Kramer Cobra TS2 Manual de usuario

Kramer Electronics, Ltd.

USER MANUAL

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Model:

Cobra TS2

Universal Transmitter

Contents

Introduction 1

Getting Started 1

Overview 2

Setup and Installation 3

4.1

Making the Connections 3

4.2

Connections on the Single-Port VGA/RS-232 4

Solutions to Common Problems 5

Technical Specifications 15

Figures

Figure 1: Connecting the Cobra TS2 with Audio 4

Figure 2: Setting Sync Signal Output Termination 9

Figure 3: DC Restore / AC Coupling Options 10

Figure 4: Cobra TS2 Jumper Locations and Settings 11

Figure 5: Receiver Mounting Bracket 13

Figure 6: Mounting Bracket 13

Tables

Table 1: HD15 Video Connector PINOUT 7

Table 2: Terminal Block PINOUT 7

Table 3: DB9 Female Serial connector 8

Table 4: T568B CAT5 PINOUT 8

Table 5: Cobra TS2 Configuration Jumper Settings 12

Table 6: Technical Specifications of the Cobra TS2 15

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 Groups

, which are clearly defined

by function.

Congratulations on purchasing your Kramer TOOLS Cobra TS2 Universal

Transmitter, which extends VGA, audio and serial signals over ordinary

Category 5 cable. This unit is field configurable for various video, audio and

serial options (see Appendix D for configuration settings).

The TS2 series feature video, audio and RS-232 signals on a single CAT 5

cable.

The package includes the Cobra TS2 Universal Transmitter and this user

manual

The Kramer Cobra series products are not compatible with Kramer non-Cobra

series products.

2 Getting Started

We recommend that you:

Unpack the equipment carefully and save the original box and packaging

materials for possible future shipment

Review the contents of this user manual

Use Kramer high performance high resolution cables

. You may

also need 1/8” (3.5mm) audio cable, video cable with HD15 connectors,

serial cable with DB9 connectors, and CAT5 cable.

1 GROUP 1: Distribution Amplifiers; GROUP 2: Video and Audio Switchers, Matrix Switchers and Controllers; GROUP 3:

Video, Audio, VGA/XGA Processors; GROUP 4: Interfaces and Sync Processors; GROUP 5: Twisted Pair Interfaces;

GROUP 6: Accessories and Rack Adapters; GROUP 7: Scan Converters and Scalers; and GROUP 8: Cables and Connectors

2 Download up-to-date Kramer user manuals from the Internet at this URL: http://www.kramerelectronics.com

3 The complete list of Kramer cables is on our Web site at http://www.kramerelectronics.com

KRAMER: SIMPLE CREATIVE TECHNOLOGY

Overview

3 Overview

Our Kramer Cobra series products are compatible with Cat5/5e/6 data

cabling as well as skew free CAT5/5e cabling manufactured for video

applications. Note that some skew free Cat5 is specific to a particular vendor

and is not compatible with our products. Ensure any skew free CAT5 cable is

non-proprietary prior to purchase / installation.

We recommend using our Kramer Cobra ultra low skew cable—BC-HDTP

(solid bulk) or BCP-HDTP (solid plenum bulk)—available in lengths of 700'

(210m) and 1300' (390m).

CAT6 cable, due to the manufacture method, can exhibit much greater skew

than standard CAT5/5e and may require skew compensation beyond what the

standard product offers. Contact Kramer Electronics for assistance.

CAT5/5e/6 cabling for this product must be pinned to the TIA-EIA T568B

wiring specification (see appendix A). We also highly recommend that all

CAT5 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 CAT5 cables

can damage this product.

Achieving the best performance means:

Connecting only good quality connection cables, thus avoiding

interference, deterioration in signal quality due to poor matching, and

elevated noise levels (often associated with low quality cables)

Avoiding interference from neighboring electrical appliances that may

adversely influence signal quality and positioning your Cobra TS2 in a

location free from moisture and away from excessive sunlight and dust

Caution – No operator-serviceable parts inside unit.

Warning – Use only the Kramer Electronics input power

wall adapter that is provided with this unit

Warning – Disconnect power and unplug unit from wall

before installing or removing device or servicing unit.

