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VISTEK V1626

DIGITAL TO ANALOGUE

CONVERTER USER GUIDE

www.pro-bel.com

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Summary of Contents for V1626

Page 1: ...1 VISTEK V1626 DIGITAL TO ANALOGUE CONVERTER USER GUIDE www pro bel com...

Page 2: ...Controls 6 3 ON BOARD CONTROLS ADJUSTMENTS 7 3 1 Main Board 7 3 2 Matrix Sub board 9 4 CALIBRATION OF V1626 DAC MODULE 10 4 1 Introduction 10 4 2 Test Equipment 10 4 3 Environmental 10 4 4 Calibration...

Page 3: ...hese may be configured as either an extra set of Y Pb Pr or three spare serial SDI outputs Remote control interface is available for communication between modules within the frame and others outside i...

Page 4: ...unit follow the instructions below Rear I 0 modules Remove the screws from the blanking plate covering the spare position at the rear of the equipment and remove the plate Place the new rear module i...

Page 5: ...y terminated with 75 Ohms The Serial Digital Input should be connected to this BNC Serial Digital Output SD1 OUT Active loop through output from SD IN Serial Digital Outputs SD2 OUT SD4 OUT Serial dig...

Page 6: ...m communications link is accessing the module The 525 lamp indicates that the unit is working in 525 mode and is locked to 270 Mb s serial digital input signal The 625 lamp indicates that the unit is...

Page 7: ...S 3 1 Main Board Locations of switches and Preset potentiometers are shown in the figure below To gain access to these controls and adjustments the board must be removed from the chassis If the adjust...

Page 8: ...b c Sub module output if fitted YPbPr outputs from main board SW5 Up b c Down a b Spare Y N10 output Spare re clocked SDI output SW6 Up b c Down a b Spare Pb N10 output Spare re clocked SDI output SW...

Page 9: ...evel Pb and Pr are not adjustable on the sub board VR5 adjusts the pedestal on the 525 Betacam signal VR2 VR3 and VR4 adjust the G B R output levels Switch Position Function SW1 b c a b Syncs on Green...

Page 10: ...ment 100 MHz dual channel oscilloscope Tektronix TSG 422 10 bit serial test signal generator Tektronix WFM601i Serial signal analyser Tektronix 1781 test set Digital multimeter Standard RS trim tool 4...

Page 11: ...pe adjust VR5 VCO centre frequency until lock is achieved without data errors A method for setting the VCO centre frequency is described in the Gennum 1994 Data book page 2 47 Tune the potentiometer V...

Page 12: ...st the syncs amplitude pot VR7 for 300 mV p p of syncs Monitor the Pb output using the 1781 measurement set Adjust the front panel Pb gain control pot VR3 for an amplitude of 700 mV peak to peak Monit...

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