SEA 1612C Instruction And Maintenance Manual Download Page 1

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Summary of Contents for 1612C

Page 1: ...T T r t T t r T t I _ 5 F f f i E _ E r E h a n b h ffi H E r r I...

Page 2: ...61 zVU r161zWX AUTOMATICANTENNATUNER INSTBUCTION AND MAINTENANCE MANUAL Copyright1993 1994SEA Inc All rights reseryed SEAInc 7030 2201h sr s w Mountlake Terrace Washington98049 425 771 182 FAX 42s 771...

Page 3: ...T NOTICE TO INSTALLERS The 1ffi2D is designedto be weatherproof when properly installed Be sure all fasteners are tight and cableentries sealed No warranty claimswill be allowedfor water damageto the...

Page 4: ...equency Counter 3 3 Phase Detector 3 4 TheControl Computer 3 4 Initialization And Fireup 3 4 lnformationFlead 3 5 InformationWrite 3 5 TheProgr am 3 5 INSTALLATION PFOCEDURE 4 1 Mechanicat Considerati...

Page 5: ...LISTOF FIGURES FIG FIGURE MME 1 3 Outline andMounting Dimensions 3 1 NetworkConfigurations 3 2 6 1 AntennaTunerSchematic ASY 1616 01 6 2 CircuitBoardLayout...

Page 6: ...ervention lf the antennasystem is altered or replaced the tuner will automatically relearn the required networks During the learning period operation is somewhat slower and depending on the particular...

Page 7: ...L network wheneverpossible the L networkwill be selected for maximumefficiency Tuneup is entirery automatic and may be accomplished on voicesignals making it unnecessary to providea low powertune mod...

Page 8: ...12 6 I A l rt f D t ra ftt tfIED IFN L 6S8 r rtuNrc TroNg EIF T 1 6 1 osmm lztzmm f 11 t2eemml l I I I L_ SEA 1612C ANTENHA TUNER OUTLINE MOUNTING DIMENSIONS FIGURE1 3 1 3...

Page 9: ...nt hardware and passivatedalroys are employed throughout stufflngglandsfor the RF and Dc cablesare provided on the lower edge of the weatherhousing along with a 1t4 ZO stainlesssteel groundstud The an...

Page 10: ...urrent 2 Ampsmax TuningTime LearnMode typically lessthan5 seconds Educated Mode approximately 20 milliseconds Recommended 23 75ft 7 23meters 1 6 30MHz AntennaLength I ft 2 7 meters whip 3 30 MHz Mount...

Page 11: ...2 2 PARTS FURNISHED 1 Antenna TunerwithCoverand Bushings 2 Instruction Manual 2 2...

Page 12: ...connected to the TND lineon the radio srearpanelconnector AUTO TUNE OPERATION WhenRF poweris applied to the SEA 1612Cit is firstpassed throughan array of detectors which determine the frequency load...

Page 13: ...boththe FORWAHD powerand REFLECTED power signalsand both are clampedto the 5 Volt rail through diodesCRZ and CR4 to preventoverdriving the A D converter inputs of CPUchip U5 With voltagesrepresenting...

Page 14: ...U1F can be diode ORed into the input of U1B by puttinga shortingbar on the pins of JU4 With JU4 thus jumpered an interruptsignal is generatedwhenever the PTT input line goes low Note that if this opt...

Page 15: ...ether with relaydrivers u11 u12 and u13 ug ug and u10 forma serialto parallel interface port clocK and DATAsignarsare providedfrom CPU ports pB7 and PBs respectively In operation data is transferredin...

Page 16: ...U1F can be diode ORed into the input of U1B by puttinga shortingbar on the pins of JU4 With JU4 thus jumpered an interruptsignal is generatedwhenever the PTT input line goes low Note that if this opt...

Page 17: ...ested and found incorrect the program will initiatea tuneup sequence By examinationof the phase detectorthe determination is made that the antenna is short capacitive at the drive frequency and so ser...

Page 18: ...frequency Normally this creates no problem but in specialcases particularly when the antennasystemis short the groundsystemgood and the receiver frequency is lar removed from the transmitter frequenc...

Page 19: ...ineafld Mounting Dimensions for detailsregarding the location of the mounting holesfor the SEA 1612C Although the SEA 1612Cmay be mounted in any attitude care should be takento insurethat the location...

Page 20: ...onnect for power shieldground the ALLTUNED flagandwhendesired the DEMAND TUNE and or TUNELOCKOUT features DC Poweris connected to terminals 1 and 2 of P1 Pin 1 is the negative terminal and pin 2 is th...

Page 21: ...onal wattmetersuch as the BlRDtm Model 43 insertedinto the transmission line and the transmitter energized upon application of RF energy the sEA 1612C shouldbegin to tune indicatedby a general clatter...

Page 22: ...e memorized by the computer it shouldbe possible to returnto a previously used frequency and discover that the computer immediately flashes the ALL TUNED flag usually bsf619 ths first syllabteis compl...

Page 23: ...laydriver pin with a shortjumperwire eg To test K0 groundPin 16 of U11 The jumpersimulates the operation of the open collector driver transistor between Pins1 and16 of U11 Individual relaydriversmay b...

Page 24: ...does not solve the problem checkfor bentpinson the socketed l C s 6 Usinga suitable oscilloscope checkthe RF levelpresent at Pin 13 of U1 A levelof approximately I V p p should appearwhenan RF signalo...

Page 25: ...f U5 is pulsedlow when RF poweris appliedto J1 You must have forwardpowerpresentwhich will causePin 12 ol U3 to outputa squarewave 4 The mOSt COmmOn prOblemS enCOuntered under no tune conditions haveb...

Page 26: ...secondbeforepultingthe DEMAND TUNE line low The tuner must turn off the crockbeforeit can acknowledge a second DEMANDTUNE signal This conditionwill occur 1 second after loss of forward power withthe D...

Page 27: ...o fi cH H 8...

Page 28: ...9 H 4 o H t r o F o Ea 6 G v t lg t F i 1 al rD I t t I t I I i D T_ trlfl r i u li i i s v T v __t LJ o h ft t t I L lH...

Page 29: ...O o S u l r E f i a l rlJ o E o o E ut z F z z l u 1 6 Z 2 Fl tiil dr L iiiri ilrr l ir t_ i il n r i lirll i i i 1 l i ii l i iiiil i ii itil r r rtr i r t t i l i r...

Page 30: ...r r r B l 1 s 9 6 I I I 2 4 6 I 1 C t t i N N N N N I N N j IT R IT D N QUAN I rl a 1 L 1 Ul B 1 0 0 0 0 0 0 BOXNC 000 uoxNc 000 I OXNG OOO I OXNG OOO I3OXNG OOO lloxNc 000 FINAL OO I TNAI OOO IIINAI...

Page 31: ...siutt00 5Y 1612 16 P0sI000 5I 1 l I3 STUIF 000 AsY r630 l l sIUff000 ist 1630 12 STI IF 000 sY 1630 3 msi 000 si 1030 Tl Stl lF 000 crl 0003 01 lI0utToR 1 utl I A I iDtjCTOR t i iIDUCTOR I 9 1 r tilt...

Page 32: ...0003 021 ciP clT0R DHg200PF B i I EI 0ll 9 t23li 0 c 3 c 1 sTUFf 000 cir 0013 001 cAP lctr0R y0 i0 ttjF Bli I 6 0 1 0il595 l23t 9 0 0 0 c c 4 c 5 c 8 c g c l 0 c l l c l 2 c l 3 c c l 5 c l g c t g c...

Page 33: ...5 0001 r03 DESIRlPTIO I Plr SlIGl n HOu fif r0fiR J U J U J U I Rf stsT0lt l0ol H R28 R31 l I T I t i I l u A I 0sT 000 cP l 0011 00 P0sT 000 rus 0003 002 sTLrFr 000 rtls 0lj01 003 SrijrF 000 lt in 0...

Page 34: ...0 Rt s 0001 02 BtislsToft 2l ll fi BI I Hr 011595 r23t 9 0 0 0 R R 8 SiljFl 00 RES 0001 I2 RliSlST0 i fi l 4ii l I I t t t 0il09r tzti g 0 It56 Ri sTljlrf 000 Rfs 0001 3 l Rl slsTofl 300 I 1h I I I 2...

Page 35: ...00 SEI 01I0 09 09 cl0ssnlFT sIoRF Rlic BNI I E 0ll59il33l 0 0 0 u 1 0 sTuFF 000 stjy 01 1t 0 4 ci1 ti 05 OljAL 0 Fl lP l tl i i I E l 0lli95123179 0 0 STtitF 080 5rr 0t r3 t02 tic 02 c 05 Brs i rl lll...

Page 36: ...0e2res ull E urilBc Tv i lFi lt rcg f8i tFF cIIHTt scR P ttsf s QI c0w0IEIT DISCRII TI0S s TTrli0t TQtlrITlIt rrt rr o jT LT0s pcIT SiLrfF 000 s0c 000 018 It S0cti8l 8PIIDtp Bli I I ti 011595 l 31T9...

Page 37: ...RSHIPPING BOX F O X N G O O O B O X L 6 L 2 0 0 3 N L I E A B N 0 1 1 5 9 5 L 2 3 L 7 9 RnVBRSTBLEINSER L6r2B r B O X N G 0 o O I 4 A N 1 6 1 2 C N 1 I 8 A 5 N 0 1 1 5 9 5 L 2 3 t 7 9 SEA 1612C MAINTE...

Page 38: ...0 A S v 1 6 1 6 9 t 0 1 N L r E A M N 0 1 _ 1 5 9 5 1 2 3 1 9 o o o L6l_2w couPLER BOARD TESTED 0 0 0 0 0 0 A S y l 6 0 0 0 1 N 1 r E A H N O I _ t _ 5 9 5 2 3 1 7 9 O O O COUPLER BOX 0 0 0 0 0 0 L B...

Page 39: ...NG BOX B O X 5 1 2 O 0 3 N 1 r E A REVERSTBLETNSERT L6La ll L M A N 6 T 2 C N 3 I E A SEA 612C TII AINTENANCB IIIANUAI K r r 1 6 L 2 w 9 9 N 1 r E A HARDWARE KIT L6L2W L612t lX L B L r O O 0 0 1 N 1 r...

Page 40: ...4N 0l_t 595 L23L79 0 0 O 1512r COUPLERBOARD TESTED o o o o o 0 A S y 1 6 0 0 O L N 1 r E A U N 0 L l _ 5 9 5 L 2 3 L 9 0 0 0 COUPLER BOX 0 0 0 0 0 0 L B L 1 6 1 2 A O 2 N l r E A B N 0 t L 5 9 s L 2 3...

Page 41: ...TN OUT POST OOO ASY T6L2 3 TRANSFORHERPHASE M N I T3 posT ooo ASY 1630 T1 XFORMER T63A 330 POWER DE M N I I T T POST OOOCRY 0011 OO2 CRYSTAL COLOR BURST 3 579545 HC 18 B N I Y1 POST 000 FUS OOOz OO2 F...

Page 42: ...4 REV EFFECTIVITY DATEI O 1901 EFFECTIVE REV F t H c e R E v USE SEQN COMPONENT DESCRIFTION B T T IN OUT Tnsr 000 0ps 1612c u5 0pERATTNGSyS 16r2C PROG l t N r U5 POST OOOpST 163 6r I 0L t612li COUPLER...

Page 43: ...0 R E L 0 0 0 5 0 0 2 N 1 r E A B N 0 5 3 0 0 0 L 2 3 L 7 9 0 0 0 DPDT 12V RF RATED RELAY o00 000 sEM 0087 001 N t r EA B N 053000 L23L79 0 0 0 N4OO4DIODE GP RECTIFIAR o00 000 r IR 0008 000 x 4 I FT B...

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