TFT EBS 760 Series Скачать руководство пользователя страница 20 | Manualshive

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Содержание EBS 760 Series

Страница 1: ...www SteamPoweredRadio Com I I I I I I I I I I I I I I I I operating and Service Ma nua 1 EBI IYITEffl fflODEt 760 TIME AND FREQUENCY TECHNOLO GY INC...

Страница 2: ...and returned to the BUYER with transportation charges prepaid by TFT Transportation charges for instruments found to be defective within the first thirty 30 days of the warranty period will be paid bo...

Страница 3: ...Figure 6 4 Tone Generator Schematic Material List Change C2 lO00pf Part No 1005 1000 to a 1200pf Part No 1007 0012 Figure 6 5 Tone Decoder Schematic Material List REMOVE Fl a 2A Slo Blo Fuse Part No...

Страница 4: ...ine from the junction of Zl 6 and R43 to center tap of L3 Tone Generator Schematic Material List Change C2 l000pf Part No 1005 1000 to a 1200pf Part No 1007 0012 Tone Decoder Schematic Material List R...

Страница 5: ...o Tone Generator after each tone transmission before making Emergency announccments or maybe forget to reset There are several ways to implement the automatic reset One way is to modify the generator...

Страница 6: ...enna Installation 2 4 Sect Ion 3 Dperaclon Sect Ion 4 Section 15 3 1 General 3 2 AM Receiver 3 3 FM Receiver 3 4 Two Tone Generator 3 4 1 Basic Operation 3 4 2 Remote Control 3 4 3 External Audio Swit...

Страница 7: ...two tone signal received from the AM or FM station being monitored will be heard on the EBS System speaker after such a tone has been received for at least 8 seconds The EBS System provides the means...

Страница 8: ...inal per tone 600 ohms balanced Less th n 2 23 4 seconds 0 15 seconds Front panel pot 2 dBm to 8 dBm Rear panel DPDT relay contacts Balanced input and output Switchover and latch to EBS programming is...

Страница 9: ...for suggested circuit Total external relay current must not exceed 250 ma Two Tone Generator a If the monaural program audio is to be looped through the Two Tone Generator connect the program input li...

Страница 10: ...CR 2 I I 0 I I I 0 1 r df Kl K2 I I I I I I I 1 kn I CR3 3 _ I I o I o lo _ _ I I Kl AM AUDIO IN AM AUDIO OUT FM LEFT AUDIO IN FM LEFT AUDIO OUT FM RIGHT AUDIO IN FM RIGHT AUDIO OUT TV AUDIO IN TV AU...

Страница 11: ...by removing Resistor R46 from the module The board on which this Resistor is mounted is marked CUT in two places to facilitate the removal 2 3 a Connect the rear panel AUDIO INPUT terminal to the RECE...

Страница 12: ...ear Panel 2 4 Antenna Installation If a local FM antenna is not available any conventional FM or TV antenna is satisfac tory Ifa local AM antenna is not available an end fed long wire antenna approxim...

Страница 13: ...d light indicating that the dual tone audio signal is being delivered to the transmitter for a period of 23 4 seconds At the end of the tone period emergency announcements can be made on the audio cir...

Страница 14: ...will exist until the RESET switch is operated at which time the speaker circuit will again be muted and the alarm relay will be deenergized I FM RECE IVER I I TONE nFCJ DEI I lll CMll Nll 2 CAIi MODE...

Страница 15: ...nel thumbwheel switches St are decoded by the logic circuitry of gates 21 through 24 to cause the divide by N divider to divide the output frequency of 4 1 oscillator Zt 1 by the appropriate number to...

Страница 16: ...hout interrupting normal programming The 853 Hz tone is generated by dividing the 3 2552 MHz output ofcrystal oscillatorQ2 by 3840 in the 4 2 divider chain consisting of 216 215 214 and 213 When pin 9...

Страница 17: ...t ofZ4 4 to return again to 5 volts Thus the emergency signal 4 3 will produce two positive going pulses at the clock input pin 6 of ZS The Qoutputs of the two ZS flip flops are normally at logic 0 bu...

Страница 18: ...7 02 a Sensitivity 1 Connect a Signal Generator HP8640B 5 1 or equivalent to the ANTENNA input on the rear panel with its frequency at the receiver s channel frequency and its fre quency deviation se...

