Broadcast evices, Inc. CT-00 Composite ecoder/ AES Generator TECHNICAL REFERENCE MANUAL Broadcast evices, Inc. Crestview Avenue Cortlandt Manor, NY 0 Tel. () -0 Fax. () - REV: A 0/0 www.broadcast-evices.com
Table of Contents The CT-00 Composite ecoder/aes Generator I. Introduction A. Unpacking and Inspection B. General escription II. Specifications III. Installation IV. Warranty V. Schematic iagrams A. Functional iagram B. Setup iagram C. CT-00 Schematics
Introduction The CT-00 Composite ecoder/aes Generator is intended to be used to convert an analog composite base band stereo waveform into a pair of AES digital outputs. The CT-00 will accept the selected composite signal, decode it back to left/right which with proper jumper selection can be routed to the rear panel XLR connectors or convert it to a pair of AES compatible streams suitable for input to digital exciter equipment. Suggested uses include converting any composite stereo generator or STL to an AES signal compatible with modern digital AM/FM digital exciters. Analog output is a balanced + dbm left/right output for analog decoder applications if AES output is not needed. See the setup diagram at rear of this manual for more information. A. Unpacking and Inspection Carefully unpack the unit after receipt and inspect for damage that may have occurred during shipping. If damage is noted, contact the shipper immediately and file a damage claim. The contents of the package have been insured to cover total replacement cost. Make certain that the package contents are the same as noted on the packing slip. If not, contact Broadcast evices, Inc. General escription The CT-00 contains a high quality, phase locked loop stereo decoder, analog to digital converter and AES transmitter. Stereo composite audio is routed to the stereo decoder where it is converted back to analog left/right and then routed to a bit analog to digital converter. The output of the converter is then routed to an AES transmitter/a where it is outputted on a pair of XLR connectors at the rear of the chassis. In this configuration it is possible to drive a pair of digital input exciters simultaneously with the same composite source. It is also possible to output a balanced + dbm left/right output to the XLR connectors if AES output is not needed. Specifications Composite Input Impedance: Output Impedance: Number of outputs: Sample rate: Pre/de emphasis: 00K unbalanced Accepts. Volt RMS composite 0 ohm balanced - digital 00 ohms balanced analog AES or analog left/right,., or KHz 0 or us selectable. II. Installation A. Initial Configuration igital Output. Apply normal composite level audio to the B.N.C. connector input. Connect the AES outputs to suitable AES equipped exciters or BI AES-0 digital audio switcher/a and observe modulation on a suitable modulation monitor. If level adjustment is necessary, there are two options for adjusting level. If the overall level needs adjustment, turn VR up or down as necessary to maintain desired modulation level. If balance between left and right channels is not correct, this can be compensated for by adjusting VR and. VR is left channel and VR is right channel. Refer to the setup diagram at the rear of the manual for location of these controls.. The CT-/SM- is normally shipped from the factory with us pre and de emphasis capability for North American applications and 0 us for European applications. Jumpers JP, are installed for pre emphasis. In the case of 0 us pre emphasis a pair of capacitors is supplied to be placed across JP and JP. These capacitor jumpers are found in a plastic bag inside the unit. For de emphasized or flat frequency response audio output, remove jumpers JP and JP.Pre emphasis is defeated as a factory default.
. Sample rate adjustment. The CT-00 is normally shipped configured for. KHz sample rate. Other sample rates are possible including, and KHz. To adjust sample rate to other than. KHz, consult the sample rate chart on the setup diagram page at the rear of the manual. Initial Setup for Analog output. Follow steps - above. Solder a jumper across the space for resistor R. This removes the reference bias that the A/ converter requires. If this step isn t performed a. V..C. bias voltage will appear on pins and of the XLR connector.. Remove power and locate L,,, jumpers on CT- board and remove them.. Install jumpers across L,,,A just to the left of the pads in the above step. With this change, the output presented to the rear XLR connectors will be a + dbm balanced stereo output. Output is left channel and output is right channel.
IV. Warranty Broadcast evices, Inc. products are warranted against failure due to faulty materials or workmanship for a period of one year from the date of shipment to the ultimate user. The warranty covers repair or replacement of defective parts at the factory, provided the unit has been returned prepaid by the user. All shipments to the factory shall have affixed to the outside of the container an R. A. number obtained from the factory. The above warranty is void if the unit has been modified by the user outside of any recommendations from the factory or if the unit has been abused or operated outside of its electrical or environmental specifications. If customer conducted field tests suggest that the unit may be faulty, whether or not the unit is in warranty, a full report of the difficulty should be sent to Broadcast evices, Inc. factory at Cortlandt Manor, New York. The office may suggest further tests or authorize return for factory evaluation. Units sent to the factory should be well packed and shipped to Broadcast evices, Inc. Crestview Avenue, Cortlandt Manor, NY 0. Remember to affix the R.A. number to the outside of the carton. Any packages received without such R.A. number will be refused. Note: freight collect shipments will also be refused. When the unit has been received, inspected and tested, the customer will receive a report of the findings along with a quotation for recommended repairs, which are found falling outside of the standard warranty. Units returned for in-warranty repairs which are found not to be defective will be subject to an evaluation and handling charge. In-warranty units will be repaired at no charge and returned via prepaid freight. Out-of-warranty units needing repair require a purchase order and will be invoiced for parts, labor, and shipping charges. When ordering replacement part, always specify A) Part number or escription, and Quantity; B) ate of Purchase, Where Purchased; C) Any Special Shipping Instructions. Always specify a street address, as shipping companies cannot deliver to a postal box. Broadcast evices, Inc. is not responsible for any other manufacturer s warranty on original equipment. Nor are we responsible for any failure, damage, or loss of property that may occur due to the installation or operation of our equipment outside of recommended specifications.
V. Schematic iagrams A. Functional iagram B. Setup iagram C. CT-00 Schematic
LA Balanced Left Output LA MPXIN VR 00K Phase Lock Loop Stereo ecoder Left Output VR VR Analog Pre emphasis AC/AES Transmitters T Schott- T L L L J Right Output JP JP Balanced Right Output Schott- L LA LA J C For Pre Emphasis, Install Jumpers C Note: Optional Balanced Left/Right Output is selectable by removing L,,, and placing Jumpers in L,,,,A. B B A CT- Functional Block iagram A
