Tektronix 7K11 Instruction Manual Download Page 30 | Manualshive

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ArtekMedia

Digitally signed by ArtekMedia

DN: cn=ArtekMedia, o=ArtekMedia.com, ou, [email protected], c=US

Date: 2008.11.30 22:20:36 -06'00'

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Summary of Contents for 7K11

Page 1: ...Tektronix Inc P O Box 500 Beaverton Oregon 97005 070 664 00 TEKTRONI 7K 11 CATV PREAMPLIFIER INSTRUCTION MANUAL...

Page 2: ...tails This can often be done very reasonably in consideration for adding your manual to our library Typically the scans in our manuals are done as follows 1 Typed text pages are typically scanned in b...

Page 3: ...astest possibl service Please include the instrument Type Number or Part Number and Serial Number with all requests for parts or service Specifications and price change privileges reserved Copyrtght 1...

Page 4: ...fied Characteristics 3 3 Equipment Required 3 3 Check Calibrator Frequency and Output 3 4 Check Frequency Range and Display Flatness 3 4 Check Intermodulation Distortion 3 4 SECTION 4 SERVICE INSTRUCT...

Page 5: ...Fig 1 1_ 7Kll CATV Preamplifier 7K11 COl cllm b Olltsollrce OptiotlS...

Page 6: ...the frequency range of 50 MHz to 300 MHz increasing to t2 dB with respect to 50 MHz over the full frequency range The following characteristics apply at 50 MHz in combination with the 7L12 or 7 L13 Sp...

Page 7: ...m a 75 n source This signal is used as an absolute reference for the display and is used to calibrate the 7K11 Spectrum Analyzer ensemble Harmonics of the 50 MHz pilot signal provide a picket fence of...

Page 8: ..._ 30dBmV Connect CAL OUT to RF INPUT 15 1 2 inch I I I I CENTER NORM 1 _FREE RUN RF OUTPUT to RFIN TIME DIV SPECTRUM 1M 10 ms DISPLAY MODE 10 dB DIV RFATT O dB FR EO S O V 50 MHz RESOLUTION 3MHz Fig 2...

Page 9: ...the CATV system to the 7K1 1 RF INPUT connector b Select a Frequency Span Dill so the spectrum of one channel is displayed 0 5 MHz Tune the Spectrum Analyzer Center Frequency to the center of the chan...

Page 10: ...structions so the system display amplitude and frequency span is calibrated 1 Check Frequency Range 30 MHz to 890 MHz a Apply the CAL OUT signal through the 75 n 5 1 2 inch cable to the RF INPUT and c...

Page 11: ...e graticule then open the display by decreasing the Freq Span Div to 2 MHz d Adjust the signal amplitude with the Spectrum Analyzer Variable Gain control to a graticule reference line e g one division...

Page 12: ...1 Spectrum Analyzer ensemble Oscilloscope and 7L 12 or 7L13 Spectrum Analyzer NOTE Storage or lIariable persistence oscilloscopes are desirable for spectrum analysis Tektronix 7000 Series storage Of l...

Page 13: ...by the user or manu facturer to more rigid specifications than the 7K11 RF attenuator must be used 4 Check the Frequency Range and Display Flat ness 2 dB 30 MHz to 890 MHz 1 dB 50 MHz to 300 MHz a Set...

Page 14: ...NPUT Fig 3 3 illustrates this setup b Set the front panel controls and selectors as follows Signal Generator 500 MHz 1000 MHz 7000 Series Oscilloscope 1 Display Mode RF Attenuator Reference Level Vide...

Page 15: ...of 10 dB attenuation When the amplifier is overdri ven additional spurs will be generated either side of the 1M signals If this occurs increase the 7K l1 RF ATTEN UATOR setting and decrease the Spectr...

Page 16: ...the output when the REFERENCE LEVEL selector attenuator is set to 30 dBmV A 30 dBmV signal at the RF INPUT is attenuated 30 dB through AT912 and AT914 amplified 25 dB by U900 and attenuated 6 dB throu...

Page 17: ...f time Clean the interior by loosening accumulated dust with a dry soft brush then remove the loosened dirt with low pressure air to blow the dust clear High velocitv air can damage some components Ha...

Page 18: ...d by triangles on the holder and the circuit board see Fig 4 2 All connectors are identified on the schematic and board with P numbers Resistor Color Code Brown composition resistors metal film resist...

Page 19: ...nent transistor or IC is inserted properly in the socket see Fig 4 4 e After the operational check return the good components to their original sockets to reduce calibra tion time and run in period NO...

Page 20: ...current to check the diode junction Do not check the forward to back resistance ratios of tunnel diodes or mixer diodes Service 7Kll Integrated Circuit IC Checks Integrated circuits are most easily c...

Page 21: ...ver the pin AT902 AT906 AT9tO AT914 Replacing the Square Pin for the Multi pin Connectors It is important not to damage or disturb the ferrule when removing the old stub of a broken pin The ferrule is...

Page 22: ...lifier are replaced as a unit Unsolder the input Service 7K11 output and power leads to the amplifier Use a high wattage iron approximately 75 watts to unsolder the three shield tabs and lift the asse...

Page 23: ...Section 5 7K11 OPTIONS AND MODIFICATIONS 5 1 Scans by O tso ce Options...

Page 24: ...tact you concerning any change in part number Change information if any is located at the rear of this manual SPECIAL NOTES AND SYMBOLS XOOO Part first added at this serial number OOX Part removed aft...

Page 25: ...IRC Philadelphia Div Miller J W Co Stackpole Carbon Co Tektron ix Inc Bourns Inc Dale Electronics Inc ITT Gremar Inc Kings Electronics Co Inc Sealectro Corp ADDRESS P O Box 3608 P O Box 128 1201 2nd S...

