Go to page of
A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of Kramer Cobra-T2, along with an item. The lack of an instruction or false information given to customer shall constitute grounds to apply for a complaint because of nonconformity of goods with the contract. In accordance with the law, a customer can receive an instruction in non-paper form; lately graphic and electronic forms of the manuals, as well as instructional videos have been majorly used. A necessary precondition for this is the unmistakable, legible character of an instruction.
What is an instruction?
The term originates from the Latin word „instructio”, which means organizing. Therefore, in an instruction of Kramer Cobra-T2 one could find a process description. An instruction's purpose is to teach, to ease the start-up and an item's use or performance of certain activities. An instruction is a compilation of information about an item/a service, it is a clue.
Unfortunately, only a few customers devote their time to read an instruction of Kramer Cobra-T2. A good user manual introduces us to a number of additional functionalities of the purchased item, and also helps us to avoid the formation of most of the defects.
What should a perfect user manual contain?
First and foremost, an user manual of Kramer Cobra-T2 should contain:
- informations concerning technical data of Kramer Cobra-T2
- name of the manufacturer and a year of construction of the Kramer Cobra-T2 item
- rules of operation, control and maintenance of the Kramer Cobra-T2 item
- safety signs and mark certificates which confirm compatibility with appropriate standards
Why don't we read the manuals?
Usually it results from the lack of time and certainty about functionalities of purchased items. Unfortunately, networking and start-up of Kramer Cobra-T2 alone are not enough. An instruction contains a number of clues concerning respective functionalities, safety rules, maintenance methods (what means should be used), eventual defects of Kramer Cobra-T2, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Kramer service. Lately animated manuals and instructional videos are quite popular among customers. These kinds of user manuals are effective; they assure that a customer will familiarize himself with the whole material, and won't skip complicated, technical information of Kramer Cobra-T2.
Why one should read the manuals?
It is mostly in the manuals where we will find the details concerning construction and possibility of the Kramer Cobra-T2 item, and its use of respective accessory, as well as information concerning all the functions and facilities.
After a successful purchase of an item one should find a moment and get to know with every part of an instruction. Currently the manuals are carefully prearranged and translated, so they could be fully understood by its users. The manuals will serve as an informational aid.
Table of contents for the manual
-
Page 1
Kramer Ele ctronics, Ltd. USER MANUAL Model: Cobra T2 Video / RS-232 Transmitter[...]
-
Page 2
Contents i Contents 1 Introduction 1 2 Getting Started 1 3 Overview 2 4 Setup and Installatio n 3 4.1 Making the Connections 3 4.2 Connections on the Single-Port VGA/RS-232 4 5 Solutions to Co mmon Problems 5 6 Technical Specificatio ns 17 Figures Figure 1: Connecting the Cobra T2 4 Figure 2: Setting Sync Signal Output Termination 9 Figure 3: DC Re[...]
-
Page 3
Introduction 1 1 Introduction Wel com e t o K ram er Ele ct ron ics (s in ce 1 981) : a w orl d o f u ni que , c re ativ e and aff or dabl e s olu ti ons to th e inf init e rang e of pr obl ems th at c onf ron t th e v ide o, au dio an d p res ent ati on prof es sion a l on a da i ly ba s i s . In rec en t yea rs , w e ha v e red es igne d an d up [...]
-
Page 4
KRAMER: SIMPLE CREATIVE TECHNOLOGY Overview 2 3 Overvie w Our Kramer Cobra ser ies products are c ompatible with C AT 5/5e/6 data cabling as well as ske w free CAT 5 /5e cabling manufactured for video applications. Note that so me skew free CAT 5 is specific to a particular vendor and is not co mpatible with our pro ducts. Ensure an y skew free CAT[...]
-
Page 5
Setup and Installation 3 4 Setup and Insta llation Data Mode Co nfiguration The Kr ame r C ob ra T 2 Video / RS- 232 Transmitter s are con figured in full modem bidirectional serial mod es. If you are using the d aisy chain receivers or a CAT 5 matrix switch or CAT 5 distribution amp, t his mode must be changed to uni-directio nal broad cast. To do[...]
-
Page 6
KRAMER: SIMPLE CREATIVE TECHNOLOGY Setup and Installation 4 At the receiver end (refer to the receiver user manual): 1. Connect the VIDEO O UTP UT HD15 connector to the display unit, and attach any audio ( AUX I/O) and/or serial connections (R S-232) depending on the model of the Co b ra CAT 5 Video System. 2. Connect the CAT 5 cable to the LINK IN[...]
-
Page 7
Solutions to Common Problems 5 5 Solutions to Co mmon P roblems In most cases, nearly ever y issue with the C ob ra T 2 CAT 5 Video S ystem can be resolved b y checking the CAT 5 termination and making sure that it’s pinned to the TI A/EIA 568B wiring specif ication. Howe ver, there may be other prob lems that cause the system to not perform as i[...]
-
Page 8
KRAMER: SIMPLE CREATIVE TECHNOLOGY Solutions to Common Problems 6 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 receive r[...]