VR - Composite Level CT- Rev. E LA LA L L VR - Right Level VR -Left Level LA LA L L Jumpers shown in digital output position Left Ch. Pre Emphasis JP C C Install for Pre emphasis Right Ch. Pre Emphasis JP ON 0 KHz S B ON 0 ON 0 B KHz KHz ON 0 ON 0 KHz KHz A A CT- Set Up iagram
ate: //00 Title: \\Main\e\cadence\CT-RE.SN Time : 0:: PM.K 00 R S.K 00 SW IP-0 +V R.K 00 0 0.K 00 +V.K 00 R R.K 00 +V R +V TXM TXM TXM0 +V RST~ +V.K 00 R0.K 00 R.K 00 R CKS0 CKS FS0 FS HPFE MCLKSEL.K 00 R U C/C C/FC0 PRO C/C CRE/FC M M M0 V 0 C/SBF U C/C EM/C EM0/C CBL/SBC RST CS0 R +V 0 TXP 0 TXN V+ J GN MCK SCK FSYNC SATA IGOUT +V R T TXP C. 00 0 R /W R CR +V C R MMB000 TXN RST~. 00 R /W Schott- VCC +V C +V EN UA uf 0V C EN GN. 0V LS0 LS 0uF.v 0uF.v +VA +VA C C C C MPXL+ MPXR- MPXL- MPXL+ C0.0 00 +V U C 0uF.v C. 00 C. 00 FSYNC. 00 R R /W R R /W T U VREFL VREFR AVSSL AVSSR VCOM TEST AINL+ AINR+ AINL- AINR- CKS0 AV V AVSS VSS BVSS OVF FS 0 0 PN HPFE IF FS0 M/S~ MCLK LRCK CKSI BICK STO AKA Schott- TXP TXN. 00 FS HPFE FS0 0K 00 +V MPXR+ MPXR+ C.0 00 C. 00 MPXL- MPXR- +V R 0 00 +VA C 0uF.v C 0uF V NOTES:. AGN & GN TIE POINT ONLY.. V+ & VA+ TIE ONLY AT VREG.. ALL RESISTORS % EXCEPT AS NOTE. U +V LM0MP +V Vi Vo C. 00 GN GN UC LS0 U LS0 C. 00 0 C 0uF.v SCK SATA C0. 00 C. 00 +V +V U0 VCC GN.MHZ U VCC GN.MHZ OSC OE OSC OE MHZ +V MHZ +V +V 0 UB S R F Q Q UB LS0 C0. 00 MCLK UA S R F +V Q Q 0 GN IA IA IA I0A IB IB IB I0B C. 00 U F VCC YA YB MUX S S0 EA EB +V CKS0 CKS MPXIN -V +V BNCINP BNCINP BNCINN BNCINN INP +V -V +V J 0 0 HRx +V -V +V AGN <> Title J- BNCINP J- BNCINP J-MF BNCINN J-MF J-MF BNCINN J-MF LOUT+ FB LA TXN L OMIT ROUT+ FB LA TXN L OMIT LOUT- FB LA TXP L OMIT ROUT- FB LA TXP L OMIT Broadcast evices, Inc. CT- COMPOSITE MULTIFUNCTION B Size ocument Number Rev B E ate: Sunday, November, 00 Sheet of
ate: //00 Title: \\Main\e\cadence\CT-RE.SN Time : 0:0:0 PM MPXIN VR 00K +V R. 00 C0. 00 0 00 CR MMBZB C. 00 C C.0 00 R 00K 00 +V R.0K 00 R0 K 00 C pf 00 C pf 00 C.0 00 Y KHZ C C uf VuF V R 0K 00 R K % MF 00. 00 C U PLL MPXIN 0 OSC PILOT GN IENT IREF VREF Vp SNC INFI HCC PUFO CEER NET CEEL FBL FBR 0 LOUT ROUT TA R 0K % MF 00 C.00 00 R 0K 00 C. 00 R K 00 C.00 00 R0 K 00 R 0K 00 R K % MF 00 +V R 0K 00 C RIGHT uf V VR C 0K uf V C00 0pF 00 JP JMP C0 00pF 00 R 0.0K % MF 00 VREF -V C 00pF MICA 0 R 0.0K % MF 00 C 0uF V NEA UA - + C. 00 C +V -V +V C uf V +V -V +V AGN C uf V JP JMP R R 0 R R R 0 0.0K % MF 00 MPXR+ ROUT+ ROUT- MPXR- +V C 0uF V. 00 R C0 0.0K % MF 00 00pF MICA 0 VREF NEA UB - + C0 LEFT C0 uf V VR 0K C uf V 0pF 00 JP JMP C0 00pF 00 R 0.0K % MF 00 VREF -V C 00pF MICA 0 R 0.0K % MF 00 C 0uF V NEA UA - + C. 00 C C0 uf V C uf V JP JMP R R 0 R R R 0 0.0K % MF 00 MPXL+ LOUT+ LOUT- MPXL- +V C 0uF V. 00 R0 C 0.0K % MF 00 00pF MICA 0 +V R 00K 00 VREF VREF NEA UB - + U LMM-. R OMIT C 0uF V C. 00 Title Broadcast evices, Inc. CT- MPX ECOER ANALOG L-R OUT / A- Size ocument Number Rev B <oc> E ate: Sunday, November, 00 Sheet of