Wavetek 142 Generator
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Model:
142
Date:
1975
Category:
Group:
Description:
HF VCG Generator
Information
PURPOSE OF THE EQUIPMENT
The model 142 HF VCG Generator provides sine, square,
triangle, positive pulse, and negative pulse outputs (with a
separate sync output) over a 0.0005 Hz to 10 MHz frequency
range. Frequency range selection is provided in ten decades;
and a vernier control permits adjustment to within
approximately 1% of the range selected.
The symmetry of any output waveform is continuously
adjustable from 1:19 to 19:1 (5%-95% to 95%-5%). Pulse
outputs as narrow as 50 nanoseconds having repetition rates
as high as 1 MHz {on-off ratio as great as 19:1} can be
generated in either polarity. Varying the symmetry of the
triangle function will produce a sawtooth or "ramp" signal
with a rise or fall rime as steep as 50 nanoseconds at a
recurring rate of 1 MHz, Even the symmetry of the sine wave
may be varied over this 1:19 to 19:1 range if desired. When
the symmetry control is used, however, the indicated
frequency is divided by a factor of approximately 10,
A VCG input allows the output to be frequency modulated, dc
programmed, or swept over a 1000:1 ratio. The dc offset of
the 30V p-p maximum signal output can be controlled manually
or electronically. A 60 dB calibrated step attenuator and a
20 dB vernier provide an overall attenuation of 80 dB;
permitting signal levels as low as
1.5 mV p-p. Both the output waveform and the dc offset are
attenuated by the 60 dB step attenuator.
With this instrument it is possible to simultaneously
program and sweep the output frequency, select the output
symmetry desired, and manually or electronically vary the dc
offset. This capability, coupled with the variety of
waveforms available and precision output amplitude control,
makes the model 142 an extremely versatile instrument for
engineering, manufacturing, and laboratory applications.
Manual type:
Service and User Manual
Pages:
52
Size:
2.33 Mbytes (2445608 Bytes)
Language:
english
Revision:
K
Manual ID:
Date:
1975 02 01
Quality:
Scanned document, reading partly badly, partly not readable.
Upload date:
2018 08 12
MD5:
bb5da53a1be9d8f8481f591ac19d1331
Downloads:
527
Information
Section One INTRODUCTION
Purpose of the Equipment ...
General Physical Description ...
Specifications ...
Accessories and Associated Equipment ...
Section Two INSTALLATION AND OPERATION
Mechanical Installation ...
Electrical Installation ...
Operating Controls . ...
Installation Checks ...
Operating Procedure ...
Section Three CIRCUIT DESCRIPTION
Simplified Block Diagram Analysis ...
Functional Block Diagram Analysis
Supplemental Circuits . ...
Section Four MAINTENANCE
Access Instructions ...
Calibration Instructions ...
Corrective Maintenance ...
Section Five DIAGRAMS, ADDENDUMS, AND PARTS LISTS
Diagrams ... .
Parts Lists ...
This manual provides descriptive material and instructions
for the installation, operation, maintenance, and repair of
this instrument. Wavetek's product improvement program
ensures that the latest electronic developments are
incorporated in all Wavetek instruments by the addition of
circuit and component changes as rapidly as development and
testing permit. Due to the time required to document and
print instruction manuals, it is not aiways possible to
incorporate the more recent changes in the released manual,
in this case, data will be found on engineering change
sheets at the rear of the manual. If no change sheets are
included, the manual is correct as printed.
Manual type:
Service and User Manual
Pages:
40
Size:
3.78 Mbytes (3959642 Bytes)
Language:
english
Revision:
K
Manual ID:
8R-2/75
Date:
Quality:
Scanned document, all readable.
Upload date:
2011 02 21
MD5:
fec447a94e28901e43696ff1ca6e4071
Downloads:
1607