VISTEK V1682, Installation And Operational Manual

Page 1: ...82 VALID READER INSTALLATION and OPERATION Vistek Electronics Ltd Filename V1682OPMA doc Issue A Date February 2005 VISTEK Electronics Ltd Wessex Rd Bourne End Buckinghamshire SL8 5DT ENGLAND Tel 44 1...

Page 2: ...13 3 1 6 Variable Calibration 13 4 Making measurements 15 4 1 Introduction 15 4 2 Video Input 15 4 3 Audio Input 16 4 4 MAL Maximum Analogue Level Setup 16 4 5 Reading Measurements From Front Panel 1...

Page 3: ...Y 17 8 3 ANALOGUE AUDIO SUB MODULES 17 8 3 1 DAC 17 8 3 2 ADC 17 9 CONFIG MENU 17 10 FRONT PANEL MENUS 17 11 CONTROLs 17 11 1 VALID Measurements MEASURE 17 11 2 On Screen Display Controls VID OSD 17 1...

Page 4: ...vided on the front panel indicating the audio video delay in milliseconds the originating channel and a warning if a channel is inverted The unit may take its audio input from an AES or analogue input...

Page 5: ...connectors but not all signals are available This manual has generally been written assuming that one of the L type rear panels is being used with access to all signals 2 1 3 U REAR PANELS For the 3U...

Page 6: ...ions but at the expense of losing some signals Connection details are given in section 2 3 2 3 CONNECTIONS 2 3 1 SDI BNCs On all the rear panel types the upper three BNCs are for SDI video as follows...

Page 7: ...n Signal Pin Signal Pin Signal Analogue Digital Analogue Digital Analogue Digital 15 GND GND 30 GPI_3 GPI_3 14 ALinP AESAinP 29 GND GND 44 ALinN AESAinN 13 ARinP AESAin75 28 GND GND 43 ARinN AESAin0 1...

Page 8: ...rate 32 48kHz Output Sample rate 48kHz AES Reference Balanced Zin 110 or HI Z Sample rate 48kHz AES Reference Unbalanced Zin 75 or HI Z Sample rate 48kHz ID SYNC 75 TTL 75R Positive pulse high during...

Page 9: ...o reset the internal micro controller and DSP SKT 1 Audio Sub module Various sub modules are available for the different audio options See section 2 7 PL 3 JTAG Connector For development and test use...

Page 10: ...the menu system may seem cumbersome but with only a small amount of practice it will become very easy to use 2 6 1 Direct Indications The four LEDs at the top of the panel provide these direct indica...

Page 11: ...nd if not then the others show which direction to which it has been changed or that it is no longer on its CAL value 2 6 3 Remote Local Control The lowest switch selects between Local control and Remo...

Page 12: ...Upper Case Sub Menu Menu items under each main heading such as Aud I P or Mux Grp under the AUDIO main menu These items are all in Sentence Case generally lower case but with upper case first letters...

Page 13: ...e unit is set up to generate a VALID test signal However there is no direct indication as to the format the SDI input i e 625 50 or 525 60 Since many installations may use multiple formats and therefo...

Page 14: ...e of making timing measurements even when the video from the V1681 has been reduced to any size down to screen with any additional stationary content in the picture as long as all but the VALID test s...

Page 15: ...ing and source information is however also available for quick access at the top level of the menu tree 4 5 1 Quick Access For quick access to delay and source information press when at the top level...

Page 16: ...elow Audio levels may be read under the MEASURE Aud Lev menu All level measurements are in dBu relative to 0 775mV RMS It should be noted that the level reading is always in dBu even if the input is d...

Page 17: ...2 Figure 4 4 are shown the delay source display in various states Figure 4 2 shows the system operating correctly with audio and video synchronised and all four audio inputs fed by the correct V1681...

Page 18: ...IEC 60268 10 Type IIb is provided on the right hand side of the on screen display The meter has a fixed range of 14 to 14 dBu with scale markings at 4 dBu intervals as shown Figure 4 5 The green to ye...

Page 19: ...ain analogue or digital more importantly the levels are effected by the MAL Maximum Analogue Level setting if a digital input format is being used For more information on MAL see Sec 4 4 The V1681 gen...

Page 20: ...ule AES analogue or through an embedded audio channel The audio input to the unit is set up in the AUDIO Aud I P menu which will have the following options dependent on the sub module fitted if any Mo...

Page 21: ...either basic 20 bit form or in extended 24 bit form The embedding resolution can be controlled in the ENG ING Aud Bits menu in which the options are 20 or 24 bit All internal audio processing is done...

Page 22: ...is no ability to blank only some lines Lines which are blanked Format VBI Lines 525 60 1 to 20 264 to 282 625 50 624 to 6 311 to 318 6 3 ANCILLARY BLANKING The ancillary data space may be blanked if n...

Page 23: ...is information is also echoed in the STATUS Mod I Ps and Mod O Ps menus 7 3 INPUT STATUSES The status of all inputs other than analogue may be checked within the STATUS menu The SDI input can be monit...

Page 24: ...on selected group DMX 20bt 20 bit audio being de muxed from selected group DMX 24bt 24 bit audio being de muxed from selected group 7 7 MULTIPLEXER STATUS The status of the audio multiplexer is avail...

Page 25: ...1 March 2005 V1682OPMA doc Page 25 of 32 STATUS Videover 0 00 00 The Video FPGA data...

Page 26: ...o sleep mode When the calibration mode is on then the unit will automatically set up the required conditions in the unit as you enter each sub menu For example if you go into the CntrFreq sub menu the...

Page 27: ...AC By turning Calibrate Mode ON and selecting one of the DAC sub menus the unit will automatically generate tone with an MAL of 18dBFS To calibrate the frequency set the unit to generate Tone by turni...

Page 28: ...contains has no user adjustable controls The only function of this menu is to set the unit into a diagnostic test mode In order for the unit to be put into test mode a password is required This shoul...

Page 29: ...L stat BR stat MEASURE VID OSD AUDIO STATUS ENG ING CALIB CONFIG Aud A VALIDMtr Aud I P Sub Mod VBI Cal Mode Password Aud B SDI Src Mux Grp Mod I Ps Anc Data CntrFreq TestMode Aud Lev Mute Mod O Ps Au...

Page 30: ...delayed 40ms with respect to vid AR 0023 Channel A right is leading video by 23 ms AR AL Aud A AL AR AL input inverted Left Right swap over on channel A BL 0000 BR 0000 Lip synch correct AL BL MEASURE...

Page 31: ...is occupied 3 SDI input has Group 3 only is occupied 4 SDI input has Group 4 only is occupied I P Grps 2 4 Group 2 and 4 for example occupied No DMX DMX 20bt DMX Aud DMX 24bt MUX OK Mux Grp MUX over G...

Page 32: ...28 0 n DAC A R 127 128 0 n DAC B L 127 128 0 n 127 DAC B R 128 0 n ADC A L 127 128 0 n ADC A R 127 128 0 n ADC B L 127 128 0 n CALIB ADC B R 127 11 7 CONFIGURATION CONFIG On n Banner Off Password 0 Of...