Lexicon LFI-10 User Manual Download Page 37 | Manualshive

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Summary of Contents for LFI-10

Page 1: ...User Guide LFI 10 Digital Audio Format Interface lexiCOn...

Page 2: ...his accompanying litera that may be sufficient to constitute a ture risk of shock Notice This equipment generates and uses radio frequency energy and if not installed and used properly that is in stri...

Page 3: ...kumenloinnissa esiintyy tarkeita k iiytto js yllapito ohieita Norsk Vlklig Informasjon om slkkerhet Ta vara pA denne veiledningen for senere bruk F01g alia anvisningene og advarslena som er angitt pA...

Page 4: ...rete Importantes Gardez ces instructions pour reference future Observez toutes les instrucUons et tous les avertissements marques sur I apparei Branchez uniquements sur un reseau de tension indiquee C...

Page 5: ...hannel Status AES User Data SDIF 2 Data Viewing the Incoming Data 3 10 Specifying the Output Data 3 12 Selecting the Output Format Altering the Output Data Altering AES and S PDIF Channel Status Data...

Page 6: ...Lexicon...

Page 7: ...ny target device should be obtained from the manufacturer Lexicon has attempted to provide correct information and functional capability corresponding to digital audio standards known and available to...

Page 8: ......

Page 9: ...e line cord Connect the cable end of the LFI 1 0 line cord to the LFI 10 power connector Then plug the line cord into an AC wall socket providing voltage corresponding to the data plate on the unit Th...

Page 10: ...ree AES type inputs Display 16 character FIP for Output SELECT Toggles the three available output modes LOOP THRU AES EBU and S POIF See Output detail next page Status LEOs indicate which output mode...

Page 11: ...the quency of the incoming digi LFI 10 The LED in the tal frame rate This LED will CLOCK button lights to indi flash if there is a mismatch cate a mismatch between in between the detected fre put typ...

Page 12: ...e corre sponding bits are set The EMPHASIS LED will be off if the Channel Status block se lected for transmission has emphasis specified as NONE or NI emphasis not indi cated MUTE SELECT D This contro...

Page 13: ...ES EBU ber optic input and output balanced digital input and output The input and output connectors conform to published stan dards for professional and consumer formats The LFI 10 however allows mism...

Page 14: ...Interrace UC Nv j ut l f XLR Pinout 480ULFI 10 SDIF 2 Interface Connections XLA Pinout pin 2 high by convention 480L Connector DE9 Male 1 2 3 5 4 6 7 9 8 DRAIN CHASSIS GND DRAIN CHASSIS GND RIGHT OUT...

Page 15: ...ssemblies S PDIF Consumer Digital Audio I O This interface is unbalanced but because it carries digital signals it requires the use of 75Q RG 59 coaxial cable SDIF 2 SDI F 2 is not self clocking and h...

Page 16: ...1 8 Controls and Connectors Lexicon...

Page 17: ...1111111111111111111111111111111111111111111111111111111111111111111111111 the rate at which samples are taken 111 111I TTT I1w u 11II IIIIII 1 1 T I 1 T IIIII rnT1 11 1111 the sampled audio signal li...

Page 18: ...error Every two seconds one device will have one more or one less sample than the other device This could cause an audible click every two seconds as the receiving device added or dropped a sample Th...

Page 19: ...tinues until information is assigned to every single bit in the block It is the control bits which actually define the format and make sensible communication of data possible Digital audio standards a...

Page 20: ...for the channel specified by the preamble Following the audio sample word are four bits designated as Validity UserData Channel Statusand Parity These four bits are sometimes referred to as carrying...

Page 21: ...w B preamble indicaling beginning of a block Frame 0 channel A to follow v Validity flag IL _____________ JI U User data C Channel status I Frame 191 Frame 2 Frame 1 P Panty bit M Channel A V U CP W C...

Page 22: ...t The Parity bit is for detection of communication errors between two devices The parity bit is set such that the total number of 1 bits in the sub frame is an even number If the receiving device dete...

Page 23: ...al Audio Data AES Channel Status S PDIF Channel Status Professional Use Consumer Use 2 3 4 5 6 7 8 9 Channel destination Byte o 2 3 4 5 6 7 8 9 10 11 12 13 14 UPC EAN code Time of day sample address c...

Page 24: ...256 32 bit words Only the first of these words contains control bits Word 1 2 256 SDlF 2 data structure The timing references selected by different manufacturers can be critical to communication betwe...

