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Harris Gates Five 994 9204 002, Техническое руководство

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929 8305 687 . . . . . BRACKET, CAP MTG . . . . . . . . . . . . . . . . . 2.0 EA

#A21C03

929 8305 694 . . . . . STRAP, A2A1, TO A3A1 . . . . . . . . . . . . . . . 1.0 EA

#A02A01 #A03A01

939 5695 403 . . . . . ANGLE, A21C1 MTG. . . . . . . . . . . . . . . . . . 1.0 EA
943 3777 014 . . . . . COIL, FIXED 13 TURN . . . . . . . . . . . . . . . . 1.0 EA

A21L1

943 5450 475 . . . . . CBL, PA DRIVE COAX 44" LG . . . . . . . . . . 2.0 EA
994 7784 002 . . . . . COIL CLIP 3/8 RIBBON. . . . . . . . . . . . . . . . 1.0 EA

#A21L07

994 7784 003 . . . . . COIL CLIP 1/2 RIBBON. . . . . . . . . . . . . . . . 1.0 EA

Table 6-8. GATES TWO CONV PARTS - 992 8159 001

Harris PN

Description

QTY UM

Reference Designators (AN)

335 0256 000 . . . . . WASHER, SHOULDER .765 ID . . . . . . . . . 4.0 EA

#A19CR1 #A19CR2 #A19CR3 #A19CR4

335 0257 000 . . . . . WASHER, KAPTON .687/1.625 . . . . . . . . . 4.0 EA

#A19CR1 #A19CR2 #A19CR3 #A19CR4

357 0092 000 . . . . . NUT, HEX 1/4-20 TEFLON . . . . . . . . . . . . . 1.0 EA
358 0004 000 . . . . . BRACKET RESISTOR MTG . . . . . . . . . . . . 2.0 EA

#A19R21

358 2635 000 . . . . . CABLE TIE, PUSH MOUNT SNAP IN. . . . . 2.0 EA
358 3123 000 . . . . . STUD, BRS 10-32 X 1-1/2. . . . . . . . . . . . . . 1.0 EA
384 0839 000 . . . . . RECT 1000PIV 275A 1N4056 ESD . . . . . . 4.0 EA

A19CR1 A19CR2 A19CR3 A19CR4

472 1280 000 . . . . . XFMR, PWR, 829-8305-087 . . . . . . . . . . . . 1.0 EA

A19T1

516 0413 000 . . . . . CAP, RF, 10PF 7.5KV 10% NPO . . . . . . . . 1.0 EA

A18C1

524 0341 000 . . . . . CAP 5100 UF 350WVDC. . . . . . . . . . . . . . . 2.0 EA

A19C1 A19C3

614 0158 000 . . . . . TERM STRIP 2 TERM. . . . . . . . . . . . . . . . . 1.0 EA

TS002

614 0720 000 . . . . . *TERM BD 6 TERM . . . . . . . . . . . . . . . . . . . 1.0 EA

TB001

620 0831 000 . . . . . T ADAPTER BNC UG-274A/U . . . . . . . . . . 1.0 EA

J002

620 1906 000 . . . . . END TERM, 7/8 EIA FLANGE. . . . . . . . . . . 1.0 EA

J001

632 1152 000 . . . . . AMMETER, 0-40ADC, 4.5",[W] . . . . . . . . . . 1.0 EA

M003

632 1156 000 . . . . . WATTMETER, 0-5KW, 4.5",[W] . . . . . . . . . 1.0 EA

M004

813 5001 071 . . . . . STDOFF 10-32 X 1.75 3.8 HEX . . . . . . . . . 1.0 EA
813 5007 026 . . . . . STDOFF 6-32X1/2 1/4 DIA . . . . . . . . . . . . . 1.0 EA
817 0914 101 . . . . . STANDOFF, HV RECT . . . . . . . . . . . . . . . . 2.0 EA

