User Manual

ManualsBrandsUBS-Axcera ManualsElectronics2000-Watt UHF Transmitter

I N STRUCTI ON MAN UAL

INNOVATOR LX SERIES

UHF Analog Driver/ Transm itter

AXCERA, LLC

103 FREEDOM DRIVE P.O. BOX 525 LAWRENCE, PA 15055- 0525 USA

(724) 873- 8100 • FAX (724) 873- 8105

www.axcera.com • info@axcera.com

Summary of content (90 pages)

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I N STRUCTI ON M AN UAL I NNOVATOR LX SERI ES UHF Analog Driver/ Transm it t er AXCERA, LLC 103 FREEDOM DRI VE P.O. BOX 525 LAWRENCE, PA 15055- 0525 USA ( 724) 873- 8100 • FAX ( 724) 873- 8105 w w w . ax cer a. com • info@axcera.
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UHF Analog Dr iv er / Tr ansm it t er Table of Cont ent s TABLE OF CON TEN TS SECTI ON CHAPTER 1 I NTRODUCTI ON 1.1 1.2 1. 3 1.4 1.5 1.6 PAGE Manual Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Assem bly Designat ion Num bers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Safet y. . . . . . . . . . . . . . . . . . . . . . .
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UHF Analog Dr iv er / Tr ansm it t er Table of Cont ent s TABLE OF CON TEN TS - ( Cont inue d) SECTI ON PAGE 4.5 Power Am plifier Module Assem bly used in 10- 100 Wat t t ransm it t ers. . . . . . . . . 4- 21 4.5.1 1- Wat t Am plifier Module Assem bly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4- 21 4.5.2 1- Wat t UHF Am plifier Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4- 21 4.5.
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UHF Analog Dr iv er / Tr ansm it t er Table of Cont ent s LI ST OF FI GURES FI GURE PAGE 3- 1 3- 2 3- 3 1 kW Minim um Vent ilat ion Configurat ion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3- 4 Front and Rear View Reconnect ion Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3- 5 Rear View of LX Series Digit al Transm it t er . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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UHF Analog Dr iv er / Tr ansm it t er Table of Cont ent s LI ST OF TABLES TABLE 2- 1 2- 2 2- 3 2- 4 2- 5 2- 6 2- 7 2- 8 2- 9 2- 10 2- 11 2- 12 2- 13 2- 14 2- 15 2- 16 2- 17 2- 18 2- 19 2- 20 2- 21 2- 22 2- 23 2- 24 PAGE 10- 100W Analog LX Series Assem blies and Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2- 1 Modulat or Fr ont Panel Sw it ch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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UHF Analog Dr iv er / Tr ansm it t er Chapt er 1, I nt r oduct ion Ch a pt e r 1 I ntroduction This m anual explains t he inst allat ion, set up, alignm ent , and m aint enance procedures for t he I nnovat or LX Series UHF analog m odular driver/ t ransm it t er. I t is im port ant t hat you read all of t he inst r uct ions, especially t he safet y inform at ion in t his chapt er, before you begin t o inst all or operat e t he unit . r elev ant appendix t hat cont ains t he drawings for t hat it em . 1 .
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UHF Analog Dr iv er / Tr ansm it t er Chapt er 1, I nt r oduct ion vent ilat ion. To ensure t he reliable operat ion of t he driver/ t ransm it t er, and t o pr ot ect t he unit fr om ov er heat ing, t hese openings m ust not be blocked. used, but do not sat ur at e t he com ponent s. The fans and heat sinks should be cleaned of all dust or dirt t o perm it t he free flow of air for cooling purposes.
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UHF Analog Dr iv er / Tr ansm it t er Chapt er 1, I nt r oduct ion inform at ion and a brief descript ion of why t he unit is being ret urned. buyer ( t ransport at ion and insurance prepaid) , and ( c) Axcera det erm ines, in it s sole j udgm ent , t hat t he pr oduct is defect iv e and not subj ect t o any m isuse, neglect , im proper inst allat ion, negligence, accident , or ( unless aut horized in writ ing by Axcera) repair or alt erat ion.
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UHF Analog Dr iv er / Tr ansm it t er Chapt er 1, I nt r oduct ion F W ARN I N G!!! × H I GH VOLTAGE Ø DO NOT ATTEMPT TO REPAI R OR TROUBLESHOOT THI S EQUI PMENT UNLESS YOU ARE FAMI LI AR W I TH I TS OPERATI ON AND EXPERI ENCED I N SERVI CI NG HI GH VOLTAGE EQUI PMENT. LETHAL VOLTAGES ARE PRESENT W HEN POW ER I S APPLI ED TO THI S SYSTEM. I F POSSI BLE, TURN OFF POW ER BEFORE MAKI NG ADJUSTMENTS TO THE SYSTEM.
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UHF Analog Dr iv er / Tr ansm it t er Chapt er 1, I nt r oduct ion EMERGENCY FI RST AI D I NSTRUCTI ONS Per sonnel engaged in t he inst allat ion, oper at ion, or m aint enance of t his equipm ent ar e ur ged t o becom e fam iliar w it h t he follow ing r ules bot h in t heor y and pr act ice. I t is t he dut y of all oper at ing per sonnel t o be pr epar ed t o giv e adequat e Em er gency Fir st Aid and t her eby pr ev ent av oidable loss of life. RESCUE BREATHI NG 1.
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UHF Analog Dr iv er / Tr ansm it t er Chapt er 1, I nt r oduct ion N ot e : Be ca u se of possible FCC a ssign e d offse t , ch e ck Fr e qu e n cy a s w r it t e n on Lice n se . for the a ssign e d Ca r r ie r UH F Cha nne ls N TSC St a nda r d I F, 4 5 .7 5 M H z L.O. ( M H z) Visu a l Ca r r ie r Fr e qu e n cy ( M H z) Cr y st a l Fr e qu e n cy ( M H z) Ch an n el Nom inal Minus Plus Nom inal Nom inal Minus Plus 14 471.25 471.24 471.26 517.00 64.625 64.62375 64.62625 15 477.
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UHF Analog Dr iv er / Tr ansm it t er Chapt er 1, I nt r oduct ion N ot e : Be ca u se of possible FCC a ssign e d Fr e qu e n cy a s w r it t e n on Lice n se . offse t , ch e ck for the a ssign e d Ca r r ie r UH F Cha nne ls N TSC St a nda r d I F, 4 5 .7 5 M H z L.O. ( M H z) Visu a l Ca r r ie r Fr e qu e n cy ( M H z) Cr y st a l Fr e qu e n cy ( M H z ) Ch an n el Nom inal Minus Plus Nom inal Nom inal Minus Plus 44 651.25 651.24 651.26 697.00 87.125 87.12375 87.
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UHF Analog Dr iv er / Tr ansm it t er N ot e : Chapt er 1, I nt r oduct ion Be ca u se of possible FCC a ssign e d offse t , ch e ck Fr e qu e n cy a s w r it t e n on Lice n se . for the a ssign e d Ca r r ie r UH F Fr e qu e n cy Assign m e n t s Ch a n n e l N um ber Ba n dw idt h ( M H z) V id e o ( M H z) Co lo r ( M H z) Au d io ( M H z) 14 470- 476 471.25 474.83 475.75 15 476- 482 477.25 480.83 481.75 16 482- 488 483.25 486.83 487.75 17 488- 494 489.25 492.83 493.
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UHF Analog Dr iv er / Tr ansm it t er N ot e : Chapt er 1, I nt r oduct ion Be ca u se of possible FCC a ssign e d offse t , ch e ck for t h e a ssign e d Ca r r ie r Fr e qu e n cy a s w r it t e n on Lice n se . UH F Fr e qu e n cy Assign m e n t s Ch a n n e l N um ber Ba n dw idt h ( M H z) V id e o ( M H z) Co lo r ( M H z) Au d io ( M H z) 44 650- 656 651.25 654.83 655.75 45 656- 662 657.25 660.83 661.75 46 662- 668 663.25 666.83 667.75 47 668- 674 669.25 672.83 673.
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UHF Analog Dr iv er / Tr ansm it t er Chapt er 1, I nt r oduct ion dBm , dBw , dBm V, dB µ V, & VOLTAGE EX PRESSED I N W ATTS 5 0 Oh m Sy st e m WATTS 1,000,000,000,000 100,000,000,000 10,000,000,000 1,000,000,000 100,000,000 10,000,000 1,000,000 100,000 10,000 1,000 100 50 20 10 1 0.1 0.01 0.001 0.0001 0.00001 0.000001 0.0000001 0.00000001 0.000000001 0.0000000001 0.00000000001 0.
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UHF Analog Dr iv er / Tr ansm it t er Chapt er 1, I nt r oduct ion USEFUL CON VERSI ON FACTORS TO CONVERT FROM TO MULTI PLY BY m ile ( US st at ut e) kilom eter (km ) inch ( in) millimeter (mm) inch ( in) cent im et er ( cm ) inch ( in) meter (m) f oot ( f t ) meter (m) yard ( yd) meter (m) m ile per hour (m ph) kilom eter per hour(km / hr) m ile per hour (m ph) m et er per second ( m / s) pound ( lb) kilogram (kg) gallon ( gal) lit er U.S. liquid ( One U.S. gallon equals 0.
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UHF Analog Dr iv er / Tr ansm it t er Chapt er 1, I nt r oduct ion ABBREVI ATI ON S/ ACRON YM S AC Alt ernat ing Current PCB Print ed circuit board AFC Aut om at ic Fr equency Cont r ol QAM Quadrat ure Am plit ude Modulat ion ALC Aut om at ic Level Cont rol AM Am plitude m odulation AGC Aut om at ic Gain Cont rol AW G Am erican wire gauge BER Bit Error Rat e BW Bandwidt h DC Direct Current D/ A Digit al t o analog dB Decibel dBm Decibel referenced t o 1 m illiwat t dBm V Decib
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UHF Analog Dr iv er / Tr ansm it t er Chapt er 1, I nt r oduct ion RETURN LOSS VS. VSW R 0 - 10 - 20 R E T U R N L O S S - 30 dB - 40 - 50 - 60 - 70 1.001 1.01 1. 1 VSW R LX Series, Rev . 0 1- 13 2.
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UHF Analog Dr iv er / Tr ansm it t er Chapt er 2, Sy st em Descr ipt ion & Rem ot e Cont r ol Connect ions Ch a pt e r 2 Syst em Descript ion & Rem ot e Cont rol Connect ions The analog t ransm it t ers in t he I nnovat or LX Series are com plet e 10W t o 100W UHF Analog int ernally diplexed m odular t elev ision t r ansm it t er s t hat oper at e at a nom inal visual out put power of 10 t o 100 w at t s peak sync and an aver age aur al out put pow er of 1 t o 10 w at t s, at an A/ V rat io of 10 dB, 10%
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UHF Analog Dr iv er / Tr ansm it t er Chapt er 2, Sy st em Descr ipt ion & Rem ot e Cont r ol Connect ions The ( A2) Modulat or Assem bly cont ains t he Modulat or Board ( 1301797) . The m odulat or is broadcast qualit y and pr ov ides fr ont panel access t o cont r ol and m onit oring point s. The video level is cont rolled t hrough a sync t ip clam p and sync and w hit e clipping cir cuit r y. The I F oscillat or is oven cont rolled and locked t o a 10 MHz reference for st abilit y.
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UHF Analog Dr iv er / Tr ansm it t er Chapt er 2, Sy st em Descr ipt ion & Rem ot e Cont r ol Connect ions Syst em out put pow er cont r ol. Thr ough t he front panel display or a rem ot e int er face, an oper at or can set t he t ransm it t er's RF out put pow er. The range of RF power adj ust m ent is bet ween 0% ( full off) and 105% ( full power plus) . A front panel I F Processor m odule pot ent iom et er set s t he upper lim it of RF power at 120% .
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UHF Analog Dr iv er / Tr ansm it t er Chapt er 2, Sy st em Descr ipt ion & Rem ot e Cont r ol Connect ions t he t ransm it t er or in Manual m ode t he t r ansm it t er w ill cont inue t o oper at e at 25% out put . report ed on t he Cont rol Monit oring board. When t he I F Processor board det ect s an I nput Signal fault it aut om at ically Mut es t he t ransm it t er. The sy st em cont r oller does not Mut e on an I F Pr ocessor I nput fault .
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UHF Analog Dr iv er / Tr ansm it t er Chapt er 2, Sy st em Descr ipt ion & Rem ot e Cont r ol Connect ions driver t hreshold is set by a front panel Upconvert er m odule pot ent iom et er. When an over- drive condit ion is det ect ed, t he Upconv er t er m odule r educes it s RF out put level. For values less t han 0.
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UHF Analog Dr iv er / Tr ansm it t er Chapt er 2, Sy st em Descr ipt ion & Rem ot e Cont r ol Connect ions sent t o t he back plane on t w o por t s. One port is sent t o t he Modulat or m odule, if pr esent , and t he ot her is r out ed t o a BNC connect or ( J11) on t he backplane for a syst em 10 MHz out put signal. is set t o t he desired LO frequency in kHz / 5 kHz. The m axim um LO frequency set t ing w it h t hese param et ers is 1310.715 MHz.
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UHF Analog Dr iv er / Tr ansm it t er Chapt er 2, Sy st em Descr ipt ion & Rem ot e Cont r ol Connect ions The ( A4) Cont rol & Monit oring/ Power Supply Assem bly is configured at t he fact ory for operat ion at 110 VAC or 220 VAC. The assem bly m ade up of a Cont rol Board ( 1302021) , a Power Prot ect ion Board ( 1302837) and a Swit ch Board ( 1527- 1406) .
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UHF Analog Dr iv er / Tr ansm it t er Chapt er 2, Sy st em Descr ipt ion & Rem ot e Cont r ol Connect ions connect or of t he Cont r ol & Monit oring/ Power Supply m odule. 2 .1 .5 ( A6 ) Pow er Am plifier Module Asse m bly, Ex cit e r , 1 0 0 W Tr a nsm it t e r ( 1 3 0 1 9 2 3 ; Appendix B) The 100 Wat t Transm it t er/ Excit er Driver Power Am plifier m odule and any Ext ernal Am plifier m odules cont ain t he sam e cont rol and m onit oring board.
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UHF Analog Dr iv er / Tr ansm it t er Chapt er 2, Sy st em Descr ipt ion & Rem ot e Cont r ol Connect ions of cont rol board swit ch SW1 m ust be set on t o r out e t hese lines as t he syst em 's RF power signals. I n syst em s of out put power great er t han 50 Wat t s digit al or 100 Wat t s analog, syst em power is m onit ored by an ext ernal m odule t hat is connect ed t o TB31 and cont r ol boar d SW1 sw it ches m ust be set of f .
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UHF Analog Dr iv er / Tr ansm it t er Assem bly ( 1301949) , an Am plifier Cont rol Board ( 1301962) , a 1 Wat t Module Assem bly ( 1302891) and a TFS 40W UHF Module ( 1206693) . The Driver Power Am plifier Module cont ains Broadband LDMOS am plifiers t hat cov er t he ent ir e UHF band w it h no t uning required. They am plify t he RF t o t he pow er lev el, 7 Wat t s Peak of Sy nc is m axim um , t hat is needed t o drive t he ext ernal am plifiers t o t he out put power level of t he t ransm it t er.
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UHF Analog Dr iv er / Tr ansm it t er Chapt er 2, Sy st em Descr ipt ion & Rem ot e Cont r ol Connect ions Table 2- 20. Driver Am plifier St at us I ndicat or LED ENABLED ( Green) DC OK ( Green) TEMP ( Green) MOD OK ( Green) FUN CTI ON When lit Gr een, it indicat es t hat t he PA is in t he Oper at e Mode. I f a Mut e occurs, t he PA will rem ain Enabled, unt il t he input signal is ret urned. When lit Gr een, it indicat es t hat t he fuse pr ot ect ed DC input s t o t he PA m odule are OK.
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UHF Analog Dr iv er / Tr ansm it t er Chapt er 2, Sy st em Descr ipt ion & Rem ot e Cont r ol Connect ions Processor will be enabled, t he m ut e indicat or on t he front panel will be ext inguished. The + 32 VDC st age of t he Power Supply in t he Cont rol & Monit oring Module is enable d, t he oper at e indicat or on t he front panel is lit and t he DC OK on t he front panel should also be green. The enable and DC OK indicat ors on t he PA Module will also be green.
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UHF Analog Dr iv er / Tr ansm it t er • Chapt er 2, Sy st em Descr ipt ion & Rem ot e Cont r ol Connect ions Power Am plifier I nt erlock is high indicat ing t hat t he am p lifier is not inst alled. • Receipt of a “ St andby CMD” over t he serial int erface. Ope r a t in g Fr e qu e n cy St a n dby M ode The LX Series t ransm it t er cont roller is designed t o operat e on UHF fre quencies.
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UHF Analog Dr iv er / Tr ansm it t er Chapt er 2, Sy st em Descr ipt ion & Rem ot e Cont r ol Connect ions 2 .4 Cu st om e r Re m ot e Con n e ct ion s Th e rem ot e m onit oring and operat ion of t he t ransm it t er is provided t hrough j acks TB30 and TB31 locat ed on t he rear of t he chassis assem bly. I f rem ot e connect ions are m ade t o t he t ransm it t er, t hey m ust be m ade t hrough plugs TB30 and TB31 at posit ions not ed on t he t ransm it t er int er connect dr aw ing and Table 2- 20.
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UHF Analog Dr iv er / Tr ansm it t er Signa l N a m e Pin Designat ions RMT Transm it t er St and- By TB30- 7 RMT Power Raise TB30- 8 RMT Power Low er TB30- 9 RMT Sy st em Reflect Pow er TB30- 10 RMT Syst em Visual/ Forward Pow er TB30- 11 RMT Syst em Aural Pow er TB30- 12 RMT Spare 1 RMT Spare 2 TB30- 13 TB30- 14 Sy st em Reflect Pow er TB31- 13 Syst em Visual / For w ar d Pow er TB31- 14 Syst em Aural Pow er TB31- 15 I F Pr ocessor I F Signal Select TB31- 3 I F Pr ocessor DLC Volt
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UHF Analog Dr iv er / Tr ansm it t er Signa l N a m e RMT + 12 VDC RMT - 12 VDC LX Series, Rev.
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UHF Analog Dr iv er / Tr ansm it t er Chapt er 3, Sit e Considerat ions, I nst allat ion and Set up Procedures Ch a pt e r 3 Sit e Considerat ions, I nst allat ion and Set up Procedures Ther e ar e special consider at ions t hat need t o be t ak en int o account befor e t he I nnovat or LX Series analog driver/ t ransm it t er can be inst alled.
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UHF Analog Dr iv er / Tr ansm it t er Chapt er 3, Sit e Considerat ions, I nst allat ion and Set up Procedures sour ces of heat , such as per sonnel, and all should be t ak en int o account . Now t hat t he am ount of heat t hat m ust be rem oved is known, t he next st ep is t o det erm ine how t o accom plish t his. The opt ions are air condit ioning, vent ilat ion, or a com binat ion of t he t wo.
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UHF Analog Dr iv er / Tr ansm it t er Chapt er 3, Sit e Considerat ions, I nst allat ion and Set up Procedures higher t han four feet above t he floor. The inlet m ust be locat ed w her e dir t , leav es, snow , et c., w ill not be carried in wit h t he cooling air. 5. The ex haust should be locat ed as high as possible. Som e duct ing is usually required t o insure t he com plet e flushing of heat ed air w it h no st agnant ar eas. 6.
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UHF Analog Dr iv er / Tr ansm it t er Chapt er 3, Sit e Considerat ions, I nst allat ion and Set up Procedures alw ay s good pr act ice t o consult t he m anufact urer when quest ions arise. Ax cer a can be con t act ed at ( 724) 8738100. Figur e 3- 1. 1 kW Minim um Vent ilat ion Configurat ion The m odules are m ount ed t o t he chassis assem bly w it h slides t hat are on t he t op and t he bot t om of t he m odules.
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UHF Analog Dr iv er / Tr ansm it t er Chapt er 3, Sit e Considerat ions, I nst allat ion and Set up Procedures NOTE: To pull out t he power am plifier m odule for replacem ent purposes, t he input and out put coaxial cables m ust first be rem oved from t he rear of t he chassis assem bly. Connect t he bandpass filt er and t r ap filt er t o t he out put of t he chassis assem bly. Figur e 3- 2.
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UHF Analog Dr iv er / Tr ansm it t er Chapt er 3, Sit e Considerat ions, I nst allat ion and Set up Procedures Figur e 3- 3: Rear View of LX Series Analog Transm it t er J2 5 J2 1 TB0 2 TB3 0 J1 8 TB3 1 J9 J6 J2 4 J1 1 J4 J8 J2 3 J1 9 J3 2 J5 J3 4 Table 3- 1: Rear Chassis Connect ions for t he LX Ser ies Analog Tr ansm it t er .
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UHF Analog Dr iv er / Tr ansm it t er Chapt er 3, Sit e Considerat ions, I nst allat ion and Set up Procedures char act er s ar e special char act er s used t o navigat e up or down t hrough t he m enu scr eens. Display t ext flashes on discr et e fault condit ions for all scr eens t hat display a fault condit ion. 3 .5 .
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UHF Analog Dr iv er / Tr ansm it t er Chapt er 3, Sit e Considerat ions, I nst allat ion and Set up Procedures Table 3- 5: Menu 11 - Er r or List Access Scr een S Y S T E E R R O R ↑ M L E R R O R I S E T N T ↓ D 6 0 S I S P L A Y S T B This screen of t he t ransm it t er shows t he current num ber of errors and provides operat or access t o v iew t he er r or list . This is t he ent r y point t o Menu 20. I f ENT is pushed, go t o Menu 20.
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UHF Analog Dr iv er / Tr ansm it t er Chapt er 3, Sit e Considerat ions, I nst allat ion and Set up Procedures Table 3- 9: Menu 30 - Tr ansm it t er Dev ice Det ails Scr een S X P Y S T M T R O W E E R ↑ M I N S D U E T O P P P A E L I R Y L A : S T E O K M O D E E C ↓ S This scr een of t he t r ansm it t er allow s access t o t he t r ansm it t er par am et er s of inst alled devices. The syst em is configur ed t o know w hich devices are present .
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UHF Analog Dr iv er / Tr ansm it t er Syst em Com ponent Chapt er 3, Sit e Considerat ions, I nst allat ion and Set up Procedures Param et er Ext . Power Am plifier Modules Det ails ( Only in high power syst em s) Norm al Fault ed ( Blinking) FORWARD POWER REFLECTED POWER AMP 1 CURRENT AMP 2 CURRENT TEMPERATURE CODE VERSI ON xxx% xxx% xx.xA xx.xA xxC x.x xxx% xxx% xx.xA xx.
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UHF Analog Dr iv er / Tr ansm it t er Chapt er 3, Sit e Considerat ions, I nst allat ion and Set up Procedures Table 3- 14: Menu 40- 2 - Tr ansm it t er Set - up: Frequency Sele ct Scr een T 0 R 3 A N F T S R A ↑ M I E Q B L T U E T E ( ↓ E N O + R C R ) S Y C E E S U S T E S C L T U E O P C T M ( - ) This scr een of t he t r ansm it t er is allow s access t o t r ansm it t er fr equency set - up param et ers. The choices of t his scr een ar e 'TABLE' or 'CUSTOM'.
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UHF Analog Dr iv er / Tr ansm it t er Chapt er 3, Sit e Considerat ions, I nst allat ion and Set up Procedures Table 3- 18: Menu 40- 6 - Tr ansm it t er Set - up: Serial Address Screen T 0 R 4 A N S S E ↑ M I R I T A ↓ T L E ( + R A D ) S D E R T E E S C S U S P 5 ( - ) This scr een allow s t he user t o set t he ser ial addr ess of t he t r ansm it t er . The default address is 5. This value and all ot her set - up param et ers, are st ored in non- volat ile m em ory.
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UHF Analog Dr iv er / Tr ansm it t er Chapt er 3, Sit e Considerat ions, I nst allat ion and Set up Procedures Table 3- 22: Menu 40- 10 - Tr ansm it t er Set - up: Syst em Reflect ed Pow er Calibrat ion T 0 R 6 A N S R ↑ S Y E M I S T F L T E E ↓ T E M C T ( + R C A P ) S L W E E I R S T B R X U A . C P T X ( E % - ) This scr een is used t o adj ust t he calibr at ion of t he sy st em 's r eflect ed pow er .
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UHF Analog Dr iv er / Tr ansm it t er Chapt er 3, Sit e Considerat ions, I nst allat ion and Set up Procedures out put set s a linear cir cuit v olt age t hat is cont rolling a non- linear power circuit . VI DEO LOSS: This indicat es t he loss of Video t o t he m odulat or, when Red. I f a problem occurred during t he set up and operat ion procedures, refer t o Chapt er 5, Det ailed Alignm ent Procedures, of t his m anual for m ore inform at ion.
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UHF Analog Dr iv er / Tr ansm it t er DC OK - This illum inat es Green when t he DC out put s t hat connect t o t he m odules in t he t ransm it t er are pr esent . Chapt er 3, Sit e Considerat ions, I nst allat ion and Set up Procedures DC OK - This illum inat es Green when t he DC input s t o t he PA m odule are pr esent . POW ER AMPLI FI ER OR DRI VER MODULE LEDs ON FRONT PANEL TEMP - This illum inat es Green when t he t em perat ure of t he heat sink in t he PA is below 78° C.
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UHF Analog Dr iv er / Tr ansm it t er Chapt er 4, Cir cuit Descr ipt ions Ch a pt e r 4 Circuit Descriptions det erm ined by t he set t ing of t he MONO, balanced audio gain pot R110, accessed t hr ough t he fr ont panel. The out put of t he am plifier st age is wired t o t he sum m ing point at U13C, pin 9. 4 .1 ( A2 ) M odula t or M odule ( 1 3 0 1 9 2 9 ; Appendix B) NOTE: Not used in a t ranslat or syst em . 4 .1 .1 Ana log M odula t or Boa rd ( 1 3 0 1 7 9 7 ; Appendix B) 4.1.1.
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UHF Analog Dr iv er / Tr ansm it t er am plifier U13D. The am plified signal is t hen applied t hough t he SAP/ PRO, SCA gain pot R150, accessed t hr ough t he front panel, t o t he sum m ing point at pin 9 of U13C. 4.1.1.4 Audio Modulat ion of t he 4.5 MHz VCO The Mono balanced audio, or t he St er eo com posit e audio, or t he SAP/ PRO SCA buffered audio signal, is fed t o t he com m on j unct ion of resist ors R111, R130, and R152 t hat connect t o pin 9 of am plifier U13C.
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UHF Analog Dr iv er / Tr ansm it t er frequency. The visual I F signal and t he aural I F signal are t hen com bined in t he diplexer circuit t o produce t he visual I F + aur al I F out put , “ G” , t hat is connect ed t o J41C pin 28C t he Com bined I F out put of t he boar d. 4.1.1.6 Main Video Signal Pat h ( Par t 1 of 2) The baseband v ideo input connect s t o t he board at J41A pins 19A ( - ) , “ W” , and 20A ( + ) , “ V” .
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UHF Analog Dr iv er / Tr ansm it t er of sync aut o clam p cir cuit w ill not aut om at ically be clam ped t o t he pr e set level. 4.1.1.9 Main Video Signal Pat h ( Par t 2 of 2) A sam ple of t he clam ped video out put from t he group delay circuit r y at t h e j unct ion of R44, R62 and R300 is connect ed t o a w hit e clipper cir cuit consist ing of Q1 and associat ed cir cuit r y . The base v olt age of Q1 is set by t he volt age divider net work consist ing of R1, R9 and R5.
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UHF Analog Dr iv er / Tr ansm it t er t hrough C152 t o t he am plifier U23A. The out put of U23A is split wit h one part connect ing t o Q26 t hat shut s dow n t he 45.75 MHz oscillat or. Anot her pat h connect s t o Q25 t he conduct s and light s t he LED DS7, Alt ernat e I F, viewed on t he front panel. The final pat h connect s t hrough R268 t o Q22 t hat is biased on and energizes t he relay, K2.
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UHF Analog Dr iv er / Tr ansm it t er m at ching net w ork consist ing of T3 and T4. One par t of signal connect s t o J10, t he 41.25 MHz + 45.75 MHz sam ple out put j ack , locat ed on t he fr ont panel. The ot her par t , “ G” , connect s t o J41C pin 28C t he Com bined I F Out put of t he board. 4.1.1.14 Volt age Requirem ent s The ± 12 VDC needed for t he operat ion of t he board ent ers t hrough j ack J41A pins 25A ( + 12 VDC) and 26A ( - 12 VDC) .
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UHF Analog Dr iv er / Tr ansm it t er t he t ray is in a high RF environm ent . ( I f t his is t he case, t he t r ansm it t er w ill have t o be ser v iced w it h t he t r ay cov er off in spit e of t he pr esence of ot her RF signals) . The filt ered I F signal is fed t hrough a pit ype m at ching pad consist ing of R2, R3, and R4 t o t he pin- diode at t enuat or cir cuit consist ing of CR1, CR2, and CR3. 4.2.1.
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UHF Analog Dr iv er / Tr ansm it t er pat h is t hen est ablished from t he + 12 VDC line t hrough Q5, t he resist ors R69 and R137, and t he red LED DS3, input loss indicat or, which is illum inat ed. When Q5 is on, it applies a high t o t he gat e of Q6. This causes it t o conduct and apply a m odulat ion loss pull- dow n out put t o J42C, pin 7C, which is applied t o t he front panel display on t he Cont rol/ Monit or m odule.
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UHF Analog Dr iv er / Tr ansm it t er m at ching circuit s t hat m akes it operat e as a w ide- band I F am plifier . The out put of U1 connect s t o J40 t hat is j um per ed t o J41. The J40 j ack is available, as a sam ple of t he pre - cor r ect ion I F for t roubleshoot ing purposes and syst em set up. The I F signal is connect or t o a split t er Z1 t hat has an in phase out put and a 90° Quadr at ur e out put , w hich ar e t hen connect ed t o t he linear it y cor r ect or port ion of t he board. 4.2.
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UHF Analog Dr iv er / Tr ansm it t er The am plit ude and phase pre - dist or t ed I F signals are com bined by Z2 and connect ed t o J37 t hat is j um pered t o J36 on t he board. J37 can be used for t est ing or m onit oring purposes of t he I F signal aft er am plit ude and phase pre dist ort ion. The pre - dist ort ed I F signal connect s t hr ough a r esist or buffer net w or k t hat pr event s loading of t he com biner before it is w ired t o t he fr equency r esponse cir cuit r y . 4.2.1.
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UHF Analog Dr iv er / Tr ansm it t er increasing it s gain m aint aining t he sam e out put power level. The ALC act ion st ar t s w it h t he ALC det ect or lev el m onit or ed at TP4. The det ect or out put at TP4 is nom inally + .8 VDC and is applied t hrough resist or R77 t o a sum m ing point at op- am p U10A, pin 2. The current available from t he ALC det ect or is offset , or com plem ent ed, by current t aken away from t he sum m ing j unct ion.
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UHF Analog Dr iv er / Tr ansm it t er t hat is conv er t ed t o a bias v olt age t hat connect s t o t he VCO. This v olt age adj ust s t he out put fr equency of t he VCO unt il it is on t he desired frequency. The Phase lock loop is program m ed by loading in dat a generat ed by t he cont rol m odule. This dat a set s t he dividers so t hat t he 10MHz and t he VCXO fr equency are divided t o 5kHz. These divide num bers are loaded int o U6 using t he clock, dat a and LE lines.
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UHF Analog Dr iv er / Tr ansm it t er t hen fed t o t he SMA RF out put j ack of t he boar d at J3. Ty pical out put lev el of t he signal is + 16 dBm nom inal. This output connect s t hr ough A5 a channel filt er t o t he LO/ Upconvert er Board. The DC v olt ages needed t o oper at e t he UHF generat or board are supplied by t he LO/ Upconvert er Board.
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UHF Analog Dr iv er / Tr ansm it t er appear as a good 50- Ω load at all fr equencies. The pad, in t he out put line of t he board, consist ing of R20, R18, and R21 buffer s t he bad effect s of t he react ive filt er load and m akes it appear as a 50 Ω im pedance. The RF input signal from t he ext ernal filt er re - ent er s t he boar d at J6 ( - 11 t o 17 dBm ) and is capacit ively coupled t o t he pin- diode at t enuat or cir cuit consist ing of CR2, CR3, and CR4.
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UHF Analog Dr iv er / Tr ansm it t er The RF t hen ent er s a coupler st age, which provides a sam ple of t he RF at J7 ( –20dB) , t he front panel RF sam ple j ack. The m ain pat h t hrough coupler is t o J43 pin 25B, t he Upconvert er RF out put j ack of the m odule (+ 0 to + 10 dBm ) .
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UHF Analog Dr iv er / Tr ansm it t er Wit h no ext ernal 10- MHz reference input , t he level connect ed t o U7A Pin 2 w ill be low . This w ill be less t han t he reference set by R46 and R48, which is connect ed t o pin 3 of U7A, t hat causes t he out put of U7A t o go high. The high connect s t o t he gat es of Q3, Q5 and Q6, which are biased on and causes t heir dr ains t o go low .
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UHF Analog Dr iv er / Tr ansm it t er j ack J43 pin 15A, t he PLL Lock I ndicat or out put of t he boar d. Volt age Requir em ent s The board is powered by ± 12 VDC t hat is produced by an ext ernal power supply. + 12 VDC ent ers t he board t hrough J43 pins 18A, B & C, and is filt ered and isolat ed by L5, L6 and t he shunt capacit or C24. The + 12 VDC is t hen applied t o t he r est of t he boar d and t o J14 pin 3 for use by t he UHF Generat or Board. One connect ion of t he + 12 VDC is t o I C U12.
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UHF Analog Dr iv er / Tr ansm it t er Chapt er 4, Cir cuit Descr ipt ions The poly sw it ch r eset t able fuses m ay open on a current as low as 2.43 Am ps at 50 C, 3 Am ps at 25 C or 3.3 Am ps at 0 C. They definit ely will open when t he current is 4.86 Am ps at 50 C, 6 Am ps at 25 C or 6.6 Am ps at 0 C. The connect ions from J62 and J63 of t he Power Prot ect ion Board are wired t o J62 and J63 on t he Cont rol Board.
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UHF Analog Dr iv er / Tr ansm it t er Chapt er 4, Cir cuit Descr ipt ions U3 and U4 are used t o select ively enable various input and out put I Cs found on pages 2 & 3 of t he schem at ic. t urn on t hreshold of t he FET ( about 2 VDC) , a logic high is applied t o t he digit al input buffer, U9. U1 has t w o serial port s available. I n t his applicat ion, one port is used t o com m unicat e wit h t ransm it t er syst em com ponent s where U1 is t he m ast er of a RS- 485 serial bus.
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UHF Analog Dr iv er / Tr ansm it t er Power Prot ect ion Board. The ± 12 VDC gener at ed by t he sw it ching pow er supply connect s t o J62 and J63 aft er being fuse pr ot ect ed on t he Pow er Pr ot ect ion Boar d. Schem at ic Page 5 There are t hree dual element , red/ green, com m on cat hode LED indicat ors m ount ed on t he front panel of t he sled assem bly; DC OK, Operat e and Fault .
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UHF Analog Dr iv er / Tr ansm it t er power supply at V1- 6 & 7. The power supply is configured for t hree out put volt ages + 12V, - 12V, at t he 8 posit ion t erm inal block, and a m ain out put power of + 32 VDC at J50 pin A ( + ) and J50 pin B ( Rt n) . The power supply is power fact or cor r ect ed t o .98 for opt im um efficiency and decr ease in energy consum pt ion. For safet y purposes all out put s ar e over volt age and over cur r ent pr ot ect ed.
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UHF Analog Dr iv er / Tr ansm it t er Chapt er 4, Cir cuit Descr ipt ions deliver an out put pow er of 40 w at t s ( CW) wit h approxim at ely 14 dB of gain. of pot ent iom et ers R807 and R808. The set t ings are fact ory im plem ent ed and should not be alt ered. The am plificat ion cir cuit consist s of LDMOS t ransist ors V804 and V805 connect ed in parallel and operat ing in class AB. The paralleling net work is achieved w it h t he aid of 3 dB couplers Z802 and Z803.
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UHF Analog Dr iv er / Tr ansm it t er 4 .5 .5 ( A4 ) Couple r Boa r d Asse m bly ( 1 3 0 1 9 4 9 ; Appendix B) The UHF coupler board assem bly pr ovides a for w ar d and r eflect ed power sam ples of t he out put t o ( A5) t he am plifier cont rol board where it connect s t o t he input of t he ov er dr iv e- pr ot ect ion cir cu it . The RF input t o t he UHF coupler assem bly, from t he 250 Wat t UHF am plifier m odule, connect s t o SMA j ack J1.
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UHF Analog Dr iv er / Tr ansm it t er t han or equal t o 1% . 100m A of current is available from each devic e but again t he cont roller will not need t his m uch cur r ent . I n t he upper left sect ion ar e cir cuit s w it h U12 and U13. U12 is used t o generat e a r egulat ed v olt age t hat is about 5 v olt s less t han t he + 32 VDC supply, approxim at ely + 26.25 VDC.
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UHF Analog Dr iv er / Tr ansm it t er cir cuit . The det ect ed lev el is connect ed t o L4 t hat is par t of an int er car r ier not ch filt er cir cuit t hat is t uned t o elim inat e t he 4.5 MHz aural int ercarrier, if present . The Average power sam ple is am plified by U26D and connect ed t hrough t he average calibrat ion pot R166 t o U26C.
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UHF Analog Dr iv er / Tr ansm it t er Chapt er 4, Cir cuit Descr ipt ions am plifier assem bly ( Figure 4- 1) . Th e assem bly is m ade up of a ( 51- 5378- 30800) m odule, which operat es class AB and is a highly linear broadband am plifier for t he frequency range of 470 t o 860 MHz. I t can deliver an out put pow er of 40 w at t s ( CW) wit h approxim at ely 14 dB of gain. I t is set as needed t o pr ovide t he dr ive level t o t he ext ernal PA Assem blies. 4 .6 .
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UHF Analog Dr iv er / Tr ansm it t er Chapt er 4, Cir cuit Descr ipt ions boar d w her e it connect s t o t he input of t he overdrive- pr ot ect ion cir cuit . analog sw it ch U1. PA7 is connect ed t o a via, V10, for fut ure access. The RF input t o t he UHF coupler assem bly, from t he 40 Wat t UHF am plifier m odule, connect s t o SMA j ack J1. The RF is connect ed by a st ripline t r ack t o t he SMA t y pe connect or RF Out put j ack J2.
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UHF Analog Dr iv er / Tr ansm it t er r egulat ed v olt age t hat is about 5 v olt s less t han t he + 32 VDC supply, approxim at ely + 26.25 VDC. When t he + 32 VDC supply is enabled, t he circuit ry around U13B is used t o provide gat e v olt age t o Q10 t hat is 5 v olt s gr eat er t han t he sour ce pin of t his FET. The gat e of Q10 can be t ur ned Off by any one of a few differ ent cir cuit s. U10A is used t o t urn Off t he gat e of Q10 in t he event of high current in am plifier # 1. At 0.
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UHF Analog Dr iv er / Tr ansm it t er of U26C is connect ed t o t he com par at or I C U26B t hat has Aural Null and Offset Null, if pr esent in t he syst em , connect ed t o t he ot her input . The out put Av er age For w ar d pow er level connect s t o J9 pin 2 of t he boar d. A Reflect ed Power Sam ple ent er s t he boar d at SMA Jack J5 and is det ect ed by CR20 and t he DC level am plified by U28B. The out put of U28B at pin 7 is connect ed t hr ough t he r eflect ed calibrat ion pot R163 t o U28C.
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UHF Analog Driver/ Transm it t er Chapt er 5, Det ailed Alignm ent Procedures Ch a pt e r 5 Det ailed Alignm ent Procedures This t ransm it t er w as aligned at t he fact ory and should not require addit ional adj ust m ent s t o achieve norm al operat ion. Aft er rem oval of t he failed m odule, slide t he replacem ent m odule in place and m ak e cer t ain it connect s t o t he backplane board.
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UHF Analog Driver/ Transm it t er Chapt er 5, Det ailed Alignm ent Procedures 5 .2 LX Se r ie s Ex cit e r / Am plifie r Ch a ssis Asse m bly following det ails t he m eaning of each LED: This t ransm it t er operat es using t he baseband audio and video input s or, if t he ( opt ional) 4.5- MHz com posit e input kit is purchased, eit her a single com posit e video + 4.5- MHz input or separat e baseband video and audio input s. AURAL UNLOCK (DS5) – Red I ndicat es t hat 4.
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UHF Analog Driver/ Transm it t er Chapt er 5, Det ailed Alignm ent Procedures MONO SET UP: The m odulat or was fact or y set for a ± 25- kHz deviat io n wit h a m ono, balanced, audio input of + 10 dBm . I f t he reading is not at t he correct level, adj ust t he MONO Audio Gain pot R110, locat ed on t he fr ont panel of t he m odulat or , as necessar y , t o at t ain t he ± 25- kHz deviat ion on t he front panel scr een.
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UHF Analog Driver/ Transm it t er Chapt er 5, Det ailed Alignm ent Procedures Module. The adj ust m ent s are t hreshold set t ings t hat ar e adj ust ed as needed t o correct for any am plit ude or phase int erm od problem s. Adj ust t he t op linearit y correct ion adj ust m ent R211 t hreshold cut in for t he in phase am plit ude dist ort ion pre - cor r ect ion t hat is needed.
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UHF Analog Driver/ Transm it t er Chapt er 5, Det ailed Alignm ent Procedures Cont rol board, for 0% visual out put . Perform t he following adj ust m ent s wit h no aural present by rem oving t he aural I F carrier j um per on t he back of t he chassis assem bly . Connect a sy nc and black t est signal t o t he v ideo input j ack of t he t est m odulat or . Sw it ch t he t r ansm it t er t o Oper at e. R163 on t he power am plifier m odule t o a 10% reading.
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UHF Analog Driver/ Transm it t er Chapt er 5, Det ailed Alignm ent Procedures t he Out er Sleeve and t he Cent er Rod of t he Not ch can be adj ust ed t o t une t he Not ch Fr equency . The Dept h of t he Not ch is set by t he gap bet w een t he Cent er Conduct or of t he Tr ap Sect ion and t he Cent er Conduct or of t he Main Line. Tight Coupling m akes a Deep Not ch, while Loose Coupling m akes a Shallow Not ch.
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APPENDI X A LX SERI ES ANALOG SYSTEM SPECI FI CATI ONS
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Innovator฀LX฀(Preliminary) Low฀Power฀Transmitter฀10W-6kW Designed฀to฀provide฀broadcasters฀with฀a฀product฀that฀will฀meet฀their฀needs฀like฀ no฀other฀solution฀on฀the฀market,฀this฀new฀low฀to฀medium฀power฀transmitter฀ line฀uses฀the฀latest฀LDMOS฀devices฀for฀broadband฀operation฀across฀the฀entire฀ UHF฀band.฀This฀allows฀users฀to฀minimize฀spare฀parts฀stock,฀which฀is฀especially฀ important฀to฀group฀owners฀and฀networks,฀and฀also฀enables฀simple฀and฀ inexpensive฀channel฀changes.
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Innovator฀LX฀(Preliminary) Low฀Power฀Transmitter฀10W฀-฀6kW Visual฀Performance Visual฀Performance฀(continued) Frequency฀Range฀ 470฀to฀806฀MHz Carrier฀Stability฀(Transmitters)฀ ฀ Standard฀ ±1฀kHz฀ ฀ Optional฀฀ ±350฀Hz ฀ w/PFC฀ ±1Hz Frequency฀Translation฀Stability฀(Translators)฀ ฀ Standard฀ ±1฀kHz฀ ฀ Optional฀ ±350฀Hz฀ ฀ w/PFC฀ ±1Hz฀ Regulation฀of฀RF฀Output฀Power฀ 3% Output฀Variation฀(Over฀1฀Frame)฀ 2% Sideband฀Response฀ ฀ -1.25฀MHz฀and฀below฀ -20฀dB ฀ -0.75฀to฀-0.5฀MHz฀ +0.5฀db,฀-2฀dB ฀ -0.5฀to฀+3.
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APPENDI X B DRAWI NGS AND PARTS LI STS
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UHF Analog Driver/ Transm it t er Appendix B Drawings and Part s List s I nnova t or LX Se r ie s Ana log Syst e m LX Series 10W t o 100W Syst em Block Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1302139 Ch a ssis Asse m bly , 1 1 0 V AC Ex cit e r , LX Se r ie s I nt er connect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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UHF Analog Driver/ Transm it t er Appendix B Drawings and Part s List s Swit ch Board Schem at ic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1527- 3406 Pow e r Am plifie r Asse m bly - 1 3 0 1 9 2 3 I nt er connect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .