Marconi TF 2950 Communications Test Set
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Model:
TF 2950
Date:
1971
Category:
Group:
Description:
Information
INTRODUCTION
The Mobile Radio Test Set, TF 2950 has been designed as a
fully transistorised, multipurpose
unit capable of being driven from its own rechargeable
batteries. The main application
is for the testing, adjustment and servicing of mobile radio
communications equipment operating
in the VHF and UHF frequency bands.
1) An AM/FM signal Generator covering the appropriate mobile
radio VHF and UHF
communications bands.
2) A modulation monitor for the measurement of amplitude
modulation depths up to 80% and
. peak frequency deviations up to +25 kHz.
3) An in-line power meter with a separate 15 W r . f . load.
4) An audio voltmeter having a sensitivity of 10 mV f. s . ,
an input impedance of 100 кй and
a bandwidth of 20 kHz.
5) An audio Oscillator with a nominal frequency of 1 kHz
which is adjustable by up to +1% and
an output level variable up to 3 V.
5) An audio Oscillator with a nominal frequency of 1 kHz
which is adjustable by up to +1% and
an output level variable up to 3 V .
Manual type:
Service and User Manual
Pages:
47
Size:
8.19 Mbytes (8591957 Bytes)
Language:
english
Revision:
Manual ID:
Date:
Quality:
Scanned document, all readable.
Upload date:
2016 06 05
MD5:
036fdfa3482c4ff5187f75d9a693ac5a
Downloads:
714
Information
Contents
GENERAL INFORMATION
Introduction
Data Summary
Accessories Supplied
Chapter 2 OPERATION
2.1 Preparation for use
2.2 Power Supplies
2.3 Signal Generator controls
2.3.1 Signal Generator operation
2.4 R .F . Power Meter controls
2.4.1 R .F . Power Meter operation
2.5 1 kHz Oscillator controls
2.5.1 1 kHz Oscillator operation
2.6 A.F. Voltmeter controls
2.6.1 A.F. Voltmeter operation
2.7 Modulation Monitor controls
2.7.1 Modulation Monitor operation
Chapter 3 TECHNICAL DESCRIPTION
3. 1 Power supplies
3.2 Voltage Stabiliser Circuit
3. 3 Audio Voltmeter
3.4 1 kHz Audio Oscillator
3.5 Modulation Monitor
3.5.1 F.M. Circuitry
3.5.2 A.M. Circuitry
3.6 Signal Generator
3.7 R .F . Power Meter
Chapter 4 & 5 MAINTENANCE AND REPAIR
will be issued when available
Fig. 5.1P.C.B. Component Layout
Fig. 5.2 Location of Preset controls
Chapter 6 REPLACEABLE PARTS
6.1 Introduction
6.2 Ordering
6.3 Parts List
Chapter 7 CIRCUIT DIAGRAMS
Fig. 7.1 Inter-unit Wiring Circuit Diagram
Fig. 7.2 Power supply, A.F. 1 kHz Oscillator,
A.F. Voltmeter Circuit Diagram
Fig. 7.3 Modulation Monitor Circuit Diagram
Fig. 7.4 VHF/UHF AM/FM Signal Generator Circuit
Diagram
Fig. 7.5 R .F . Power Meter Circuit Diagram
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