#A19CR1 #A19CR2

817 0914 195 . . . . . STANDOFF, INSULATED 1.5LG . . . . . . . . 4.0 EA
817 0914 261 . . . . . SPACER, .75ODX.256IDX1.7 . . . . . . . . . . . 2.0 EA
817 0914 350 . . . . . STANDOFF, PA GROUND . . . . . . . . . . . . . 1.0 EA
822 0981 009 . . . . . MULTIMETER SW PLT. . . . . . . . . . . . . . . . 1.0 EA
822 0981 011 . . . . . COVER PLATE . . . . . . . . . . . . . . . . . . . . . . 2.0 EA
822 0981 012 . . . . . COVER PLATE . . . . . . . . . . . . . . . . . . . . . . 1.0 EA
822 0981 013 . . . . . COVER PLATE . . . . . . . . . . . . . . . . . . . . . . 1.0 EA
829 8305 389 . . . . . BRACKET, RECTIFIER. . . . . . . . . . . . . . . . 1.0 EA

#A19CR1

829 8305 623 . . . . . RETAINER, CABLE. . . . . . . . . . . . . . . . . . . 1.0 EA
839 7920 103 . . . . . ASSY INSTR, MOD COIL . . . . . . . . . . . . . . 0.0 EA
917 0914 222 . . . . . XFMR, PHASE ANGLE 44T . . . . . . . . . . . . 1.0 EA

A18T1

917 0914 250 . . . . . RES, METERING SHUNT . . . . . . . . . . . . . . 1.0 EA

A19R6

917 2131 007 . . . . . PHASE ANGLE XFMR . . . . . . . . . . . . . . . . 1.0 EA

A18T2

922 0981 080 . . . . . SHUNT . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.0 EA

A19R7

929 8305 301 . . . . . CLAMP, MODIFICATION . . . . . . . . . . . . . . 6.0 EA
929 8305 395 . . . . . BRKT, H V RECT . . . . . . . . . . . . . . . . . . . . 1.0 EA

#A19CR2

929 8305 732 . . . . . XFMR, IPA NEUTRALIZER. . . . . . . . . . . . . 1.0 EA

A26T2

939 7920 017 . . . . . METER TRIM . . . . . . . . . . . . . . . . . . . . . . . 1.0 EA
939 8187 001 . . . . . INSULATOR, PA MODULE . . . . . . . . . . . . . 2.0 EA
943 3655 196 . . . . . HEATSINK, PA . . . . . . . . . . . . . . . . . . . . . . 1.0 EA
943 5479 025 . . . . . PANEL, REAR ACCESS, GATES TWO . . . 1.0 EA
992 5868 008 . . . . . PWA, PA TOROID

ESD SAFE . . . . . . . . 1.0 EA

A4A1

992 5872 007 . . . . . * PDM PULL UP BOARD * . . . . . . . . . . . . . 2.0 EA

A6A1 A7A1

992 5874 009 . . . . . PWA, PDM FILTER

ESD SAFE . . . . . . . 1.0 EA

A010

992 8228 001 . . . . . CBL PKG GATES TWO . . . . . . . . . . . . . . . 1.0 EA

Rev.AD1: 1/15/02

888-2314-001

6-7

WARNING: Disconnect primary power prior to servicing.

Содержание Gates Five 994 9204 002

Страница 1: ...VE 1 PHASE 994 9204 002 GATES FIVE 3 PHASE 994 9205 002 T M No 888 2314 001 Printed 1990 Copyright 1990 1991 1992 1994 1995 1996 1998 1999 2000 2001 2002 Rev AF 06 21 02 Harris Corporation All rights...

Страница 2: ...K LISTs Use the PACKING CHECK LIST to help locate and identify any components or assemblies which are removed for shipping and must be reinstalled Also remove any shipping supports straps and packing...

Страница 3: ...K 3 and all of section VI N Feb 1994 38895 Replaced Title Page MRH 1 MRH 2 and pages F 4 F 5 P July 1994 39302 Replaced Title Page MRH 1 MRH 2 and all of section VI R Dec 1994 39223 Replaced Title Pa...

Страница 4: ......

Страница 5: ...ll of material is equivalent to C1 on the schematic or 2 gives added information or further explanation i e Used for 208V operation only or Used for HT 10LS only etc Inside the individual tables some...

Страница 6: ...iv 888 2314 001 Rev X WARNING Disconnect primary power prior to servicing...

Страница 7: ...ection Association NFPA standards are recommended as reference Automatic Fire Detectors No 72E Installation Maintenance and Use of Portable Fire Extinguishers No 10 Halogenated Fire Extinguishing Agen...

Страница 8: ...vi 888 2314 001 Rev X WARNING Disconnect primary power prior to servicing...

