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Micro Movements Ltd Lightbeam Oscillograph M12-150A Micro Movements Ltd
The Centre, Reading Road,
Eversley, Hampshire, RG27 0NB
Tel: +44 (0)1189 730200, Fax: +44 (0)1189 328872
www.micromovements.co.uk
M12-150A Lightbeam Oscillograph
Micro Movements Ltd
Lightbeam Oscillograph
M12-150A Micro Movements Ltd
The Centre, Reading Road,
Eversley, Hampshire, RG27 0NB
Tel: +44 (0)1189 730200, Fax: +44 (0)1189 328872
www.micromovements.co.uk
M12-150A Lightbeam Oscillograph
M12-150A Instruction Manual
List of Contents.
Section 1 Specification
Reference
Recorder
1.1
Recorder Options
1.2
Galvanometers
1.3
Section 2 General Information (Recorder Mainframe)
Principle of Operation
2.1
Introduction to the M12-150A
2.2
Recording Facilities
2.3
Trace (or Channel) identification
2.4
Event Marker
2.5
Timing Lines
2.6
Grid Lines
2.7
Chart Speeds
2.8
Auto Recording Facility
2.9
Lamp
2.10
Trace Intensity
2.11
Galvanometer Block
2.12
Galvanometers
2.13
Remote Control Facilities
2.14
Connectors
2.15
Signal Conditioning
2.16
Circuit Protection
2.17
Summary of Controls
2.18
Alphanumeric Printer
2.19
M2030 Computer Interface
2.20
Section 3 Installation and Operation
Introduction
3.1
Equipment List
3.2
Precautions
3.3
Preparing the Recorder for use
3.4
Paper Loading
3.5
Making a recording
3.6
Switch-off and Storage
3.7
Recording Papers
3.8
Section 4 Operational Maintenance
Lubrication
4.1
Optical Cleaning
4.2
Magnet Block
4.3
Removal of recorder from case
4.4
Removal of control module
4.5
Lamp removal and renewal
4.6 Micro Movements Ltd
The Centre, Reading Road,
Eversley, Hampshire, RG27 0NB
Tel: +44 (0)1189 730200, Fax: +44 (0)1189 328872
www.micromovements.co.uk
M12-150A Lightbeam Oscillograph
Section 5 Signal Conditioning
Introduction
5.1
M1020 Designers Module
5.2
M1036 Transient Capture Module
5.3
M1049 Carrier Oscillator/Amplifier/Demodulator
5.4
M1055 Passive Conditioner
5.5
M1060 Strain Gauge Amplifier
5.6
M1061 Thermocouple Amplifier
5.7
M1070 Attenuator/Amplifier
5.8
M1071 Variable Attenuator
5.9
M1073 R.M.S./D.C. Converter
5.10
M1080 Frequency/D.C. Converter
5.11
M1085 Frequency Calibrator
5.12
M1088, M1088-P Channel Completion Card
5.13
General Notes, Voltage Output and Calibration
5.14
Section 6 Circuit Diagrams
C2382
Wiring schedule
C2170
Power Supply Circuit Diagram
B2217
Control Board Circuit Diagram
B2248
Siganal Conditioning Circuit Diagram
B2229
Display Board Circuit Diagram
B2231
Cal/Ch Display Board Circuit Diagram
B2151
Flash Tube Board Circuit Diagram
A1192
Heater Board Circuit Diagram
B1193
12/24V Inverter Circuit Diagram
B0227/1
M1000 Signal Conditioner Input
B0227/2
M1000 Signal Conditioner Input Micro Movements Ltd
The Centre, Reading Road,
Eversley, Hampshire, RG27 0NB
Tel: +44 (0)1189 730200, Fax: +44 (0)1189 328872
www.micromovements.co.uk
M12-150A Lightbeam Oscillograph
Section 1 Specifications
1.1
Recorder M12-150A
Magnet Block
:
500V D.C. insulation, 12-channel, non-
tilting
Flux Density
:
10K gauss +/- 1%
Magnet Block Heater
:
Electronically Controlled, 45
o
C +/- 2
o
C
Galvanometer
:
Micro Movements miniature type H
Optical Arm
:
150mm
Paper Drive Speed
:
1 -10mm/sec. in 10 steps
x1, x10, and x10 multiplier
Paper Drive Accuracy
:
+/- 5% (Typical : +/- 3%)
Paper Drive Acceleration
:
300ms max.
Recording Paper
:
Direct Print 6 (152mm) width
Emulsion In only.
Length -
30 metres (Lightweight)
52.5 metres (Ultrathin)
Preferred types - Kodak 1895 or 2022
Agfa Gevaert Oscilloscript D or E
Writing Speed
:
30,000 cm/sec.
Timing
:
Full width lines from Xenon flash tube.
Timing Speed
:
0.01, 0.1, 1.0, 10.0 seconds
Timing Accuracy
:
0.1% (crystal controlled)
Light Source
:
6 volts 10 watt Quartz Halogen Lamp
Trace Intensity Control
:
By front panel thumbwheel
Event Marker
:
Manually initiated on print galvanometer by
front panel push button or remote
operation by contact closure.
Gridlines
:
Spaced at 2mm, every 5th line (1cm)
accentuated
Trace Identidication
:
Sequential trace marking with edge num
bering
Remote Control
:
Recorder On/Off with indicator Event
Marker
Auto Paper Length
:
0.2 to 2 metres and continuous
Signal Input
:
7 pin locking DIN connector for each
channel
Power Requirements
:
115 or 230 volts 45-440 Hz by voltage
selector on rear panel
Power Consumption
:
75VA
Operating Temperature
:
External ambient 10
o
C - 40
o
C
Storage Temperature
:
-20
o
C to +70
o
C
Dimensions
:
Width - 260mm (9ins)
Height - 176mm (7ins)
Depth - 325mm (12.5ins)
Excluding feet and free connectors.
Weight
:
10Kg (22Ib) Micro Movements Ltd
The Centre, Reading Road,
Eversley, Hampshire, RG27 0NB
Tel: +44 (0)1189 730200, Fax: +44 (0)1189 328872
www.micromovements.co.uk
M12-150A Lightbeam Oscillograph
Section 1 Specifications contd.
1.2
Factory Fitted Optional Extras
a)
A6 Battery operation via integral inverter, 12 and 24 V D.C.
b)
A4/A5 Remote programming of chart speeds and/or continuously variable
speed drive.
c)
A7 Speed reduction module (
÷60).
Gives additional chart speed in units of mm
per minute.
d)
M2030 Integral Computer Interface.
1.3
Galvanometers
a)
Type: Moving coil (Micro Movements type H)
b)
Linearity: +/- 1% over 5cm from centre position.
c)
Balance: dependent on sensitivity (see Galvanometer Selection Table).
d)
Damping: Electro magnetic and/or silicon fluid (dependent on type).
e)
Focal length of galvanometer lens : 18cm.
f)
Deflection sensitivity.
The sensitivities are tabulated as follows with :-
i)
Optical path length of 150mm
ii)
Sensitivity and resistance tolerance +/- 10%
(not including magnet block tolerance.)
iii)
No external damping resistance.
g)
Dimensions:
i)
Length 68.2mm (2.687 ins)
ii)
top diameter 3.3mm (0.130ins)
iii)
bottom diameter 2.4mm (0.0945ins)
General
The recommended galvanometer for the M12-150A recorder is the M1600H.
High Frequencies
For higher frequency applications two other galvanometer are available, M2500H,
M3300H
When using these galvanometers, two points should be noted:
1)
The Trace Identification is achieved by injecting a small pulse of current into
the galvanometer. The deflection on the M2500H and the M3300H is reduced
relative to the M600H by 4:1 and 8:1 respectively, therefore becoming indistin
guishable. This Trace Indentification current can be increased for special appli
cations requiring high frequency galvanometers. Consult Factory if this is
required.
2)
The maximum current available from the range of signal conditioning amplifi
ers is +/- 12mA. Thus the maximum deflection that can be obtained for the
three
galvanometers is:-
M1600H
+/- 15cm (F.SS.D.)
M2500H
+/- 3cm
M3300H
+/- 1.5cm
An optional high current output stage is available with each amplifier which in
creases the maximum current to +/- 50mA. Micro Movements Ltd
The Centre, Reading Road,
Eversley, Hampshire, RG27 0NB
Tel: +44 (0)1189 730200, Fax: +44 (0)1189 328872
www.micromovements.co.uk
M12-150A Lightbeam Oscillograph
Section 1 Specifications
contd.
The corresponding maximum deflection would be:
M2500H
+/- 12cm
M3300H
+/- 6cm
Low Frequencies
It is recommended that galvanometers with lower frequency response than the M1600H
are not used in the M12-150A as they do not satisfactorily match the amplifier and Trace
Identification sensitivity.
All Micro Movements Signal Conditioning Amplifiers are fitted with filters that can be
switched ON/OFF. If a particular low cut off frequency is required for an application,
please consult the factory. Simple single pole filters to specification are included at no
extra cost provided they are specified prior to shipment of the order. Micro Movements Ltd
The Centre, Reading Road,
Eversley, Hampshire, RG27 0NB
Tel: +44 (0)1189 730200, Fax: +44 (0)1189 328872
www.micromovements.co.uk
M12-150A Lightbeam Oscillograph
Section 2.General Information.
2.1
The principle of operation follows from the ability to re-image a tiny light source as a
spot of light for each channel, which can be deflected across the full width of light
sensitive paper, by the mirror of a minuture galvanometer. The resulting record
becomes visible shortly after emergence from the recorder, by the action of the ambi
ent light on the recorded image, (latensification).
2.2
Introduction to the M12-150A Lightbeam Oscillograph Recorder.
The M12-150A recorder is a completely new concept in low-cost direct writing
recorders, for use in laboratory, aerospace, industrial, medical and portable applica
tions. It used a low power light source with a high performance optical system:
together with a servo controlled chart drive system, which gives an instrument of
high reliability with low power consump tion, ideally suited to field operation.
The performance of the lamp is optimised by operating it from a regulated supply
which eliminates the damage caused by short term overloads and supply fluctuations.
In the stand-by mode, the lamp is run below full power and is instantly brought up to
full power at the commencement of recording. The use of this technique considerably
prolongs the life of the lamp.
2.3
Recording Facilities.
Up to 12 channels of information can be recorded on a 150mm wide ro