Warning –This equipment is not intended for, nor does it

support, distribution through an Ethernet network. Do not

connect these devices to any sort of networking or

telecommunications equipment!

1 For example: model number AD2512C, part number 2535-000251

Setup and Installation

4 Setup and Installation

Data Mode Configuration (RS232 and S2 versions)

The Kramer Cobra TS2 Universal Transmitter is configured in full modem

bidirectional serial modes. If you are using the daisy chain receivers or a

multi-output transmitter a CAT5 matrix switch or CAT5 distribution amp,

this mode must be changed to uni-directional broadcast. To do this, configure

the internal Serial Daughterboard (SDB) to change the transmitters and

receivers serial mode operation (see Appendix E). This configuration should

be done before making any cable connections and applying power.

Alternatively, remove the internal daughterboard and use the transmitters

built in simplex serial option with the appropriate jumper changes.

With regard to connecting the cables:

We recommend mounting and connecting all cabling to the Cobra TS2

Universal Transmitter components before applying power.

Be sure that the CAT5 cable you intend to use has been tested to comply

with the T568B wiring specification (see Appendix A).

4.1 Making the Connections

This section contains figures showing connections with the specific Cobra

Series models. In general, however, the connection and setup procedure at

both transmitter and receiver ends is as follows:

NOTE: all units must be the same type for all supported features to function

correctly. For example, a Cobra TS2 must be connected to a Cobra R500-2

for the serial signals to function. You cannot use the serial option with a Cobra

TS2 and a Cobra R500-2 that is configured for simplex serial. Similarly, a

Cobra TS2 cannot be used with a Cobra R500A. Video modes may function

normally, but 4th pair options will not.

At the transmitter end:

1. Connect the source video to the Cobra TS2 Series transmitter video input

port, which is an HD15 connector labeled VIDEO IN.

2. If desired, attach a local monitor via the local monitor port to LOOP OUT.

3. Make your audio or serial connections via the AUDIO/AUX I/O

connector or DB9 connector as appropriate.

4. Connect the CAT5 cable to the transmitter.

5. Apply power on the transmitter. The LED should light and, if there is a local

monitor attached, a video image should appear on the monitor’s screen.

KRAMER: SIMPLE CREATIVE TECHNOLOGY

Setup and Installation

At the receiver end (refer to the receiver user manual):

1. Connect the VIDEO OUTPUT HD15 connector to the display unit, and

attach any audio (AUX I/O) and/or serial connections (RS-232)

depending on the model of the Cobra CAT5 Video System.

2. Connect the CAT5 cable to the LINK INPUT connection. If daisy

chaining units, connect the output CAT5 cable to the LINK OUTPUT

connection.

3. Apply power. The LED should light and video should appear on the

display (make sure display is powered ON).

4. Adjust video levels and skew compensation per appropriate receiver

manual.

4.2 Connections on the Single-Port VGA/RS-232

The Single-Port Cobra TS2 CAT5 Video System with RS-232 supports video

and full-modem serial (RS-232) signals over CAT5 cable. You can also use

the transmitters and receivers to make video-only connections without serial

communications. Figure 1 shows the Single-Port Cobra TS2 CAT5 Video

System with RS-232 Transmitter connections.

Figure 1: Connecting the Cobra TS2 with Audio

NOTE

Serial communication mode is unidirectionally broadcast when using

transmitters and daisy-chained receivers. In this mode, all other devices

must be of the simplex serial type. For more information, contact Technical

Support.

Solutions to Common Problems

5 Solutions to Common Problems

In most cases, nearly every issue with the Cobra TS2 CAT5 Video System

can be resolved by checking the CAT5 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.

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Problem:

No video signal at the transmitter local port or at the receiver.

Solution:

Check that both units are powered.

Ensure receiver EQ adjustment is set correctly — turn knob

slowly.

Make sure the CAT5 cable is terminated correctly per the

TIA/EIA 568B wiring specification.

Is the display device powered on and functioning?

Check to ensure display settings (resolution, refresh rate, and so

on) are compatible with input signal.

In some cases, the video termination may be mismatched. The

transmitters and receivers ship with 75-ohm termination as the

default. To disable termination, see Appendix B.

Problem:

Poor video quality.

Solution:

Have all receiver adjustments been finished?

Ensure EQ adjustment is set correctly — turn knob slowly.

Check all cable connections.

The video signal’s refresh rate may be set too high. Reset to a

lower refresh rate in your monitor-configuration menu.

There may be a delay skew issue. See the section on Skew in the

receiver manual.

There may be a DDC compatibility problem. See Appendix G.

Problem:

Poor audio quality.

Solution:

Powered speakers are required. Make sure speaker power is ON.

Check input source levels from the source device. Make sure the

audio source is not overdriven or underdriven.

Audio is summed left and right for “A” versions. If using a single

channel, both audio inputs must be connected at the transmitter

end for full audio gain. Audio is line level.

S2 serial//audio units support full stereo line level. A high

frequency noise may be heard if the cat5 cable from the

transmitter is disconnected, or the transmitter is not powered up.

This is normal and will disappear once a complete link connection

is made.

If Daisy Chaining, audio termination must be removed in DP

units. Only the last receiver requires termination. For S2 units a

special un-terminated version must be used between transmitters

and the last receiver with a standard End-Of-Line unit installed at

the end. S2 units cannot be terminated/ unterminated in the field.

KRAMER: SIMPLE CREATIVE TECHNOLOGY

Solutions to Common Problems

Problem:

Serial communication doesn’t work correctly.

Solution:

Are the serial devices connected properly? Are the serial

parameters correct for source/destination devices?

Are the serial cables terminated correctly? If a null-modem cable

is used, it must be placed at the receiver end.

When using RS-232 transmitters or receivers in daisy chains, Cat5

switches, Cat5 distribution amps, or Multi-output transmitters, the

serial signal is a unidirectionally broadcast mode only. In this

mode, all other Cobra CAT5 Video System devices must be the

simplex serial type. For assistance, contact Technical Support.

The last device in a T4 transmitter or daisy chain configuration

must be a receiver unit with a terminated serial board. See

Appendix E for Serial board settings.

External switch for last unit in daisy chain.

Problem:

“Green shift” or “green washout” on multimedia signals.

Solution:

The standard video/serial model is designed to function with DC

coupled signals in which the black level is referenced to 0 volts.

Nearly all VGA cards function this way.

Some media servers, however, provide AC coupled signals and

can cause a green color shift in the video. This is a result of the

sync clamping on the red and blue channels of the video/serial

model.

For five-component (RGB/H&V) AC coupled video, the Cobra

CAT5 Video System TS2 Universal transmitter has been designed

with full DC restoration capability.

Solutions to Common Problems

Appendix A Cabling Pinouts

Table 1: HD15 Video Connector PINOUT

Pin RGBHV

(VGA) RGBS RGsB Composite

SVHS

(Y/C)

YUV

1 Red + Red + Red + C+ V+

2 Green+ Green+ Green+ C+ Y+ Y+

3 Blue+ Blue+ Blue+ U+

4 — — —

5 Gnd Gnd Gnd

6 Red- Red- Red- C- V-

7 Green- Green- Green- C- Y- Y-

8 Blue- Blue- Blue- U-

9 — — —

10 Gnd Gnd —

11 Gnd Gnd —

12 — — —

13 H Sync C Sync —

14 V Sync — —

15 Gnd Gnd —

Table 2: Terminal Block PINOUT

PIN Audio S2 Audio* Simplex

Serial

SPDIF Audio

Composite

Video

Pin 1

Left Channel Left Channel Tx Signal + Signal +

Pin 2

Ground Ground ground Signal - Signal -

Pin 3

Right Channel Right Channel - - -

Pin 4

- Shell - -

*S2 audio channels are reversed at the receiver end. Left audio is on pin 3 and

right audio is on pin 1.

KRAMER: SIMPLE CREATIVE TECHNOLOGY

Solutions to Common Problems

Appendix A Cabling Pinouts

Table 3: DB9 Female Serial connector

Pin Full Duplex

3 wire (S2) Simplex

1 DCD

2 RX RX

3 TX TX TX

4 DTR

5 Ground Ground Ground

6 DSR

7 RTS

8 CTS

9 RI

Table 4: T568B CAT5 PINOUT

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