General Information

Serial #

935 01202

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

metal casing with synthetic covering/ synthetic meter windows, side handles, controls, parts/ metal parts

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length

48.2 cm

Width

47.0 cm

Height

13.8 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Energy-electric

Category

Measurement

Sub-Category

N/A

Manufacturer

AKA

Hewlett Packard

Country

United States of America

State/Province

Unknown

City

Unknown

Context

Country

Canada

State/Province

Nova Scotia

Period

early 1970s+

Canada

An American made instrument of the early 1970's used at DREA (Defence Research Establishment Atlantic), now DRDC Atlantic (Defence R & D Canada - Atlantic), a department of National Defence. Canada's Defence Research Board was founded in 1940 to provide scientific support to all three armed services; in 1967 the Atlantic component in Dartmouth, NS became DREA. The current mandate of DRDC Atlantic is to conduct research and development in underwater and marine military technology for Canada's Navy and Air Force (Ref. 3). This instrument was put into operation 1971.01.10 as part of the Equipment Pool inventory at the Dartmouth facility and was primarily used by electrical engineers (Ref. 1).

Function

An instrument used to measure impedance, displaying impedance magnitude, impedance phase & frequency.

Technical

This instrument was marketed by HP as providing the design engineer with an easy-to-use , one-instrument method for checking impedance of components & circuits. Impedance of components, complex networks, & other tho-terminal devices was measured by connecting the device to the HP impedance meter, selecting the desired test frequency, & adjusting the impedance range switch. Both impedance magnitude in ohms & phases in degrees were read directly (Ref. 2).

Area Notes

Unknown

Details

Markings

black lettering on casing front reads "4800A VECTOR IMPEDANCE METER/ HEWLETT-PACKARD" with black & red lettering for control functions/ plate on back reads "HEWLETT-PACKARD/ SER. 935 01202/ MADE IN U.S.A." with black lettering for control functions/ black & yellow label on back reads "DREA/ 1618"/ silver lettering on part mounted on back reads "13525A CALIBRATION RESISTOR/ 1000 +- 0.2% OHMS 20 [degrees] C TO 30 [degrees] C/ CAPACITANCE < 1.O pF/ HEWLETT [logo] PACKARD/ MADE IN U.S.A."/ black lettering on parts mounted on front reads "hp [logo] 4801A DIRECT MEASUREMENT PLUG-IN" & "hp [logo] 00610A/ TERMINAL SHIELD"

Missing

appears complete

Finish

grey synthetic casing covering/ flat grey casing front/ brushed metal & plated parts/ black & red synthetic parts/ colourless transparent meter windows, white meter faces

Decoration

blue & silver HP logos on black synthetic side handles