Renseignements généraux

Nº de série

S/O

Nº de partie

1

Nombre total de parties

3

Ou

S/O

Brevets

S/O

Description générale

Primarily metal with synthetic knobs and cables.

Dimensions

Remarque : Cette information reflète la taille générale pour l’entreposage et ne représente pas nécessairement les véritables dimensions de l’objet.

Longueur

59,0 cm

Largeur

22,5 cm

Hauteur

31,0 cm

Épaisseur

S/O

Poids

S/O

Diamètre

S/O

Volume

S/O

Lexique

Groupe

Physique

Catégorie

Électronique

Sous-catégorie

S/O

Fabricant

Ou

Tektronix

Pays

Inconnu

État/province

Inconnu

Ville

Inconnu

Contexte

Pays

Canada

État/province

Inconnu

Période

Purchased 01/10/1977

Canada

Taken from Acquisition proposal: Quoting from the NRCan web site: http://www.geod.nrcan.gc.ca/aboutus/gravity/grvinsts_e.php The Geodetic Survey Division owns and operates two absolute gravity instruments, JILA-2, and the A-10. It also collaborates with the GSC in the operation of a second instrument, FG5-106. The JILA-2 was acquired in November, 1985 and FG5-106 in April 1993. The A-10 instrument was acquired in 2000. The JILA-2 has been upgraded four times since it's acquisition with new computer control, new lasers, GPS clock and ancillary equipment. These upgrades were necessary in order to make it more efficient, field worthy, lighter and easier to use. Instrument modifications and tests are essential for Canada to remain at the leading edge in gravimetry. Because of their high accuracy of a few parts per billion, the instruments are used to establish, strengthen and expand the Canadian Gravity Standardization Net. Large calibration ranges are also established for the purpose of calibrating the complement of relative gravimeters owned by the Gravity and Geodetic Section. Smaller calibration ranges are maintained for industry so that companies can evaluate and compare their instruments against the established standard. Examples are the small calibration ranges between Ottawa and Gananoque and between Orangeville and Collingwood. The absolute gravimeters participate on a regular basis in international campaigns and comparisons in order to maintain the high standards of accuracy required of these instruments. The two most recent comparisons were done at the Bureau International des Poids et Mesures in Sevres, France, in 2001, and at Boulder, Colorado, USA, in 1995. The BIPM comparisons for instance occur every four years. Comparisons at the Canadian Absolute Gravity Site (CAGS) have been carried out every year with some exceptions since 1988 with the National Oceanic and Atmospheric Administration (NOAA) under an MOU.

Fonction

A piece of standard laboratory test equipment in a portable form, with a screen on which wave oscillation is represented, used in almost any electronics activity. Artifact consists of 3 instruments and 1 mainframe. Instrument 1: 7603 Oscilloscope; Instrument 2: DF1 Display formatter; Instrument 3: Logic Analyzer.

Technique

These items have all played a role in Canada's position at the leading edge of gravimetry. Obviously the leading edge of 30 years ago is no longer the leading edge so NRCan has upgraded its instruments on a regular basis.

Notes sur la région

Inconnu

Détails

Marques

Print upper right corner of oscilloscope reads: "7603 OSCILLOSCOPE [Tektronix logo]"/ Print lower right corner reads: "TEKTRONIX INC."/ Orange label with black print reads: "GSC[/] CGC/ 14089"/ Black and silver label reads: "PROPRIETE DE/ GR00099/ ENERGY, MINES & RESOURCES"/ Second instrument, front panel reads: "DF1 DISPLAY/ FORMATTER/ TEKTRONIX [registered]"/ Orange label with black print reads: "GSC[/] CGC/ 14087"/ Black and silver label reads: "PROPRIETE DE/ GR00097/ ENERGY, MINES & RESOURCES"/ Third instrument, front panel reads: "LOGIC ANALYZER/ TEKTRONIX [registered]"/ Orange label with black print reads: "GSC[/] CGC/ 14088"/ Black and silver label reads: "PROPRIETE DE/ GR00098/ ENERGY, MINES & RESOURCES"/ Back of mainframe has settings for the instruments.

Manque

S/O

Fini

Grey, green and blue metal panel front with black print. All three instruments are primarily metal with synthetic knobs. All three instruments are housed in a mainframe. Mainframe is made of metal and painted turquoise. Synthetic handle on top. There is one grey cables attached to mainframe.

Décoration

S/O