Page 25: ...d outgoing audio data In these modes the LFI 1 0 will take digital audio data from one of its four inputs and transmit it to all four outputs The input can be selected from the AES professional XLR or...

Page 26: ...CLOCK button will light as a warning if there is a mismatch between your input and clock selections For example if you are in a unidirectional mode and have chosen an AES type connector and CLOCK is s...

Page 27: ...I Ie r t4 J t iWUt1 i fI i 1 Out AES EBU selected as output format Inl Analog Video In 02 Unidirectional Conversion OPTO In AESIEBU Out DIGITAL MULTI TRACK MACHINE Out SDIF 2 format In Out AES EBU se...

Page 28: ...DIF 2 input as the word clock master Pressing CLOCK will toggle between these two selections Note that the LED in the center of the CLOCK button will never light in bidirectional conversion modes as y...

Page 29: ...EBU format Out In In Source Destination DIGITAL AUDIO EDITOR Bidirectional Conversion SDIF 2 to AESIEBU to SDIF 2 CD Out S PDIF format In Out AES EBU selected as output format In RDAT MACHINE 480L DIG...

Page 30: ...Port In Out PROCESSOR Word Clock delay in CD Mastering music editing setup using 480L as DSP AES EBU format AID Out In CONVERTER In D A 300 CONVERTER 1630 Out CD PLAYER In Out DAT Location or studio...

Page 31: ...Using the LFI 10 CONSUMER DAT Out In OAT to OAT copy via AES or S PDIF with bidirectional conversion to SDIF 2 for DSP with 480L Out In AES Format PRO DAT Out In SDIF 2 format In Out 480L DIGITAL EFFE...

Page 32: ...el Status data and 24 bytes of User data For the SDIF 2 data stream this auxiliary data consists of Emphasis and Dub Prohibit bits A graphic representation of the menu choices is shown on the followin...

Page 33: ...COPYPROHIB CNTRl MODE CATEG CODE l BIT SOURCE NUM CHANNElNUM SAMP FREQ ClOCKACC CODE FORM U ISRC YEAR SERNUM NI I r 1 001 0 NONE 101 50115 CCITT NI 2 CHAN I CHAN PRIM SECND STEREO 0101 1111 44 1K SDI...

Page 34: ...a valid input signal is detected the LFI 1 0 automatically detects the format pro or consumer of the input data and lights the appropriate front panel status LED AES EBU or SI POIF If you have selecte...

Page 35: ...IEW CS SYM then press ENTER The Scroll knob now allows you to view each item and its current setting To view Channel Status data in hex format select VIEW CS HEX then press ENTER Ifthe ENTER key is pr...

Page 36: ...l OUTPUT SELECT button allows you to select the format of the Output Format Channel Status data available at the AES and S PDIF outputs and in the output menu or to pass the auxiliary information from...

Page 37: ...tus of many of the items you will want to alter is available through the front panel status LEOs These provide information that will often eliminate unecessary switching back and forth between the vie...

Page 38: ...he professional or consumer format Editing can be performed symbolically or in hex The Scroll knob lets you select any of these options pressing ENTER will bring up the submenus shown below SET OUTPUT...

Page 39: ...edit incoming data first scroll to COpy INPUT CS and press ENTER This copies the entire input Channel Status block so that you can modify only certain fields while leaving others identical to the inpu...

Page 40: ...of Channel Status information Additional information for the hex user is provided throughout the descriptions where binary information is included please refer to the tables for bit organization FORM...

Page 41: ...pecify the original channel mode encoding as follows NI mode not indicated receiver default to 2 channel mode 2 CHAN 2 channel mode manual override disabled 1 CHAN single channel mode monophonic manua...

Page 42: ...maximum word length is 24 bits audio sample word length is 22 bits If maximum word length is 20 bits audio sample word length is 18 bits 21 17 If maximum word length is 24 bits audio sample word lengt...

Page 43: ...rs available Hex entry provides access to all ASCII characters including illegal entries The table below illustrates those entries which are legal those which are not available in the symbolic menu ar...

Page 44: ...of an AES device containg dynamic SAC can only be transmitted through the LFI 10 in LOOP THRU mode TIME These bits are assigned to carry a 23 bit binary time of day sample address code Entry is in he...

Page 45: ...bit audio sample word length auxiliary sample bits used for main audio sample data undefined WRDLNGTH NI 23 19 22 18 21 17 20 16 24 20 110 111 word length not indicated word length in bits if maximum...