Page 26: ...CKT BOARD MTD 98291 050 651 003931 J905 131 1536 00 CONN RCPT ELEC CKT BOARD MTD 98291 050 651 003931 J910 131 0818 00 CONN RCPT ELEC BNC FEMALE 91836 KC19 153 J915 131 0375 00 CONN R ANGLE 50 OHM 917...

Page 27: ...RES FXD FILM 1K OHM 1 0 125W 75042 CEATO 1001F R956 311 0540 00 RES VAR WW 2 5K OHM 5 80294 3345P 1 252 R958 321 0193 00 RES FXD FILM 1K OHM 1 0 125W 75042 CEATO 1001F R959 321 0066 00 RES FXD FILM 4...

Page 28: ...d in hexagon 1 I h n onnoo n p n frf 11 i l lfl Ji Blue tint encloses components located on circuit board The following prefix letters are used as reference designators to identify components or assem...

Page 29: ...I03 1 0060 L05 C1I6 0 0 II co R R96S Q090 R_ R96S 9 C960 L094 L R96 C954 R93a R936 R94 R934 R932 R93 R92S UH i R926 R924 U90S Ri22 R920 i u 3 ComponenlloQlion on I Int rbc So rd A2 i o i i i Componenl...

Page 30: ...T900 AT912 C900 ___ J u _ Component 1oC8liO l on 1 Attenuator BOIItd A1A1 Scllns bpO lSollrce OptiollS ArtekMedia Digitally signed by ArtekMedia DN cn ArtekMedia o ArtekMedia com ou email manuals Arte...

Page 31: ...I I I I I I I I I I I I I L I_______ _ I I I I MOO I I I I ho 0 0 L_ _ _ _o_____ _ l_ _ _k_ ___ I I E OOUT fl D AIAl Y CAlleI lATOI I R I 1 00 I t 9 1 J 1 9 509 L9 1 J 0 1 C Z R 4 001 U J fIO JqlS 0...

Page 32: ...MI o O K 1 1 CR 942 U905 156 0053 O 0 r I V M O J l R I I 1 11 II I ill R jI e O 1 I eft 4 144 I 1 5 1 P J F 92c8 2 51 l 5 ISO o D O 1 CATV PF EAMPLIFI ER 124 24 9 K eo l I...

Page 33: ...GURE AND INDEX NUMBERS Items in this section are referenced by figure and index numbers to the illustrations INDENTATION SYSTEM This mechanical parts list is indented to indicate item relationships Fo...

Page 34: ...ELECTROLYTIC OD OUTSIDE DIAMETER TRH TRUSS HEAD ELEM ELEMENT OVH OVAL HEAD V VOLTAGE EPL ELECTRICAL PARTS LIST PH BRZ PHOSPHOR BRONZE VAR VARIABLE EQPT EQUIPMENT PL PLAIN or PLATE WI WITH EXT EXTERNAL...

Page 35: ...CONN 0 188 INCH LONG 2 SOCKET PIN CONN 0 178 INCH LONG 5 TERMINAL PIN 0 365 INCH LONG 1 CONN RECP ELEC 1 SHIELD ELEC TOP 1 SHIELD ELEC COVER ATTACHING PARTS 2 NUT PLAIN HEX 4 40 X 0 188 INCH BRS 1 2 2...

Page 36: ...3ID X 0 102 OD SCREW MACHINE 4 40 X 0 25 INCH PNH STL WASHER LOCK INT 0 12 ID XO 26 OD STL NUT PLAIN HEX 2 56 X 0 188 INCH BRS NUT PLAIN HEX 4 40 X 0 188 INCH BRS BASE SHLD ATTEN CKT BOARD ASSY READOU...

Page 37: ...ScIllU bp Ollt6ource OptJolIS...

Page 38: ...7Kll CATV PREAMPLIFIER i5 m X r o C m C Scans by Ollisollrce Oot ons...

Page 39: ...1 2 3 4 5 Name Description Code Mfr Part Number 2 065 0125 00 1 CARTON ASSEMBLY 80009 065 0125 00 CARTON ASSEMBLY INCLUDES 1 004 0241 00 2 CASE HALF 80009 004 0241 00 2 004 0242 00 1 END CAP REAR 8000...

Page 40: ...0126 00 1 012 0214 00 1 012 0074 00 1 070 1664 00 1 ACCESSORIES fl Mfr 1 2 3 4 5 Name Description Code Mfr Part Number ADAPTER CONN BNC TO TYPE F 80009 013 0126 00 CABLE INTERCONN 80009 012 0214 00 C...

Page 41: ...manuals Hence your manual may contain new change information on following pages A single change may affect several sections Sections of the manual are often printed at different times so some c f the...

Page 42: ...CTION CHANGE TO AT918 R942 R944 SECTION 7 307 1021 00 315 0512 00 315 0362 00 Schematic Diagram ATTEN THK FILM 2 5X RES FXD COMP 5 1K OHM 5 0 25W RES FXD COMP 3 6K OHM 5 0 25W CHANGE Pin 9 of U905 to...

Page 43: ...stortion CHANGE TO READ Intermodu1ation Distortion 7K11 7L12 or 7K11 7L13 SECTION 3 PERFORMANCE CHECK IM products and harmonics from two signals within the frequency span of the 7K11 are 70 dB or more...

Page 44: ...rease of the input level will cause 20 dB increase of the level of the 2nd order spurious response Page 3 6 REPLACE Step 3 with Step e as follows e Note The level of the 1M products down from the refe...

Page 45: ...done as follows 1 Typed text pages are typically scanned in black and white at 300 dpi 2 Photo pages are typically scanned in gray scale mode at 600 dpi 3 Schematic diagram pages are typically scanne...

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