Страница 9: ...eep them elevated NOTE If medical help will not be available within an hour and the victim is conscious and not vomiting give him a weak solution of salt and soda 1 level teaspoonful of salt and 1 2 l...

Страница 10: ...Output Calibration 3 5 Overload Adjustment Procedures 3 6 Power Supply Current Overload 3 6 Underdrive Fault 3 6 VSWR Detector 3 6 Replacing Boards and Replacing Board Components 3 6 SECTION IV TROUB...

Страница 11: ...t A 1 Open Fuse Loss of 20V A 1 RF KILL A 1 Q1 Q2 CR1 A 1 U1 CR4 A 1 U2 A 1 U3 A 1 SECTION B IPA A5 Principles of Operation B 1 IPA Tuning Network B 1 Replacement Alignment B 1 IPA Tuning and Testing...

Страница 12: ...ault Detection J 2 Controller Supply Voltages J 2 Replacement Alignment Procedures J 2 PA Voltage Electrical Zero J 2 PA Volt Meter Calibration J 2 Power Supply Current Calibration J 2 Power Output Ca...

Страница 13: ...verall pro vides theory of operation of the vari ous sections of the transmitter not covered in later sections Section VI Parts List provides parts list for the transmitter The following sections prov...

Страница 14: ...ILITY Greater than 130 positive peak program modulation capability at 1100 watts INCIDENTAL QUADRATURE MODULATION IQM 30 dB typical below 95 modulation of L R channel at 1 kHz AUDIO INPUT Continuously...

Страница 15: ...PEAK CAPABILITY Greater than 130 positive peak program modulation capability at 2750 watts INCIDENTAL QUADRATURE MODULA TION IQM 30 dB typical below 95 modulation of L R channel at 1 kHz AUDIO INPUT C...

Страница 16: ...ility at 5600 watts INCIDENTAL QUADRATURE MODULA TION IQM 30 dB typical below 95 modulation of L R channel at 1 kHz AUDIO INPUT Continuously adjustable from 10 to 10 dBm transformer less active 600 oh...

Страница 17: ...ectly over the components dissi pating heat and exhausts through the output coils and out the top of the transmitter The circuit cards and their heat sinks have been designed to provide a chimney acti...

Страница 18: ...a path for the zero sequence currents as well as any har monic currents which are generated due to the rectification of the secondary voltages Today many transformers are supplied with all of the prim...

Страница 19: ...ding will help keep stray RF current to a minimum RF interference usually shows up in one of several ways intermittent problems with digital or remote control circuits audio feedback or high pitched n...

Страница 20: ...an OFF condi tion and all overload lights lit A standard 9 volt battery will last about 2 weeks of continuous running with no AC powerapplied Alkalinebatterieswillgivethe longest shelf life It is a go...

Страница 21: ...connected e Transmitter output is properly termi nated into a suitable load capable of handling rated output power antenna or dummy load f Audio input is properly connected g Monitoring equipment is...

Страница 22: ...ing to zero u Compare the present readings against the factory data for any major discrepan cies If any exist it should be investi gated at this time v Progressively step the power level up ward by se...

Страница 23: ...n your monitor and change the audio polarity if the need is indicated 2 7 4 Remote Meter Calibration The remote sample outputs of the trans mitter are designed to be compatible with most modern day re...

Страница 24: ...volt dc supply PDM Pullup Resistors Shield shown covering 250 watt resistor s used by PDM Pull up circuits Low Voltage Transformer A20T1 Secondary for 20VDC 20VDC 24 VAC and IPA Supply 60 75 90 105 12...

Страница 25: ...ial turn on Phase Monitor Detects loss of phase on primary AC input power and has capability to detect low primary AC input voltage 3 phase GATES FIVE only FAN Circuit B r e a k e r s A20CB2 A20CB3 Pr...

Страница 26: ...ble 2 7 GATES ONE Typical Readings at 1340kHz Power Output 2500W 2000W 1500W 1000W 500W 200W PA Volts 98 5 90 0 79 0 66 0 50 0 35 0 PA Amps 28 7 26 1 23 0 19 0 14 0 10 0 PDM Level 6 8 6 2 5 5 4 6 3 4...

Страница 27: ...0 0 0 0 0 0 VSWR Detector Null Set 5 1 5 1 5 1 5 1 5 1 5 1 Underdrive Set 6 7 6 0 5 3 4 4 3 3 2 5 Supply Current Set 44 8 44 8 44 8 44 8 44 8 44 8 Supply Voltage Set 297 297 297 297 297 297 Battery 9...