-
Page 9
Solutions to Common Problems 7 A ppendix A Cabling Pin outs Table 1: HD15 Video Connector PINOUT Pi n RG BHV ( VG A) RG BS RG s B Co mpo si te SV HS (Y /C ) YU V 1 Re d + Re d + Re d + C+ V+ 2 G re en + G re en + G re en + C+ Y+ Y+ 3 Bl ue+ Bl ue+ Bl ue + U+ 4 — — — 5 G nd G nd G nd 6 Re d- Red - Re d- C- V- 7 G re en - Gre e n- G re en - C- [...]
-
Page 10
KRAMER: SIMPLE CREATIVE TECHNOLOGY Solutions to Common Problems 8 A ppendix A Cabling Pin outs Table 3: DB9 Female Serial connector Pi n Fu ll Dup le x 3 w ire ( S2) Si m pl ex 1 DC D 2 RX RX 3 TX TX TX 4 DT R 5 Gr ou n d Gr ound G ro un d 6 DS R 7 RT S 8 CT S 9 RI Table 4: T568B CAT 5 PINOUT[...]
-
Page 11
Solutions to Common Problems 9 A ppendix B Setting Syn c Signal Outpu t Termi nation In some cases, it may be necessar y to disable the 75-oh m termination o f the video outputs on the Cobra CAT 5 Video System units. T his can be done b y opening the case o f each unit and installing ju mpers on the circ uit board. The settings disable/enable t he [...]
-
Page 12
KRAMER: SIMPLE CREATIVE TECHNOLOGY Solutions to Common Problems 10 A ppendix C DC Rest ore to fix G reen Shift of A C Coupled Signals The standard Co bra product is desig ned to function with DC coupled signal s with the black level refere nced to 0 volts. Near ly all VGA cards function this way. However, so me media servers or digital camera devic[...]
-
Page 13
Solutions to Common Problems 11 A ppendix D Cobra T2 Co nfiguration Sett ings Note: Cobra tr ansmitters are typicall y pre-configured at time of order and will have factor y configuration indicated i n the part nu mber label on the underside of the unit. The factory configuratio n may b e changed or checked b y using the follo wing jumper location [...]
-
Page 14
KRAMER: SIMPLE CREATIVE TECHNOLOGY Solutions to Common Problems 12 Table 5: Cobra T2 Configuration Jumper Settings Co nfi g ur a ti o n O pt ion ( al l op tio n s u til iz e 4 th pa ir, ex cep t s p ec ial co nfi g ur a ti o n s) : S W1 SW2 S W3 S W 6 RG BHV Co mput er Vid eo Wit h Le f t/ Rig ht L in e L e ve l A ud io 1 O f f 2 O N 3 O f f 4 O f [...]
-
Page 15
Solutions to Common Problems 13 A ppendix E Serial Daug hterboard (SDB ) Settin gs The single-port serial tr ansmitters and single-port and d ual daisy chainable serial receivers contain a n internal serial dau ghterboard (SDB) that can be configured for vario us serial modes. The SDB hard ware configuration is d one via jumper setti ngs. T hese ju[...]
-
Page 16
KRAMER: SIMPLE CREATIVE TECHNOLOGY Solutions to Common Problems 14 A ppendix E Serial Daug hterboard (SDB ) Settin gs, cont The single-port serial tr ansmitters and single-port and d ual daisy chainable serial receivers contain a n internal serial dau ghterboard (SDB) that can be configured for vario us serial modes. Table 6: Receiver SDB Jumper Se[...]
-
Page 17
Solutions to Common Problems 15 A ppendix F Rackmoun ting Units The Rackmount Kits i nclude brackets for mounting a single t ransmitter, single receiver, or a single dual dais ychainable receiver. Figu re 5 sho ws the 1-Unit Rackmount B racket , which can be used to mount a single unit on a wall. Figure 6 sho ws the 4-Unit Rackmo unt Bracket, whic [...]
-
Page 18
KRAMER: SIMPLE CREATIVE TECHNOLOGY Solutions to Common Problems 16 A ppendix G Setting Sy nc Mode The Cobra T2 has the capability for fixed a nd agile sync. The d efault sync mode setting is for agile sync which re plicates the source s ync polarit y signals. Ho wever some displays require a fi xed sync polarit y that is not possible to change at t[...]
-
Page 19
Technical Specifications 17 6 Technical Spec ifications Table 7: Technical Specifications 1 of the Cobra T2 CA BLE RE Q UI RED: Ca tegor y 5, 5e , 6 shi elde d or un shi eld ed tw ist ed p ai r CO M PLI AN C E: CE; F CC C lass A , I C C lass /c lass A VI DEO SU P PO RT: VGA , S VG A, X GA, X GA-2, RG BH V, RGB, Co mpos ite, S-V ideo , Comp onen t V[...]
-
Page 20
KRAMER: SIMPLE CREATIVE TECHNOLOGY 18[...]
-
Page 21
Kramer Electron ics, Ltd. Web site: www.kramerelectronics.co m E-mail: info@kramerel.com P/N: 2900-650006 REV 3 For the latest in formation on ou r products and a list o f Kramer distributors, visi t our Web site: www.kra merelectr onics.com, where updates to this user manua l may be foun d. We welcome you r questions, co mments and feedback. Cauti[...]