Kramer Electronics, Ltd.
Contents Contents 1 2 3 4 4.1 4.2 4.3 4.4 4.
Introduction 1 Introduction Welcome to Kramer Electronics (since 1981): a world of unique, creative and affordable solutions to the infinite range of problems that confront the video, audio and presentation professional on a daily basis. In recent years, we have redesigned and upgraded most of our line, making the best even better! Our 500-plus different models now appear in 8 Groups1, which are clearly defined by function.
Overview 3 Overview CAT 5/5e/6 cabling for this product must be pinned to the TIA-EIA T568B wiring specification (see appendix A). We also highly recommend that all CAT 5 cables be pre-terminated and tested. Cables terminated on-site or in an existing infrastructure should be tested before use to ensure compliance with the TIA-EIA T568B specification. Using incorrectly terminated CAT 5 cables can damage this product.
Setup and Installation 4 Setup and Installation First ensure all units have been configured for correct operation and signal types. See appropriate configuration sections of this manual and the respective transmitter manual. 4.1 Making the Connections This section contains figures showing connections with the specific Cobra R500A / R500-2 series models.
Setup and Installation 4.2 Connections on the VGA/Audio Transmitter The single-port units with audio support video and audio signals over CAT 5 cable. The audio signal is line-level audio, and powered speakers are required. Figure 1 shows the Kramer Cobra transmitter with Audio Transmitter connections, and Figure 2 shows the Kramer Cobra R500A Video-Audio receiver.
Setup and Installation 4.3 Connections on the Video/Serial Transmitter The single-port units with audio support video and serial signals over CAT 5 cable. The serial signal is 3 wire TX, RX, GND serial. Figure 3 shows the Kramer Cobra transmitter with serial Transmitter connections, and Figure 4 shows the Cobra R500-2 Video-RS-232 receiver. See Appendix A for cable pinouts of the Cobra R500-2.
Setup and Installation 4.4 Configuration Settings The Cobra R500A and the Cobra R500-2 are configurable for various video, audio and serial modes. Note that a compatible transmitter unit must be used at the source end. Reference the appropriate transmitter user guide or call for technical assistance. It is not possible to change an audio unit to a serial unit and vice versa. A dipswitch on the receiver unit is used to set the video, audio, serial configuration mode.
Solutions to Common Problems 5 Solutions to Common Problems In most cases, nearly every issue with the Cobra series can be resolved by checking the CAT 5 termination and making sure that it’s pinned to the TIA/EIA 568B wiring specification. However, there may be other problems that cause the system to not perform as it is designed. Below are solutions to the most common installation errors.
Solutions to Common Problems Appendix A Cabling Pinouts Table 3: HD15 Video Connector PINOUT 8 Pin RGBHV (VGA) RGBS RGsB 1 Red + Red + Red + 2 Green+ Green+ Green+ 3 Blue+ Blue+ Blue+ 4 — — — 5 Gnd Gnd Gnd 6 Red- Red- Red- 7 Green- Green- Green- 8 Blue- Blue- Blue- 9 — — — 10 Gnd Gnd — 11 Gnd Gnd — 12 — — — 13 H Sync C Sync — 14 V Sync — — 15 Gnd Gnd — Composite SVHS (Y/C) C+ YUV C+ V+ Y+ Y+ U+ C- C- V- Y- YU- KRAMER: SIMPLE CRE
Solutions to Common Problems Table 4: T568B CAT 5 PINOUT Table 5: 1/8” (3.5 mm) Audio/Serial Connection (model dependent) Pin Signal Tip Serial Tx (DB9 pin3) Left Audio+ Ring Serial Rx (DB9 pin2) Right Audio+ Sleeve Serial GND (DB9 pin5) GND Note: The stereo audio input at the transmitter is summed and output as mono audio on both channels at the receiver.
Technical Specifications 6 Technical Specifications 1 Table 6: Technical Specifications of the Cobra R500A, Cobra R500-2 CABLE REQUIRED: COMPLIANCE: VIDEO SUPPORT: Category 5, 5e, 6 shielded or unshielded twisted pair CE; FCC Class A, IC Class/class A To UXGA (1600x1200 @ 60Hz), RGBHV, RGB, Composite, s-Video, Component Video modes At 500 ft.
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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. Caution Kramer Electronics, Ltd. Web site: www.kramerelectronics.com E-mail: info@kramerel.