Страница 28: ...2 12 888 2314 001 Rev AC 2 29 00 WARNING Disconnect primary power prior to servicing...

Страница 29: ...ose screws bolts and nuts Do not tighten indiscriminately as fittings that are tightened beyond the pres sure for which they are designed may be damaged or broken CLEAN Clean parts only when inspec ti...

Страница 30: ...PRINTED CIRCUIT BOARDS Pre ventive maintenance of printed circuit boards is accomplished by performing the following steps Inspect the printed circuit boards for cracks or breaks Inspect the wiring f...

Страница 31: ...Figure 3 1 Cabinet Top Figure 3 2 Output Network Removed from Transmitter Rev AD 888 2314 001 3 3 WARNING Disconnect primary power prior to servicing...

Страница 32: ...NY TAPS ON THE TRANSFORMER If the High Voltage reading is too high the transformer primary needs to be changed to a higher setting If the High Voltage reading is too low the transformer primary needs...

Страница 33: ...d against an external meter using the follow ing procedure The external meter and its leads must be capable of accurately reading at least 12 amps for a GATES ONE at least 30 amps for a GATES TWO and...

Страница 34: ...th 400 Hz at 110 power output 5500 watts for GATES FIVE 2750 watts for a GATES TWO and 1100 watts for a GATES ONE Adjust R143 on the Controller board counterclockwise until the transmitter steps to th...

Страница 35: ...t draw by the Controller 4 4 Symptom Green Power Level Status LED s Illuminate but the Primary Contactors Do Not Energize and No Overload LED s Illuminate The contactors normally produce an audi ble c...

Страница 36: ...ultimeter to be sure it is at a normal value as indicated on the factory test data sheet This reading should not change un less a change has been made to the overload adjustment Check the actions of t...

Страница 37: ...rol Functions Do Not Work 4 8 1 Possible Causes 4 8 1 1 Remote Local Switch Check to see that the REMOTE LOCAL switch on the Controller is in the REMOTE position 4 8 1 2 Remote Control Improperly Wire...

Страница 38: ...z noise is actually generated in the trans mitter a bad rectifier is suspected The dominant noise frequency of a single phase full wave rectifiedpowersupply is normally twice the power line frequency...

Страница 39: ...ith the PA the PDM filter and the PDM Amplifiers in series The PDM Am plifiers purpose is to switch the PDM Filter inputs to ground at a 60 kHz rate For the sake of understanding a relay could be used...

Страница 40: ...Figure 5 1 PDM Flow Diagram 5 2 888 2314 001 Rev T Jan 1996 WARNING Disconnect primary power prior to servicing...

Страница 41: ...is connected to the PA modules by the Splitter board which distrib utes the RF drive through a separate multi coax cable to the PA modules The RF is then amplified and modulated on the PA modules The...

Страница 42: ...Figure 5 2 PDM Loop 5 4 888 2314 001 Rev T Jan 1996 WARNING Disconnect primary power prior to servicing...

Страница 43: ...Figure 5 3 RF Flow Rev T Jan 1996 888 2314 001 5 5 WARNING Disconnect primary power prior to servicing...

Страница 44: ...the transformer is cen ter tapped with two MOV s Metal Oxide Varistor across the secondary terminals for transient protection the same as on the high voltage power supply The center tap of the low vo...

Страница 45: ...6 Table 6 7 GATES TWO FINAL PARTS 992 8149 002 6 6 Table 6 8 GATES TWO CONV PARTS 992 8159 001 6 7 Table 6 9 GATES FIVE 1PH 994 9204 002 6 8 Table 6 10 BASIC GATES FIVE 1PH 994 9204 001 6 9 Table 6 1...

Страница 46: ...2 504 0410 000 CAP 1200PF 6KV 5 291 0 0 EA A21C03 A21C04 504 0411 000 CAP 1600PF 6KV 5 291 0 0 EA A21C03 504 0418 000 CAP 2700 PF 12KV 5 293 0 0 EA A21C01 FREQ DET 504 0419 000 CAP 3300 PF 12KV 5 293...

