This apparatus consists of two similar electronics enclosures with various dials, switches, and sockets on a front-facing console. Both have metal handles on the top surface:
2024.ph.880.1: This unit differs from its counterpart as it includes a frequency trim dial on the front console.
2024.ph.880.2: This unit differs from its counterpart as it has black electrical tape wrapped around the front console. It has a four-pin plug emerging from the back of the case.
Accession Number: 2024.ph.880.1-2
Alternative Name: Pulse Generator
Primary Materials: Iron Alloy
Both units are marked with the model number: “EW88-003”
2023.ph.880.1: A label at the rear of the unit includes the following stamped serial number: “EM 70010”
2023.ph.880.2: A label at the rear of the unit includes the following stamped serial number: “EM 70011”
Peeling white labels at the top of this unit reads as follows: “CAREFUL! Altered Power Supply.”
Each unit: Height = 23.5, Width = 18, Length = 27.
These units, each containing a clock crystal, were used to synchronize two signals. The dial on 2024.ph.880.1 was adjusted until the clock signal matched 2024.ph.880.2.
Both units are heavily worn. Both are covered in various places with tape (duct and electrical) as well as old adhesive from tape and labels.
Associated Instruments:
Manufacturer: University of Toronto Machine Shop.
Date of Manufacture: c. 1970 to 1990.
This artifact is part of a small collection gathered from the office of Prof. Nigel Edwards of the University of Toronto Department of Physics in March of 2022.
Additional Information and References:
Historical Notes: