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Oscilloscope 175A

Oscilloscope 175A; Hewlett-Packard, HP; (ID = 1090481) Equipment Oscilloscope 175A; Hewlett-Packard, HP; (ID = 1090483) Equipment
Oscilloscope 175A; Hewlett-Packard, HP; (ID = 1090485) Equipment
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Oscilloscope 175A; Hewlett-Packard, HP; (ID = 1090481) Equipment
Hewlett-Packard, HP;: Oscilloscope 175A [Equipment] ID = 1090481 933x654
Select picture or schematic to display from thumbnails on the right and click for download.
For model Oscilloscope 175A, Hewlett-Packard, (HP); Palo Alto, CA:
Hewlett Packard 175A oscilloscope front view, also showing HP 1754A and 1781A plug-ins (also separately listed in the Museum).
Country:  United States of America (USA)
Manufacturer / Brand:  Hewlett-Packard, (HP); Palo Alto, CA
Year: 1963 Category: Service- or Lab Equipment
Valves / Tubes 33: 12AU7 6CW5 1X2B 6DJ8 5651 6CL6 G205
Semiconductors (the count is only for transistors) Semiconductors present.
Wave bands - without
Power type and voltage Alternating Current supply (AC) / 115; 220 Volt
Loudspeaker - - No sound reproduction output.
Power out
from Model: Oscilloscope 175A - Hewlett-Packard, HP; Palo Alto
Material Metal case
Shape Tablemodel, with any shape - general.
Dimensions (WHD) 16.75 x 12 x 25 inch / 425 x 305 x 635 mm
Notes This listing is for the commercial version of the Hewlett Packard 175A oscilloscope, but is also applicable to the USA military versions AN/USM-186 and OS-175/U model designations, since HP was not prone to manufacture units designed exclusively for the military (a trait shared with Tektronix). Tube listing above only has unique values. There are twenty-four 6DJ8 and four 1X2B tubes in the mainframe portion of the unit (not including the plug-ins)and this unit makes extensive use of transistors in low-power applications. The pictured unit has the 1754A four-channel amplifier and 1781A delay generator in the two plug-in slots; these units are listed separately in the Museum. This oscilloscope has a maximum frequency display of 50 MHz, a function of the CRT design, independent of the plug-in specifications. It is a tube/transistor hybrid, with care in the design to minimize the number of different tube types used. The unit has a standard P31 phosphor CRT driven with a 12 kV accelerating potential, with optional P2, P7 or P11 phosphors available. The CRT design is unique for its day in that it applied the acceleration voltage to a thin spiral metal-gauze shield, a convex mesh with extremely small aperatures located at the junction of the tube neck just inside of where the tube begins to splay out to full screen size.
Net weight (2.2 lb = 1 kg) 79 lb (79 lb 0 oz) / 35.866 kg
Price in first year of sale 1'325.00 $

Model page created by Hank Kaczmarski. See "Data change" for further contributors.

All listed radios etc. from Hewlett-Packard, (HP); Palo Alto, CA
Here you find 355 models, 321 with images and 122 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.