Страница 47: ...6414 001 CRYSTAL SELECTION LIST 0 0 EA A16Y1 OSCIL 1 REQD A17Y1 OSCIL OPTION 1 REQD 992 8146 002 OSCILLATOR PKG 0 0 EA A017 OPTION 994 9202 001 BASIC GATES ONE 1 0 EA 994 9238 001 R BK GATES SERIES 0...

Страница 48: ...UF 450V 2 0 EA A19C1 A19C3 614 0720 000 TERM BD 6 TERM 1 0 EA TB001 632 1153 000 AMMETER 0 20ADC 4 5 W 1 0 EA M003 632 1158 000 WATTMETER 0 1500W 4 5 W 1 0 EA M004 813 5002 048 STDOFF 10 32X7 8 1 2 H...

Страница 49: ...000 CAP 3900 PF 12KV 5 293 0 0 EA A21C02 FREQ DET 504 0433 000 CAP 3600PF 12KV 5 293 0 0 EA A21C01 A21C02 FREQ DET 504 0434 000 CAP 4000PF 12KV 5 293 0 0 EA A21C01 FREQ DET 504 0435 000 CAP 5600PF 10K...

Страница 50: ...ASIC GATES TWO 994 9203 001 Harris PN Description QTY UM Reference Designators B 992 8143 001 BASIC GATES SERIES XMTR 1 0 EA 992 8149 002 GATES TWO FINAL PARTS 1 0 EA 992 8159 001 GATES TWO CONV PARTS...

Страница 51: ...A J001 632 1152 000 AMMETER 0 40ADC 4 5 W 1 0 EA M003 632 1156 000 WATTMETER 0 5KW 4 5 W 1 0 EA M004 813 5001 071 STDOFF 10 32 X 1 75 3 8 HEX 1 0 EA 813 5007 026 STDOFF 6 32X1 2 1 4 DIA 1 0 EA 817 091...

Страница 52: ...00PF 12KV 5 293 0 0 EA A21C03 A21C04 FREQ DET 504 0417 000 CAP 910PF 20KV 5 293 0 0 EA A21C03 FREQ DET 504 0418 000 CAP 2700 PF 12KV 5 293 0 0 EA A21C03 A21C04 FREQ DET 504 0419 000 CAP 3300 PF 12KV 5...

Страница 53: ...A 992 8160 001 GATES FIVE 1PH CONV PARTS 1 0 EA 999 2619 001 HARDWARE LIST BASIC GATES 1 0 EA T GATES FIVE FINAL PARTS 992 8149 003 Harris PN Description QTY UM Reference Designators P 300 1981 000 SC...

Страница 54: ...07 026 STDOFF 6 32X1 2 1 4 DIA 1 0 EA 817 0914 260 INSULATOR 1 4 20 X 1 7 L 2 0 EA 817 0914 350 STANDOFF PA GROUND 1 0 EA 822 0981 009 MULTIMETER SW PLT 1 0 EA 829 8305 623 RETAINER CABLE 1 0 EA 839 7...

Страница 55: ...A03C40 A03C45 A04C10 A04C15 A04C20 A04C25 A04C30 A04C35 A04C40 A04C45 FREQ DET 504 0258 000 CAP 1000PF 20KV 5 293 0 0 EA A21C03 FREQ DET 504 0353 000 CAP 3000PF 12KV 5 293 0 0 EA A21C02 A21C03 A21C04...

Страница 56: ...5 COIL FIXED 45FC 2046 0 0 EA A21L1 943 3777 014 COIL FIXED 13 TURN 0 0 EA A21L1 988 2314 005 DP GATES FIVE 3PH 1 0 EA 989 0088 001 PKG LIST GATES FIVE VERT 0 0 EA 989 0088 002 PKG LIST GATES FIVE HOR...

Страница 57: ...17 0914 350 STANDOFF PA GROUND 1 0 EA 822 0981 009 MULTIMETER SW PLT 1 0 EA 829 8305 026 ANGLE DIODE 1 0 EA 829 8305 623 RETAINER CABLE 1 0 EA 839 7920 103 ASSY INSTR MOD COIL 0 0 EA 917 0914 223 XFMR...

Страница 58: ...6 0358 000 PILOT LIGHT AMBER 2 0 EA A19DS1 A19DS2 424 0410 000 GROMMET 1 38 MTG DIA 4 0 EA 430 0039 000 FAN TARZAN 230VAC 50 60HZ 2 0 EA A20B1 A20B2 448 0224 000 HANDLE ALUM 2 0 EA 448 0785 000 AIR FI...

