Marconi - TF 2171 - Other
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Marconi TF 2171
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Equipment:
TF 2171
Date:
1981
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Information
INTRODUCTION
Digital Synchronizer TF2171 is designed for use with Signal Generator TF2015, to which it can be fitted as shown in Fig. 1.1. Together, the
instruments provide a 10 to 520 MHz signal Generator ystem with high
discrimination tuning and very good frequency stability.
Warm-up drift is eliminated, so measurements can be commenced almost
immediately after switching on. Incremental frequency control can be
obtained digitally by adjusting the frequency switches of the synchronizer in
increments of 100 Hz up to a maximum of 0.5% of the initially set frequency
without any readjustment of the Generator The synchronizer can also be switched to provide a 1 MHz standard
frequency or to accept an external 1 MHz Frequency Standard The setting up procedure is extremely simple and calls only for the
positioning of the synchronizer frequency switches and the tuning of the
signal Generator to obtain a 'locked-on' condition.
All the features of Signal Generator TF 2015 are fully maintained including
the a.m. and f.m. facilities and the synchronizer can be switched to allow the Generator to be used independently i.e. in the unlocked mode.
1 Manual
Service and user manual
Manual type:
Service and user manual
Pages:
37
Size:
2.3 MB
Language:
english
Revision:
Manual-ID:
EB 2171
Date:
June 1981
Quality:
Scanned document, reading partly badly, partly not readable.
Upload date:
Jan. 6, 2019
MD5:
e81de0ba-3913-e69e-c927-f84a1206118f
Information
Chapter 1 GENERAL INFORMATION
1.1 Introduction ... ... ... 3
1.2 Data summary ...4
1.3 Accessories 5
Chapter 2 OPERATION
2.1 Fitting to signal Generator ______6
2.2 Connecting to signal Generator 6
2.3 AC supply cable ... ... 6
2.4 Preliminary requirements ... 6
2.5 Fuse ... ... ... ... 6
2.6 Controls and connectors ... 7
2.7 Setting frequency ... ... 7 .2.8 Incremental frequency adjustment
7
2.9 Independent use of signal Generator 8
2.10 1 MHz output ... ...8
2.11 Using an external 1 MHz source 8
2.12 Internal frequency std. adjustment 8
Chapter 3 TECHNICAL DESCRIPTION
3.1 Introduction ... ... ... 9
3.2 Mechanical characteristics ... 9
3.3 Basic principle ... ... 9
3.4 Circuit summary ...10
3.5 Input circuit ... ...11
3.6 Variable ratio dividers ... 12
3.7 Standard reference Oscillator X02 12
3.8 Fixed frequency dividers ... 12
3.9 Ramp Generator 13
3.10 Sample and hold phase detectors 13
3.11 Sample and hold driver circuits 13
3.12 Voltage tuned crystal Oscillator 14
3.13 Out-of-lock indicator circuit ... 14
3.14 Interface Amplifier 15
3.15 Power unit ... ... ... 15
Chapter 4 MAINTENANCE
4.1 Introduction ... ... ... 16
4.2 Screw fasteners ...16
4.3 Access to sub-assemblies and components ...16
4.4 Preliminary checks ... ... 17
4.5 Test equipment ... ... 17
4.6 Overall performance check ... 19
4.7 Circuit checks and adjustments 19
4.7.1 Power supplies (A4) ... 19
4.7.2 Input Amplifier (Al) ... 19
4.7.3 Prescaler unit (Al) ... 19
4.7.4 Variable ratio dividers (Al) 20
4.7.5 5 MHz Oscillator and divider
FD2 (A2) ...20
4.7.6 Ramp Generator RG2 (A2) 20
4.7.7 Sample and hold driver circuit
DR2 (A2) ...20
4.7.8 Voltage tuned crystal Oscillator and divider FD1 (A2) ... 20
4.7.9 Ramp Generator RG1 (A2) 20
4.7.10 Sample and hold driver circuit
DR1 (A2) ...20
4.7.11 Lock indicator circuits (A3) 22
4.7.12 Interface Amplifier (A3) 22
4.8 Cleaning rotary switches ... 22
4.9 Additional information ... 22
Chapter S Not assigned
Chapter 6 REPLACEABLE PARTS
Introduction and ordering ... 23
Index to units ...31
Chapter 7 CIRCUIT DIAGRAMS
Circuit notes ... ... ... 32
Fig.
7.1 Input Amplifier prescaler and Interface 33
7.2 Variable ratio dividers ... 35
7.3 Standard and fixed dividers and phase detector ... ... ... 37
7.4 Power supplies ... ... 39
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