Page 46: ...on of channel and emphasis The available settings are 2 CH 2 audio channels without pre emphasis 2 CH EMPH 2 audio channels with 50 15 1s pre emphasis 010 111 These settings are undefined but reserved...

Page 47: ...r settings are undefined as of this writing SAMP FREQ 44 1 K 44 1 kHz sampling frequency 48 K 48kHz sampling frequency 32K 32kHz sampling frequency 1100 1111 These settings are undefined but reserved...

Page 48: ...RC code consists of 12 characters specified as follows characters 1 2 country code each character is 6 bits coded according to the coding table shown Coding Table 0 000000 1 000001 2 000010 3 000011 4...

Page 49: ...copying of original program material permitted SOURCE NUM O F source number CHANNElNUM 0 A B don t care left channel for 2 channel format right channel for 2 channel format all other setting are undef...

Page 50: ...hex menu move the cursor to the next digit Note Target devices may require or may not not recognize User Data This information should be obtained from the device manufacturer Selecting SET OUTPUT SDI...

Page 51: ...a framing signal when receiving digital audio data Since there is a SDIF 2 signal input which is specified as WORD CLOCK IN many manufacturers assume that this Signal is to be used in determining the...

Page 52: ...Out _ Nominal Bit Cell Width 710ns The LFI 10 has a LOCAL WORD CLOCK which is used as the reference for framing of both receive and transmitted SDIF 2 digital data This LOCAL WORD CLOCK is phase locke...

Page 53: ...or DOUT DEL should be zero The LFI 1 0 will automatically mute the transmitted audio data to zero if no valid input is detected on the AES data stream To turn this function ON or OFF scroll to MISC F...

Page 54: ...either of these choices displayed will cause a submenu with the available presets or registers to appear Scroll to the setup you want to recall and press ENTER This restores the state of the LFI 1 0 t...

Page 55: ...d length use of auxiliary sample bits not defined 24 bit audio sample word length auxiliary sample bits used for main audio sample data reserved for user defined applications WD LNGTH 2 3 5 000 001 01...

Page 56: ...channel for 2 channel formal B right channel for 2 channel formal C I 0 SAMPFREQ 3 0 3 0000 44 1 kHz sampling frequency 0100 48kHz sampling frequency 1100 32kHz sampling frequency CLOCK ACCURACY 3 4 5...

Page 57: ...Following are some of the problems that may occur due to errors in setup or operation of the LFI 1 a Whenever operational problems occur carefully check your entire setup Verify that all connected equ...

Page 58: ...nput or the LFI 10 output consists only of noise SDIF2 PHASE ADJUST needs to be corrected Turn down the volume of any monitoring device during SDIF 2 Phase Adjustment From the main menu use the Scroll...

Page 59: ...ANCEL key will step back only through the Diagnostics menu items it will not return you to the main menu as in normal operating mode To exit Diagnostics mode you must scroll to the last Diagnostic men...

Page 60: ...the operator to check the status of the diagnostic tests shown below REGISTER INIT STATIC RAM TEST AUDIO LOOP CSLOOP USER LOOP CONNECTOR RS232 LOOPBACK REGISTER CHECK PRE BURN IN POST BURN IN Note tha...

Page 61: ...ts on and off indefinitely to allow cycling of display elements during burn in Press CANCEL to exit the test LED Test The LED test allows individual testing of each of the LFI 1 afront panel LEOs When...

Page 62: ...ing count of parity errors The count is reseton power up and wraps around to 00 when OxFFFF is exceeded PARITYO contains the low byte and PARITY1 contains the high byte represented in hex Note that th...

Page 63: ...displays the byte being tested and the value in decimal Status regarding test failures are reported atthe COMM port A balanced cable with a male XLR on one end and a female XLR on the other end is req...

Page 64: ...4 8 Troubleshooting Lexicon...

Page 65: ...put Select Clock Select Output Select Scroll knob used for selecting menu displays Arrowed keys used for selecting menu displays Enter Cancel Store Recall Power Switch RFI Shielding Complies with FCC...

Page 66: ...5 2 Specifications Lexicon...

Page 67: ......

Page 68: ...LexIcOn lnc 100 Beaver Street Waltham Milt 02154 8425 Tel 617 736 0300 Fax 617 891 0340 prjntect in U A Lexicon Part No 07 Q8816 Rev 1...

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