Geräte Informationen:

Marconi TF 2015 Generator
Hersteller:
Marconi
Modell: TF 2015
Datum: 1973
Kategorie: Messgeräte
Gruppe: Generator
Beschreibung: 10MHZ - 520MHz AM/FM Signal generator
Informationen:
                                    TF 2015 is a general purpose a.m./ f.m.
signal generator covering the frequency range
10 MHz to 520 MHz in eleven switched bands.
Fundamental frequency generation is by voltage
tuned oscillators which, in conjunction with the
panel mounted controls, enable easy tuning to
narrow band communication receivers up to the
highest carrier frequencies.

Folgende Anleitungen sind für obiges Gerät verfügbar:

Marconi -- TF 2015 -- Serviceanleitung
Dateiname: Marconi-7876-Manual-Page-1-Picture
Dokumenttyp: Serviceanleitung
Seitenanzahl: 57
Dateigröße: 2.00 Mbytes (2102385 Bytes)
Sprache: Englisch
Revision: 2
Dokument-ID/Nummer: H 5Д8 1 I -(VIOL
Datum: Mai 1978
Qualität: Gescanntes Dokument, teilweise schwer oder teilweise nicht zu lesen.
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Downloads: 26 seit 05 Juni 2016
Informationen:
Chapter 1 G EN ER A L IN FO RM A T IO N
1 . 1 Introduction . . . , . ,
1. 2 Data summary
1 .3 Versions and a c c e sso r ie s
Chapter 2 O P ERA T IO N
2.1 P relim in a ry requirements
2.2 ^ AC supply cable __________
2.3 “ Battery operation
2.4 Fuses . . . . . .
2.5 Controls and connectors
2.6 Setting frequency ________
2.7 СW output . . . . . .
2.8 Internal amplitude modulation
2.9 Internal frequency modulation
2.10 External a.m. or f .m . . . .
2.11 Internal a .m . with external f.m.
2.12 Internal f .m. with external a .m .
2.13 Internal modulation output
2.14 Operation with digital S3rnchronizer
2.15 Sweep facility . . . . . .
2.16 Attenuator calibration . . .
2.17 Matching to high impedance loads
2.18 Use of i . f . probes . . . . . .
2.19 Quieting sensitivity measurements
2.20 Correct use of the -H3cLB output facility
Decibel conversion tables . . .
10
10
10
10
10
12
13
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14
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14
14
14
15
16
15
16 & 17'
chapter 3 T EC H N IC A L DESCRIPTION
3.1 Mechanical characteristics .................. . . . ___
........................... 19
3.2 Overall function . . . . . . . . . . . . . . .
........................... 19
3.3 Circuit functions ............................... . . .
. . . ........................... 20
3.4 R F oscillators
....................................................................
........................... 20
3.5 Tuning and frequency modulation . . . . . . . . .
........................... 20
3.6 F ir s t a . i . c . loop . . . . . . . . . . . . . . .
........................... 20
3.7 Pre-amplifier . . . . . . . . . . . . . . .
........................... 20
3.8 Modulator and amplitude modulation . . . . . .
........................... 21
3.9 Counter amplifier . . . . . . . . . . . . . . .
........................... 21
3.10 AM driver and d .c . offset circuits . . . . . .
........................... 21
3.11 Wide band amplifier . . . . . . . . . . . .
................. 21
3.12 Second a . I .e . circuit . . . . . . — —
........................... 21
3.13 Fine r . f. output control . . . . . . . . . . . .
........................... 21
3.14 Modulation oscillator . . . . . . . . . . . .
........................... 22
3.15 Predistortion circuit . . . . . . . . . . . .
........................... 22
3.16 +6 dB output . . . . . . . . . . . . . . .
........................... 22
3.17 Monitor circuits . . . . . . . . . . . . . . .
........................... 23
3.18 Coarse r . f . output control . . . . . . . . . . . .
.................. 23
3.19 Power unit . . . . . . . . . . . . . . . . . .
.................. 23
3.20 Supply filters . . . . . . . . . . . . . . .
........................... 23
Chapter 4 M A IN T EN A N C E
4.1 Introduction __ ___
4 . 2 Sc r ew f a s t e n e r s . . . . . . . . .
4 . 3 Access to sub-nssomblies and components
4.4 P relimin a ry checks ...............................
4.5 Test equipment . . . . . . . . .
4.6 Performance chccks . . . . . .
4. 6.1 Power supply Unit A20
4.6.2 Frequency calibration Unit Δ12 (sub-assemblies A l
4.G.3 R F output (normal)
4.6.4 R F output (+6 dB) . . .
4.6.5 Checking v . s .w . r . (frequencies 350 to 500 MHz)
4.6.6 Checking v . s .w . r . (frequencies 10 to 350 MHz)
4.6.7 Modulation oscillator performance
4.6.8 Checking f .m . deviation
4.6.9 Checking a .m . depth
4.6.10 Checking f .m . tracking
4 . 6 . 1 1 Checking a . I . e . s y s t em
4.6.12 Counter output level
4.6.13 External modulation sensitivity
4.6.14 AM distortion . . .
4.0.15 FM distortion . . .
4.6.16 üpurious f .m . on c .w .
4.6.17 Spurious a ,m . on c .w .
4.6.18 Spurious a .m , on f .m .
4.6.19 Spurious f .m . on a .m .
4.6.20 C a r r ie r harmonics
4.6.21 Coarse r . f . output control
4.6.22 Fine r . f . output control
4.7 Cleaning rotary switches . . .
to A l l )
24
2 1
21
24
2 1
27
27
23
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2 Я
28
29
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29
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33
Chapter 5 REPAIR
5.1 Introduction . . . __ __ ___
5.2 Fault location . . . . . . . . .
5. 3 Replacing tuning drive cord . . .
5.4 Replacing transformers A16, T I , T2
5.5 Additional information . . .
34
34
39
40
40
Chapter 6 REPLA CEA BL E PARTS
Introduction and ordering
Index to units
41
54
Chapter 7 C IRC U IT DIAGRAMS
Circuit notes . . . . . .
F ig . 7.1 R F o s c i l l a t o r s . . . . . .
7.2 Wide band amplifiers - modulator - a
7.3 Tuning - modulation - monitor circuits
7.4 Power unit and coarse attenuator
.c . circuits
Marconi-7876-Manual-Page-1-Picture
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