Hewlett Packard 211A Generator
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Model:
211A
Data:
1955
Kategoria:
Grupa:
Opis:
Square Wave Generator
Informacja
The Model 211A Square Wave Generator is a precision wide range instrument particularly suited for use with a fast Oscilloscope for video Amplifier testing, permitting a rapid examination of Amplifier frequency characteristics up to many megacycles. In computer, pulse code, telemetering, and similar applications it offers great convenience as a variable trigger source for switching purposes. In television work it can serve as a bar Generator. In high frequency applications it is valuable as a modulator source. It also finds use in testing variety of devices such as attenuators, filters, delay tines and audio systems.
The Model 211Ahas been designed with two outputs, one 75-ohm output and one 600-ohm output. The rise time of the signal from the 75 -ohm output is only 20 millimicroseconds, which is sufficiently fast to test
the response of video devices out to approximately 20 megacycles or to provide a high speed triggering voltage of variable rate. The peak-to-peak amplitude of the signal across the 75-ohm internal impedance is 7 volts, or 3.5 volts peak to peak into a75-ohm external load. This output level may be adjusted with a 60-db step attenuator in combination with an amplitude control, a particularly desirable arrangement when low output levels are required.
The second output from the Generator provides 55 volts peak-to-peak from a source impedance of 600 ohms. The rise time of this signal is less than 0.1 microsecond with the output level controlled separately from that of the 75-ohm output. Both outputs are used simultaneously.
Typ ręczny:
Serwis i User Manual
Strony:
40
Rozmiar:
13.58 Mbytes (14243605 Bytes)
Język:
english
Rewizja:
Ręczny ID:
00093-3
Data:
1962 04 01
Jakość:
Skanowany dokument, wszystko czytelne.
Data przesłania:
2020 06 14
MD5:
6782386d357de75f9fb9fcce8eff722f
Pobrane:
350
Informacja
Serials Prefixed: 026-
I GENERAL INFORMATION ... 1-1
1-1. General Description ... 1-1
1-9. Damage in Transit ... 1-2
1-11. Power Transformer Conversion . . 1-2
n OPERATING INSTRUCTIONS ... 2-1
2-1. Controls and Terminals ... 2-1
2-11. Instrument Loading ... 2-1
2-17. Ringing ... 2-1
2-19. External Sync Operation ... 2-1
2-22. Pulses ... 2-3
2-24. Balanced Output ... 2-3
m THEORY OF OPERATION ... 3-1
3-1. Introduction ... 3-1
3-3. Sync Trigger ... 3-1
3-7. Multivibrator ... 3-1
3-12. Clipper Amplifier ... 3-1
3-15. Power Amplifier ... 3-2
Section Page
IV MAINTENANCE ... 4-1
4-1. Introduction ... 4-1
4-3. Cabinet Removal ... 4-1
4-5, Equipment Required ... 4-1
4-7. Trouble Localization ... 4-1
4-12. Tube Replacement ... 4-1
4-15. Adjusting the Power supply ... 4-1
4-20. Frequency Calibration ... 4-4
4-24. Adjusting External Sync Sensitivity
Sync Sensitivity ... 4-7
4-27. Waveform Observation and
Measurement ... 4-7
4-41. Servicing Etched Circuit
Boards ... 4-8
V REPLACEABLE PARTS ... 5-1
5-1. Introduction ... 5-1
5 -2, Ordering Information ... 5-1