Страница 59: ...EX 1 0 EA 813 5001 076 STDOFF 10 32X3 3 8 HEX 4 0 EA 813 5001 117 STDOFF 10 32X3 1 4 3 8 HE 6 0 EA 813 5013 068 STDOFF 1 4 20X1 1 RD 1 0 EA 813 5604 008 STUD BRS 6 32 X 13 16 5 0 EA 813 5606 007 STUD...

Страница 60: ...0 EA TB002 TB003 917 2244 001 SPACER 1 0 LG 75 DIA 4 0 EA 917 2332 049 INSULATOR 3 8 D X 1 LG 7 0 EA 922 0981 005 DOUBLER PLATE 1 0 EA 922 0981 008 DOUBLER PLATE 1 0 EA 922 0981 024 HINGE 1 0 EA 922...

Страница 61: ...6 17 AIRFLOW SENSOR 992 9146 001 Harris PN Description QTY UM Reference Designators J 358 1929 000 JUMPER 1 2 LG 1 8H 1 0 EA CR001 358 2997 000 END PLATE 236 TERM MODULE 1 0 EA TB001 380 0125 000 XSTR...

Страница 62: ...843 5400 041 SCH AIRFLOW SENSOR 0 0 EA 843 5400 043 PWB AIRFLOW SENSOR 1 0 EA 843 5400 259 COMPONENT LOCATOR AIR FLOW 0 0 EA 922 1265 003 CABLE A20A1 INTERCONNECT 1 0 EA 999 2834 001 HARDWARE LIST AI...

Страница 63: ...1 Symptom No Output Possible causes A 3 1 1 Open Fuse Loss of 20V Check the dc voltage on each side of F1 20 volts should be present anytime AC power is supplied to the transmitter and the low voltag...

Страница 64: ...386 0298 000 ZENER 1N5352B 15V ESD 1 0 EA CR001 386 0419 000 ZENER LM236H 2 5V ESD 1 0 EA CR010 398 0019 000 FUSE FAST CART 2A 250V 1 0 EA 402 0129 000 CLIP 1 4 DIA FUSE 2 0 EA XF001A XF001B 404 0267...

Страница 65: ...M 1 2W 1 1 0 EA R026 548 2400 266 RES 475 OHM 1 2W 1 1 0 EA R017 548 2400 289 RES 825 OHM 1 2W 1 1 0 EA R010 548 2400 301 RES 1K OHM 1 2W 1 2 0 EA R005 R012 548 2400 326 RES 1 82K OHM 1 2W 1 1 0 EA R0...

Страница 66: ...witch S1 Selects Y1 or Y2 crystal 4 20V FUSE A16F1 Protects 20 volt supply from faults within the oscillator 5 Frequency Sample A16J4 Output for optional Frequency Monitor Table A 1 Oscillator Board A...

Страница 67: ...fault Refer to the troubleshooting information in Section A covering the RF Oscillator If only one side of the IPA is producing output refer to the ohmmeter test proce dure B 3 0 1 IPA Tuning Adjust A...

Страница 68: ...10k scale works quite well The following test applies to all MOS FET s used in the transmitter but is not necessarily applicable to MOSFET s used in other equipment This test will show how a MOSFET ca...

Страница 69: ...Table B 1 IPA Board A5 IPA Power Splitter Board A26A1 Controls Indicators Rev AE 03 05 2002 888 2314 001 B 3 WARNING Disconnect primary power prior to servicing...

Страница 70: ...LATOR PAD FOR TO 247 4 0 EA Q011 Q012 Q013 Q014 448 1157 000 PANEL FASTENER FOR PCB 4 40 2 0 EA 494 0345 000 CHOKE RF 1 2 UH 2 0 EA L011 L012 508 0538 000 CAP 15 UF 400WVDC 5 2 0 EA C012 C014 516 0081...

Страница 71: ...o A1 A1 is connected to the output network Thus the power from each bridge amplifier is summed such that at the end of the power combiner string the transmitter s output power is achieved C 3 Replacin...

Страница 72: ...ighten the transistor mounting screw first to no more than 5 inch pounds Tighten the terminal block screws only after the mounting screw has been tightened C 7 Scoping the RF Drive Measuring the RF dr...

