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Kramer Cobra R1300A, User Manual

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Kramer Cobra R1300A User Manual Download Page 16

KRAMER:  SIMPLE CREATIVE TECHNOLOGY

 

Solutions to Common Problems 

 

14 

Appendix D Setting Sync Mode 

The 

Cobra R1300A / R1300S2 / R1300S2M

 has the capability for fixed and 

agile sync. The default sync mode setting is for agile sync which replicates 

the source sync polarity signals. However some displays require a fixed sync 

polarity that is not possible to change at the video source. 
The following details jumper settings to change the sync polarity of the 

horizontal and vertical sync signals (

note that jumpers JP6 and JP7 have no 

affect in agile mode

): 

 

 

 

Summary of Contents for Cobra R1300A

Page 1: ...Kramer Electronics Ltd USER MANUAL Models Cobra R1300A Video Audio Receiver Cobra R1300S2 Universal Receiver Cobra R1300S2M Universal Receiver ...

Page 2: ...s to Common Problems 8 6 Technical Specifications 16 Figures Figure 1 Transmitter Connections 5 Figure 2 Cobra R1300A Video Audio Receiver Connections 5 Figure 3 Transmitter Connections 6 Figure 4 Cobra R1300S2 Universal Receiver Connections 6 Figure 5 Adjustment locations 7 Figure 6 Skew Module 15 Tables Table 1 HD15 Video Connector PINOUT 10 Table 2 Terminal Block Connection 10 Table 3 DB9 Video...

Page 3: ...t must be Cobra R1300S2M receivers The R1300A receiver can be used as either a middle unit or an end unit The Kramer Cobra R1300A Video Audio Receiver Cobra R1300S2 Universal Receiver and Cobra R1300S2M Universal Receiver feature optional integrated skew compensation that can be varied in 2 ns increments to 65 ns total per color channel to cancel the effects of skew in Category cables This feature...

Page 4: ... 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 sp...

Page 5: ...t1 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 ...

Page 6: ... At the transmitter end refer to the transmitter user guide 1 Connect the source video to the Cobra Series transmitter video input port which is an HD15 connector labeled SOURCE IN or VIDEO IN 2 If desired attach a local monitor via the local monitor port to LOCAL OUT 3 Make your audio serial connections via the audio connector or DB9 connector as appropriate 4 Connect the CAT 5 cable to the trans...

Page 7: ...ons on the Single Port VGA Audio The single port units with audio support video and audio signals over CAT 5 cable The audio signal is line level summed Right Left audio and powered speakers are required You can also use the transmitters and receivers to make video only connections without audio Figure 1 shows the Single Port Cobra CAT 5 Video System with Audio Transmitter connections and Figure 2...

Page 8: ...n modem signals are not supported Note when using the Cobra 2 S2 series with a Cobra CAT 5 DA or CAT 5 matrix switch the serial is transmit only There are no configuration changes required to the units The serial application in use should be changed to transmit only Audio is full stereo line level One or two separate channels of mono audio may also be used See the Figures below for cabling connect...

Page 9: ...ox just disappears The brightness in the white area should be the same as the white area above and below the black box Continue turning the knob for best picture quality Note that if the EQ setting is too high or too low you may not get an image Adjust the EQ settings until an image appears and then adjust for best picture quality 3 Press and hold briefly and then release the EQ Skew knob until th...

Page 10: ...tment is set correctly turn knob slowly Make sure the CAT 5 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 etc are compatible with input signal Problem Poor video quality Solution Have all receiver adjustments been finished Ensure EQ adjustment switches are set correct...

Page 11: ...prevent audio and serial signals from operating correctly R1300S2 R1300S2M Receivers cannot be modified in the field 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 ...

Page 12: ... Gnd Gnd 11 Gnd Gnd 12 13 H Sync C Sync 14 V Sync 15 Gnd Gnd Table 2 Terminal Block Connection PIN Audio Audio Simplex Serial S PDIF Audio Composite Video Pin 1 Left Channel Right Channel Tx Signal Signal Pin 2 Ground Ground ground Signal Signal Pin 3 Right Channel Left Channel Pin 4 Shell Note Typically Channel 1 is left audio and Channel 2 is right audio series RECEIVER units use Channel 1 for R...

Page 13: ...on Problems 11 Appendix A Cabling Pinouts Table 3 DB9 Video Connector PINOUT Pin Full Duplex 3 wire SA SAP 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 CAT 5 PINOUT ...

Page 14: ...0A Video and the Audio Receiver Cobra R1300S2 Universal Receiver are typically pre configured at time of order and will have factory configuration indicated on the bottom of the unit The factory configuration may be changed or checked by using the following jumper location diagram as well as Table 5 for jumper settings ...

Page 15: ...OFF OFF OFF OFF Composite S Video Component Video see note below on daisy chaining With Left Right Line Level Audio 1 2 1 2 1 2 1 2 OFF ON ON OFF OFF OFF OFF With SDPIF Digital Audio 1 2 1 2 1 2 1 2 OFF ON OFF OFF OFF OFF ON With Simplex Serial receive only 1 2 1 2 1 2 1 2 ON OFF OFF OFF OFF ON OFF With Composite Video 1 2 1 2 1 2 1 2 OFF ON OFF OFF OFF OFF ON With RS 232 serial series requires se...

Page 16: ...nc The default sync mode setting is for agile sync which replicates the source sync polarity signals However some displays require a fixed sync polarity that is not possible to change at the video source The following details jumper settings to change the sync polarity of the horizontal and vertical sync signals note that jumpers JP6 and JP7 have no affect in agile mode ...

Page 17: ...pensation module 1 Remove top cover 2 Remove the 3 jumpers from J16 pins 1 2 4 5 7 8 3 Insert the Skew assembly onto the PCB using 11 pin headers J16 and J17 4 The correct orientation of the skew board is to place the side with the logo into header J17 5 Reassemble unit Removal is the opposite of the above Ensure 3 jumpers are installed in locations shown in Figure 6 Figure 6 Skew Module ...

Page 18: ... Hz REQUIRED SOURCE IMPEDANCE Video OUT 75 ohms Audio OUT if any 600 ohms maximum REQUIRED DESTINATION IMPEDANCE Video IN 75 ohms Audio models Audio IN if any 600 ohms minimum AUDIO CHARACTERISTICS R1300A Right Left summed R1300S2 Full Stereo Line Level 600 Ohm Unbalanced SERIAL CHARACTERISTICS 3 wire fixed baud rate of 9600 CONNECTORS 1 4 pin terminal block 2 RJ 45 1 HD15 F 1 DB9M model dependent...

Page 19: ...17 ...

Page 20: ...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 Caution Safety Warning Disconnect the unit from the power supply before opening servicing ...

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