS-RATIO? Get aspect ratio. #KDS-RATIO?<CR> ~nn@KDS-RATIO value Get Aspect Ratio value<CR><LF> Ratio #KDS- width:height, for example “16:9” RATIO?<CR> KDS-SW3-EN7 – Protocol 3000...
  • Page 64 1 = No VLAN tag 0,33<CR> KDS-VLAN- Get vlan tag of #KDS-VLAN-TAG? gw_type<CR> ~nn@KDS-VLAN-TAG gw_type: Get control vlan 0 – Control TAG? gateway port. gw_type,tag_id<CR><LF> tag: – vlan tag (2 to 4093) tag_id #KDS-VLAN-TAG? 1 = No VLAN tag 0<CR> KDS-SW3-EN7 – Protocol 3000...
  • Page 65 ~nn@LOG-TAILnn<CR><LF> is 10 lines of message Line content #1<CR><LF> logs: Used for Line content #2<CR><LF> #LOG-TAIL? advanced Etc... 2<CR> troubleshooting. Helps find error root causes and gets details not displayed in the error code number. KDS-SW3-EN7 – Protocol 3000...
  • Page 66 #NAME 0,room- model name. The 442<CR> machine name is used to identify a specific machine or a network in use (with DNS feature on). KDS-SW3-EN7 – Protocol 3000...
  • Page 67 IP address set by the factory or the Ethernet control the net-ip command). port. – Unique MAC address. NET-MAC? Get MAC address. #NET-MAC?<CR> ~nn@NET-MAC mac_address #NET-MAC?<CR> mac_address<CR><LF> Format: XX-XX-XX-XX-XX-XX where X is hex digit KDS-SW3-EN7 – Protocol 3000...
  • Page 68 – Type of signal on the <port_format> lists port IDs port: separated by HDMI commas. ANALOG_AUDIO This is an Extended RS-232 Protocol 3000 command. USB_A USB_B USB_C STREAM – The port number as <port_index> printed on the front or rear panel. KDS-SW3-EN7 – Protocol 3000...
  • Page 69 #TIME?<CR> The year must be – Format: hh:mm:ss where data 4 digits. The device does not validate the day of week from the date. Time format - 24 hours. Date format - Day, Month, Year. KDS-SW3-EN7 – Protocol 3000...
  • Page 70 Command for KDS-7 UPGRADE Perform firmware #UPGRADE<CR> ~nn@UPGRADE ok<CR><LF> Perform firmware upgrade. upgrade: #UPGRADE<CR> Not necessary for some devices. Firmware usually uploads to a device via a command like LDFW. Reset the device to complete the process. KDS-SW3-EN7 – Protocol 3000...
  • Page 71 – Signal ID attribute: <signal_type> VIDEO AUDIO – Indicates a specific channel <index> number when there are multiple channels of the same type connection_mode – Connecton mode 0 – manual 1 – priority 2 – last connected KDS-SW3-EN7 – Protocol 3000...
  • Page 72 R> – Type of signal on the index>.<signal_type> <port_format> ,...]<CR><LF> port: HDMI USB_C ANALOG_AUDIO STREAM – The port number as <port_index> printed on the front or rear panel. – Signal ID attribute: <signal_type> VIDEO AUDIO KDS-SW3-EN7 – Protocol 3000...
  • Page 73 – Signal ID attribute: out.hdmi.1<CR> <signal_type> is interpreted as: VIDEO #X-ROUTE? AUDIO – Indicates a specific channel out.hdmi.1.video.1<C <index> R> number when there are multiple channels of the same type This is an Extended Protocol 3000 command. KDS-SW3-EN7 – Protocol 3000...

  • Page 74: Result And Error Codes

    (Reserved) ERR_RESERVED_8 (Reserved) ERR_RESERVED_9 (Reserved) ERR_RESERVED_10 (Reserved) ERR_RESERVED_11 (Reserved) ERR_RESERVED_12 (Reserved) ERR_EDID_CORRUPTED EDID corrupted ERR_NON_LISTED Device specific errors File has the same CRC – not changed ERR_SAME_CRC ERR_WRONG_MODE Wrong operation mode ERR_NOT_CONFIGURED Device/chip was not initialized KDS-SW3-EN7 – Protocol 3000...
  • Page 75 This limited warranty gives you specific legal rights, and you may have other rights which vary from country to country or state to state. This limited warranty is void if (i) the label bearing the serial number of this product has been removed or defaced, (ii) the product is not distributed by Kramer Electronics or (iii) this product is not purchased from an authorized Kramer Electronics reseller.
  • Page 76 SAFETY WARNING Disconnect the unit from the power supply before opening and servicing For the latest information on our products and a list of Kramer distributors, visit our website where updates to this user manual may be found. We welcome your questions, comments, and feedback.

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