Страница 73: ...A Current Limiting Fuses These fuses protect other circuitry in the transmitter should a portion of a PA module fail As a result of the fusing scheme used in the transmitter sections of a power amplif...

Страница 74: ...ng components such as L14 C10 R11 L13 and R13 are properly soldered and are in good physical condition If any of these components have recently been installed recheck their values To determine if the...

Страница 75: ...CAP 15 UF 400WVDC 5 8 0 EA C012 C014 C022 C024 C032 C034 C042 C044 508 0554 000 CAP 3300PF 600WVDC 8 0 EA C018 C019 C028 C029 C038 C039 C048 C049 516 0081 000 CAP DISC 01UF 1KV 20 8 0 EA C011 C013 C02...

Страница 76: ...C 6 888 2314 001 Rev AE 03 05 2002 WARNING Disconnect primary power prior to servicing...

Страница 77: ...to cold tune the Output Net work Tuning the Output Network should not be attempted in the presence of an RF field on or near the frequency of the trans mitter For example the procedure for set up can...

Страница 78: ...rds the ground end of L2 will result in heavier loading of the PA D 2 2 5 L1 Tap L1 sets the reactive component that the PA modules should operate into The PA nor mally sees a negative reactance with...

Страница 79: ...description of Output Network tuning in Section D With the Tuning of the Output Network having been verified as good disconnect plug P1 from the Output Monitor and con nect an RF generator tuned to t...

Страница 80: ...Figure E 1 Output Monitor Board E 2 888 2314 001 Rev AE 03 05 2002 WARNING Disconnect primary power prior to servicing...

Страница 81: ...20 X7R 5 0 EA C001 C002 C003 C004 C005 516 0891 000 CAP 0 100UF 10 50V 1 0 EA C012 540 1600 115 RES 39 OHM 3W 5 2 0 EA R017 R018 540 1600 201 RES 100 OHM 3W 5 8 0 EA R012 R013 R021 R022 R025 R026 R02...

Страница 82: ...E 4 888 2314 001 Rev AE 03 05 2002 WARNING Disconnect primary power prior to servicing...

Страница 83: ...capacitance of the coaxial cables from the PDM Generator to the PDM Amplifiers The 15 volt power supply starts with an RFI filter L1 and C85 This filterrejects any RF energy that would be coupled in v...

Страница 84: ...f U1 F 3 2 2 Triangle Wave Imbalance An imbalance in the triangle waves driving the output comparators will result in the out puts of U9 differing from those of U10 If the DC AUDIO balance is correct...

Страница 85: ...he Mul timeter If it is excessively high such as pinned the problem would be on the Con troller in the power level summing circuitry U19 If the PDM Level is okay the problem could be caused by U1 U2 U...

Страница 86: ...0 2 0 EA L004 L005 494 0445 000 CHOKE HIGH CURRENT 470UH 2 0 EA L001 L002 500 0759 000 CAP MICA 100PF 500V 5 4 0 EA C005 C010 C013 C015 500 0787 000 CAP MICA 200PF 500V 5 4 0 EA C006 C014 C016 C020 50...

Страница 87: ...R108 548 2400 430 RES 20K OHM 1 2W 1 1 0 EA R109 548 2400 458 RES 39 2K OHM 1 2W 1 2 0 EA R105 R110 548 2400 601 RES 1MEG OHM 1 2W 1 5 0 EA R009 R010 R042 R059 R113 550 0949 000 TRIMPOT 100K OHM 1 2W...

Страница 88: ...F 6 888 2314 001 Rev AE 03 05 2002 WARNING Disconnect primary power prior to servicing...

Страница 89: ...rcuited on the output side of A6A1F1 there will be 0 voltage sent to the Controller through this circuit on J1 pin 7 If PDM Amplifier MOS FET Q19 or Q20 or the associated damper diode is short circuit...

Страница 90: ...ter check the drain circuit Remove the PDM pull up board fuses from A6 thru A9 Check the resistance from E8 E9 E10 and E11 of each board to ground Each should measure greater than 700k ohms A low read...

Страница 91: ...rent surges on PDM Amp Board A7 F1 A8F1 A8 located at front of transmitter Protects 20 volt supply from over current surges on PDM Amp Board A8 F1 A9F1 A9 located at front of transmitter Protects 20 v...

Страница 92: ...ers are immune to this damage The MOSFET transistors are shipped in antistatic packaging The transistors should remain in this packaging until they are to be used or tested G 4 Testing MOSFET s The MO...

