Equipment information:

Simpson 340 Generator
Manufacturer:
Simpson
Model: 340
Date:
Category: Measurement instruments
Group: Generator
Description: SIGNAL GENERATOR
Information:
                                    A signal generator is one of the radio serviceman's basic
test instruments. In the Simpson 340 Signal Generator we
have provided at a moderate price an instrument of highest
accuracy, greatest stability, minimum leakage and good wave
form. It gives a test signal source that will maintain its
accuracy under constant use. It enables you to
"troubleshoot" fast and accurately every time. The big
nine-inch meter type dial, with hair-line pointer, gives
high readability. Smooth vernier control permits close settings.
Your pride in your Model 340 will grow as you learn of its
many hidden virtues—the unusual quality of materials from
which it is made, the advanced electronic engineering it
embodies. Take the shielding as an example. The coils, the
attenuator and the signal selector are individually
shielded. Oscillator and modulator assemblies are sealed in
a rigidly welded, entirely enclosed chassis. An effective
line filter is used. Even the line cord is shielded. The
result is to cut leakage to a minimum. These are but a few
of the refinements of Model 340.

1. The Model 340 Signal Generator is designed to give the
service dealer a practical, easy to use, test signal source
that will maintain its accuracy in every-day use. Its big
9-inch meter type dial with .its long scale makes accurate
settings an easy matter. The entire instrument, with its
beautifully finished panel, gives a professional appearance
that is an asset to any shop.
The instrument is supplied with a shielded output lead and
operator's manual. The standard model is for use on 115
volt, 50 or 60 cycle current supply.
2. FREQUENCY BANDS AVAILABLE
75-200 kilocycles 200-600 kilocycles 600-1700 kilocycles
1.5-4.5 megacycles
4.5-12 megacycles 10-30 megacycles 40-120 megacycles
400 cycle 30% modulation of above radio frequency bands 400
cycle audio frequency signal
3. CIRCUIT
The electron coupled circuit assures extreme stability.
Three tubes are used in the circuit, one 6X5GT as a full
wave rectifier, one 6I5GT as a 400 cycle audio oscillator
and modulator and one 6K6GT as the electron coupled RF
oscillator.
4. OUTPUT
The signal is controlled through a step attenuator of the
ladder type, each step being regulated by a smooth
non-inductive control. The RF output can be varied from a
few microvolts to approximately .15 volts while the 400
cycle audio signal can be varied from 0 to about 3.5 volts.

These manuals are available for the above equipment:

Simpson -- 340 -- Service and User Manual
File name: Simpson-6443-Manual-Page-1-Picture
Manual Type: Service and User Manual
Pages: 43
Size: 10.18 Mbytes (10677793 Bytes)
Language: english
Revision:
Manual-ID/Number:
Date:
Quality: Scanned document, all readable.
Upload date:
MD5: 279e930628efc1c75374f26599e8d73d
ed2kID: df69a78fa20671636c7c96e14797eba0
Downloads: 68 since 23 November 2014
Information:
GENERAL DESCRIPTION PAR.
General Introduction
.............................................................1
Frequency Bands
....................................................................2
Circuit
............................................................................................3
Output
.........................................................................................4
Shielding
.....................................................................................5
Calibration
..................................................................................6
OPERATING INSTRUCTIONS
Operation of
Controls............................................................1
Signal Switch
.......................................................................la
Range Selector
Switch.....................................................lb
Multiplier Switch
...............................................................lc
Output Control
....................................................................Id
Receiver Alignment
...............................................................2
Dummy
Antenna..................................................................2a
Output Meter
........................................................................2b
Alignment of TRF
Receivers........................................2c
Alignment of Superheterodyne Receivers..............2d
IF Alignment
...................................................................2d
1
Alignment of Broadcast Band...:.............................2d 2
Alignment of Automatic Frequency Control 2d 3
Alignment of Short Wave Bands...........................2d 4
Image Frequencies
.....................................................2d 5
Alignment of FM
Receivers........................................3
Signal Tracing
Methods........................................................4
Output
Stage.........................................................................4a
First Audio
Stage.................................................................4b
Diode Detector and
IF........................................................4c
First
Detector........................................................................4d
Oscillator
................................................................................4e
RF
Stage..................................................................................4f
Antenna
Coil.........................................................................4g
Measurement of Stage
Gain..............................................5
General Information
.......................................................5a
Necessary
Equipment.......................................................5b
Output
Stage.........................................................................5c
First Audio
Stage..................................................................5d
Diode Detector and
IF.......................................................5e
First
Detector........................................................................5f
Oscillator
...............................................................................5g
RF
Stage.................................................................................5h
Antenna
Coil........................................................................5i
FUNCTIONING OF PARTS
Radio Frequency
Oscillator...............................................1
Audio Frequency
Oscillator.............................................2
Output
Attenuator...................................................................3
Signal Selector
Switch.........................................................4
Range Selector
Switch.........................................................5
Power Supply
..........................................................................6
MAINTENANCE PAR. PAGE
Replacement of
Tubes............................................................1
36
Calibration
.................................................................................2
36
Equipment Required
........................................................2a 36
Calibration Procedure
...................................................2b 36
Replacement of
Parts............................................................3
39
Model 340 Parts
List.............................................................4
Simpson-6443-Manual-Page-1-Picture
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