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GUIDE TO INSTALLATION AND OPERATION 

2

 | DEC-291p 

2.0   Physical Layout 

 
Figure 2 illustrates the DEC-291p’s major parts and their 
locations. The video source is connected to the composite input 
BNC and the decoded signal is provided by the SDI output.  
Error status is provided by the status LED and mode settings are 
configured by two 3-position slide switches. Finally, the power 
source is connected to the power connector. 
 

SDI output

Power connector

Composite input

Status LED

(underneath)

3-position slide switches

 

Figure 2:  Layout of the DEC-291p  

 

Summary of Contents for dec-291p

Page 1: ......

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Page 3: ...1 0 DEC 291p 12 bit NTSC PAL SECAM to SDI decoder 1 1 1 Introduction 1 1 2 Features 1 2 0 Physical Layout 2 3 0 Installation 3 3 1 Power Supply 3 3 2 Composite Input 3 3 3 SDI Output 3 4 0 Operation 4 4 1 Switch Settings 4 4 2 Status LED 5 5 0 Specifications 6 ...

Page 4: ...GUIDE TO INSTALLATION AND OPERATION DEC 291p ...

Page 5: ...line formats from incoming composite video signals and provides the appropriate serial SDI output format Its simplified design makes it easy to install and operate Decoder COMPOSITE IN SDI OUT Parallel to serial Figure 1 DEC 291p functional block diagram 1 2 Features Automatic input detection of NTSC PAL and SECAM composite signals SDI output Superior quality 12 bit processing Input setup selectio...

Page 6: ...the composite input BNC and the decoded signal is provided by the SDI output Error status is provided by the status LED and mode settings are configured by two 3 position slide switches Finally the power source is connected to the power connector SDI output Power connector Composite input Status LED underneath 3 position slide switches Figure 2 Layout of the DEC 291p ...

Page 7: ...nector for its power needs Figure 3 shows a detailed pinout of the male connector 1 3 2 male connector facing Pin 1 Shield Pin 2 GND Pin 3 5 VDC Figure 3 Power connector pinout 3 2 Composite Input Connect an NTSC PAL PAL M PAL N or SECAM composite signal conforming to the SMPTE 170M or ITU R BT 470 6 standard respectively to the BNC labeled COMPOSITE IN 3 3 SDI Output The SDI serial digital output...

Page 8: ...TE IN SDI OUT Status LED Figure 4 DEC 291p slide switch and LED locations Input setup switch SW1 7 5 IRE For composite sources with 7 5 IRE setup set SW1 to this position 7 5 IRE same as above on this 3 position switch 0 IRE For composite sources with 0 IRE setup set SW1 to this position Input stability switch SW2 VTR Select this position for non time base corrected sources Tuner Decoding of satel...

Page 9: ...d status LED identifies the presence of input errors Possible indications are Green Indicates the DEC 291p is powered and has detected a valid composite signal at the input Red Indicates that the input is in error no input signal has been detected an invalid input signal has been detected Off The DEC 291p is not connected to a power supply ...

Page 10: ...ignal SDI SMPTE 259M C 270 Mbps Return loss 15 dB up to 270 MHz Jitter 10 ns p p Connector 75 Ω BNC Processing performance Signal Path 10 bit Quantization 12 bits Processing delay 3 2 us Sampling 54MHz 4x oversampling Electrical Voltage requirement 5 VDC Power consumption 1 5 W Power connector Mini XLR 3 Mechanical Overall size 102 mm x 25 mm x 18 mm 4 x 1 x 0 7 Power cable length 127 mm 5 Full sp...

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