Страница 93: ...ULATOR PAD FOR TO 247 1 0 EA CR001 494 0395 000 CHOKE 40UH 2 AMP 1 0 EA L001 506 0246 000 CAP 0 47UF 63V 5 1 0 EA C002 516 0032 000 CAP DISC 200 PF 1KV 12 0 EA C023 C024 C043 C044 C046 C047 C048 C049...

Страница 94: ...EA 939 7532 001 ASSY PWB PDM PULL UP 1 0 EA 999 2135 001 HARDWARE LIST 1 0 EA PDM PULL UP BOARD 992 5872 006 HARRIS P N DESCRIPTION QTY UM REF SYMBOLS EXPLANATIONS 384 0686 000 DIODE DSR 3400X ESD 2 0...

Страница 95: ...A BRASS 12 0 EA J011 J012 J013 J021 J022 J023 J031 J032 J033 J041 J042 J043 817 0914 267 STANDOFF 75X1 INSULATED 8 0 EA L011 L012 L021 L022 L031 L032 L041 L042 817 0914 268 STUD 5 16 18 PHENONIC 8 0 E...

Страница 96: ...H 2 888 2314 001 Rev AA 8 18 1999 WARNING Disconnect primary power prior to servicing...

Страница 97: ...volts is sent to the Interface board where it is used to drive the circuit which will energize the start contactor At the same time as the start signal is given a PDM kill is applied by a circuit form...

Страница 98: ...olation is to reduce the drain on the battery in conditions where the regulated supply is not present The 9 volt battery holds the memory status for the power level settings fine power ad justment and...

Страница 99: ...the LOW power control all the way to zero power output Use a clip lead to short across R18 on the Output Monitor board This will cause the VSWR detector to not be nulled when you bring up RF power Gr...

Страница 100: ...flop U24 74C74 Underdrive VSWR Ovld flip flop U25 74C74 PDM Kill Timer Auto Cutback flip flop U26 MC14541 PDM Kill Timer U27 74C175 Overload Counter U28 MC14541 Overload Counter Reset Timer U29 LM339...

Страница 101: ...3 CR004 CR006 CR007 CR008 CR011 CR014 CR015 CR016 CR017 CR019 CR018 CR020 CR021 CR022 CR023 CR024 CR025 CR026 CR028 CR029 CR030 CR031 CR032 CR033 CR034 CR040 CR041 CR044 CR045 CR048 CR049 CR050 CR052...

Страница 102: ...108 R109 R111 R112 R118 R119 R122 R125 R126 R127 R131 R133 R137 R138 R146 R147 548 2400 405 RES 11K OHM 1 2W 1 1 0 EA R008 548 2400 430 RES 20K OHM 1 2W 1 4 0 EA R034 R080 R083 R084 548 2400 442 RES 2...

Страница 103: ...a small DC relay or other indicating device K 2 Replacement Alignment There are no adjustments to be made to the Interface board However the board must either have provisions for the standby oscil la...

Страница 104: ...K 2 888 2314 001 Rev AE 03 05 2002 WARNING Disconnect primary power prior to servicing...

Страница 105: ...Figure K 1 Interface Board Rev AE 03 05 2002 888 2314 001 K 3 WARNING Disconnect primary power prior to servicing...

Страница 106: ...00V 1 0 EA C013 516 0453 000 CAP 1UF 100V 20 X7R 12 0 EA C001 C002 C003 C004 C005 C006 C007 C008 C009 C010 C011 C028 522 0391 000 CAP 1000UF 16V 20 1 0 EA C018 540 1357 000 RES NETWORK 1000 OHM 2 1 0...

Страница 107: ...n eral maintenance and troubleshooting ofthe GATES Series transmitters 1 An oscilloscope with 15 MHz or higher bandwidth 2 A VOM with an ohmmeter battery voltage between 3 and 18V 3 A low distortion s...

Страница 108: ...L 2 888 2314 001 WARNING Disconnect primary power prior to servicing...

Страница 109: ...that are near the work surface would have their static charge neutralized before it would cause device damage or degradation Relative humidity in the work area should be maintained as high as practic...

Страница 110: ...allow personnel to be attached to hard ground There must always be 1 megohm series resistance 1 2 watt between the person and the ground Don t touch edge connectors of loaded burn in boards or empty b...

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