TM503
The Tektronix TM503 is a three-bay mainframe for the TM500 system.
All bays are low-power. It has a single strap carrying handle on the right side.
The TM503A moves the power switch to the rear and has a swiveling carrying handle that can also act as a stand.
The TM503B retains the power switch position and changes the handle material to plastic. It also allows the power supply/backplane part to be removed from the case so that modules to be repaired on the bench without using extenders (see link below). It also has openings for the TM5000 GPIB feature, but not the connectors nor the power good signal for TM5000 plugins.
Key Specifications
- please add
Option 2
Option 2 adds internal pin headers for each slot as well as rear 50-pin and BNC connectors, allowing for custom wiring to, from and between plugins.
On the standard TM503, cutouts for three BNC sockets have been made in the rear frame, meaning that the user only needs to drill holes in the rear cover plate to install the sockets.
Option 7
Option 7 adds barrier keys (214-1593-02) and connections on the rear interface to allow connections between the DC502-option7 to either a TR502 or a SW503 such that the center or marker frequency of a sweep can be read of the DC502.
Links
- TM503B @ amplifier.cd
- TM503 repair @ paulcarbone.com
- Tektronix TM503 Mainframe Repair by NFM @ YouTube (replacement PCBs)
- The Tektronix Function Generator Teardown - Paul Rako @ electronicdesign.com
Documents Referencing TM503
| Document | Class | Title | Authors | Year | Links |
|---|---|---|---|---|---|
| Tekscope 1972 V4 N3 May 1972.pdf | Article | TM500 series - A New Dimension in Plug-in Instrumentation | Bob Ragsdale | 1972 | TM500 system • TM501 • TM503 • FG501 • FG502 • RG501 • PG501 • SG502 • DC501 • DC502 • PS501 • PS502 • PS503 |
| Tekscope 1975 V7 N2.pdf | Article | The TM500 Mobile Test Lab | Dick Brown | 1975 | TM503 • MICS |
| 067-1201-99 TM500 Power Module Constr Note.pdf | Application Note | TM500 Power Module Tester and Utility Power Supply | Warren Collier | 1977 | TM500 • TM501 • TM503 • TM504 • TM506 • TM515 |
Gerbers
- TM503 replacement PCB's (ZIP) (See TM503 Repair link below)
Pictures
TM503
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TM503 inside
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TM503 backplane
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TM503 PSU
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TM503A
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TM503A front
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TM503A top
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TM503A rear
TM503B
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TM503B Front view with plugins
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TM503B Front view without plugins
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TM503B
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TM503B side view
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TM503B rear view
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TM503B top view
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TM503B bottom view
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TM503B power supply front view
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TM503B power supply top view
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TM503B power supply rear view
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Using a TM503B for repairing plugins
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Using a TM503B for repairing plugins
Schematics
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TM503 schematic
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Block diagram
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Interface connectors