Страница 19: ...T INPUT on the Decoder and TEST OUT on the Generator Connect a jumper wire between the AUDIO UNBAL and 5 2 AUDIO INPUT terminals of the Receiver and Decoder respectfully Tune the Receiver to a local c...

Страница 20: ...IN OHMS 1 4 WATT 2 CAPACrTORS VALUES IN IUCROFARADS 3 INDUCTORS VALUES IN IOIICROHENRYS tlO I 4 FACTORY SELECT VALUE TYPICAL VALUE SHOWN S VOLTAGES ARE DC CONDITIONS 2 3 4 R 3 70K Rl t 70K I 2A S II...

Страница 21: ...1065 4701 1065 1004 1069 0202 1065 1202 1065 J002 1069 0202 1065 1502 1065 2201 1065 7501 1069 0502 1065 4701 1065 2703 1065 2703 1065 2703 1065 2703 1065 1004 1065 4703 1065 4701 1065 4701 1065 1004...

Страница 22: ...TENNA IIIJPUT 5 ISV UNREGULATED 10 sv oc SV DC OOUBLER 4 3 S 5 3 35 M 1 CR STJIL DSC DE LAYE D AGG T 6 vcc vcc 10 7t ll1 I F t MPLll IER QUADRATURE OCTEC TOR 6 oJ 7 8 IEYI I NS DISUIPIION DI CHK AUTH...

Страница 23: ...CJ7 33 p Disc CeramK rs lOOS OllO Sprilgue R6l 3 3KO V w 5 CarbonComp 106S 3l01 A 8 CJ8 33pl DiscCeramM ts 1005 0 JO Sprague R6 HKO V w 51 CarbonComp 1065 llOl A 8 CJ9 240pl Dura Mica i 5 1001 0241 E...

Страница 24: ...MICROFARADS 3 INDUCTORS VALUES IN lrllCROHENRYS HO 4 FACTORY SELECT VALUE TYPICAL VALUE SHOWN 5 VOLTAGES ARE OC CONDITIONS t UAL 1 Jl jf SHOWI I WMEtJ tJGLE C HAIJW L IS IEQVll tEb t LETE C 1 C71 C 1...

Страница 25: ...onComp 1068 0015 2 Pin Mokx ConnectOf 22W 0020 Heat Sink 2010 6030 Model 7eG 04 Two Tone Genere or Con lnued Mfg 01 ad Dncriptioa TfT Rll 12KO V w H I Carl onComp R19 12KO V w 5 CarbonComp Sprague a o...

Страница 26: ...W zl Tl TI 4002 fo 20 C 2 I Il Tfi I _A J Ok R22 R2 I Y 1 1 I 1 4 1 I L I V 5 1 __l_ 480 R 74 lJ1__ 5 t 1 I_ ___ 5 1 t 1 L 1 13 747 JL r fi 7 Z3 10 _____ REn oTI I commArvo P lo r3 NOTES UNLESS OTHER...

Страница 27: ...5 CarbonComp R40 7500 14w 5 CarbonComp R 1 I SO Y w s CarbonComp R 2 SQ 10w 10 RO 220 0 I w 51 CarbonComp R 1200 w 5 CarbonComp R 5 0 14 w 5 Carbon Comp Swilclaes SI 2 Po ition SPOT S2 Momentary SPDT...

Страница 28: ...P 0 J Z 1f t o N 0 C20 I PIO CR 1 IN30G 4 I C RI JV 508 2 4487 POWE R 6 S N C 7 C J3 15V DC UtJREGULATED 10 5V 5V GNO 1 15V DC UIIJREGULATED I0 SV SV GJO NOTES UNLESS OTHERWIIIE SPt CIFIED JTEM EN NO...

Страница 29: ...ALUES IN OHMS S I I WATI 2 CAPACITORS VALUES N MICROFARAD6 3 ll i DUCTORS VALUES N IUCROHENRYS 10 C46 10 I 5 J 4 FACTORY SELECT VALUE TYPICAL VALUE SHO t N 5 VOLTAGES ARE DC CONDITIONS 5 6 Q9 Rw 180 T...

Страница 30: ...Q 2N 275 1271 275 Fairchild lni ton RI 7 KO w S A CarbonC Omp 106S 4701 A 8 l9KO Vow 5ft CarbonC Omp 106S 902 A 8 Rl 56KO w s CarbonComp 106S S602 A 8 R 56 KO w Sft Carbon Comp 1065 5602 A 8 RI llOO w...

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