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KRAMER:  SIMPLE CREATIVE TECHNOLOGY

 

Overview 

 

3  Overview 

Our Kramer 

Cobra

 series products are compatible with CAT 5/5e/6 data 

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

applications. Note that some skew free CAT 5 is specific to a particular 

vendor and is not compatible with our products. Ensure any skew free CAT 5 

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). 
CAT 6 cable, due to the manufacture method, can exhibit much greater skew 

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

standard product offers. Contact Kramer Electronics for assistance. 
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. 
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 T2 

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

1

 

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 

Summary of Contents for Cobra T2

Page 1: ...Kramer Electronics Ltd USER MANUAL Model Cobra T2 Video RS 232 Transmitter...

Page 2: ...Setting Sync Signal Output Termination 9 Figure 3 DC Restore AC Coupling Options 10 Figure 4 Cobra T2 Jumper Locations and Settings 11 Figure 5 Receiver Mounting Bracket 15 Figure 6 Mounting Bracket...

Page 3: ...ransmitter and this user manual2 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 sa...

Page 4: ...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 pro...

Page 5: ...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 transmi...

Page 6: ...nections on the Single Port VGA RS 232 The Single Port Cobra T2 CAT 5 Video System with RS 232 supports video and full modem serial RS 232 signals over CAT 5 cable You can also use the transmitters an...

Page 7: ...h 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 kno...

Page 8: ...m devices must be the simplex serial type For assistance contact Technical Support See Appendix E for Serial board settings External switch for last unit in daisy chain Problem Green shift or green wa...

Page 9: ...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 S PDIF Audio Composite Vide...

Page 10: ...Solutions to Common Problems 8 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...

Page 11: ...board The settings disable enable the 75 ohm termination on individual units For instance changing a transmitter termination affects the local monitor port only it doesn t affect the receivers Conver...

Page 12: ...nels in the Cobra The CobraT2 transmitter has been designed with full DC restore capability A simple switch setting is all that is required The following diagrams show the switch location and settings...

Page 13: ...e configured at time of order and will have factory configuration indicated in the part number label on the underside of the unit The factory configuration may be changed or checked by using the follo...

Page 14: ...talled 1 Off 2 Off 3 Off 4 Off 1 Off 2 Off 3 Off 4 Off 1 Off 2 Off 3 Off 4 Off 1 ON 2 ON 3 ON 4 Off Composite S Video Component Video With Left Right Line Level Audio 1 Off 2 ON 3 Off 4 Off 1 ON 2 ON...

Page 15: ...e configured for various serial modes The SDB hardware configuration is done via jumper settings These jumpers are used to set the various modes of operation As shown below Both ends must be set the s...

Page 16: ...3 4 OUT 5 6 OUT 7 8 OUT 9 10 IN 2 Full Duplex 2 way Short 500 ft 19 2K 1 2 See Notes 3 4 See Notes 5 6 OUT 7 8 OUT 9 10 OUT 1 2 IN 3 4 OUT 5 6 OUT 7 8 IN 9 10 OUT 3 Full Duplex 2 way Long to 1000 ft 1...

Page 17: ...holds four units in a 19 x 1U rack Not shown are brackets for 8 units and brackets for series receivers and transmitters The 8 Unit Rackmount Bracket holds the mounted units like the 4 Unit Rackmount...

Page 18: ...the source sync polarity signals However some displays require a fixed sync polarity that is not possible to change at the video source NOTE Both transmitter and receiver must have the same settings...

Page 19: ...IMPEDANCE Video IN 75 ohms SERIAL CHARACTERISTICS Protocol Asynchronous transparent to data format transparent to data rates up to 19 2 kbps full duplex data rates to 115 kbps simplex half duplex mod...

Page 20: ...KRAMER SIMPLE CREATIVE TECHNOLOGY 18...

Page 21: ...or 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 commen...

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