Equipment information:

Marconi TF 2015 Generator
Manufacturer:
Marconi
Model: TF 2015
Date: 1973
Category: Measurement instruments
Group: Generator
Description: 10MHZ - 520MHz AM/FM Signal generator
Information:
                                    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.

These manuals are available for the above equipment:

Marconi -- TF 2015 -- Service Manual
File name: Marconi-7876-Manual-Page-1-Picture
Manual Type: Service Manual
Pages: 57
Size: 2.00 Mbytes (2102385 Bytes)
Language: english
Revision: 2
Manual-ID/Number: H 5Д8 1 I -(VIOL
Date: May 1978
Quality: Scanned document, reading partly badly, partly not readable.
Upload date:
MD5: 5f26c408bff7e9b9c6a12dbb6cb5be87
ed2kID: f33ad99b21ddcc4a3a32d3f2c32c572d
Downloads: 27 since 05 June 2016
Information:
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
13
13
13
13
13
14
14
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
28
2 Я
28
29
29
29
30
30
30
30
30
31
31
31
32
32
33
33
33
33
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
Start Free Download


Comments

No comments yet.

Add Comment

* Required information
(never displayed)
 
Bold Italic Underline Strike Superscript Subscript Quote Line Bullet Link Email Image Video
 
Smile Sad Huh Laugh Mad Tongue Crying Grin Wink Scared Cool Sleep Blush Unsure Shocked
 
1000
Enter the word shark backwards.
 
Enter answer:
 
Notify me of new comments via email.
 
Remember my form inputs on this computer.
 
 
Powered by Commentics