Description
Tektronix FG 502 Function Generator TM500 Plugin BNC 50 Ohm As-Is
The Tektronix FG 502 is a function generator plug-in module designed for use in Tektronix TM500-series mainframes. It generates sine, square, and triangle waveforms across a wide frequency range, with front-panel controls for frequency, amplitude, and DC offset. The module connects via the TM500 card-edge interface and draws power directly from the host mainframe — no separate power supply required. This unit is sold strictly as-is for parts or repair with no functionality guarantee.
Specifications & What's Included
- Model: Tektronix FG 502 Function Generator
- Form factor: TM500 plug-in module (card-edge connector)
- Waveform types: Sine, Square, Triangle
- Main output connector: BNC, 50 Ohm
- Reference output: 2.5V from 50 Ohm (second BNC, front panel)
- Front panel I/O: Gate In, VCF In, Trig Out (all BNC)
- Front panel controls: Frequency dial (Hz), Frequency Multiplier selector, Amplitude, Offset, Function selector
- Compatible mainframes: Tektronix TM500 series
- Power: Supplied by host TM500 mainframe
- Sold as-is — module only; no cables, accessories, or mainframe included
Applications
The FG 502 was a widely used plug-in function generator in electronics labs, educational settings, and production test environments during the 1970s and 1980s. The TM500 mainframe system was Tektronix's modular instrumentation platform of that era — individual plug-in modules (oscilloscopes, function generators, multimeters, counters, and more) snapped into shared TM500 or TM5000 mainframes, allowing engineers to build a compact, configurable bench from a common power and display chassis. The FG 502 specifically served as the signal-source module in that ecosystem, providing a calibrated waveform reference for circuit testing, frequency response sweeps, and trigger generation. Vintage test equipment collectors and labs still maintaining legacy TM500 setups actively seek working or restorable FG 502 modules.
This Tektronix FG 502 Function Generator TM500 plugin is being sold strictly as-is for parts or repair — no functionality is guaranteed. The unit has not been tested at our facility. Cosmetically, the front panel, controls, and BNC connectors show normal wear consistent with typical lab use. The internal components, visible in the side photo with the cover removed, appear physically intact with no obvious damage. No accessories, cables, or mainframe are included. Please view our photo set and contact us if you have any questions.
Warranty Information
Additional Information
Brand: |
Tektronix |
Model: |
FG 502 |
MPN: |
FG502 |
Type: |
Function Generator Plugin Module |
SKU: |
40547 |
Form Factor: |
TM500 Plugin Module |
Output Impedance: |
50 Ohm |
Reference Output: |
2.5V from 50 Ohm |
Output Connector: |
BNC |
Front Panel Inputs: |
Gate In, VCF In, Trig Out |
Compatible With: |
Tektronix TM500 series mainframes |
Seller Notes: |
Module only — no cables, accessories, or mainframe included. |
Country/Region of Manufacture: |
United States |
Condition Notes: |
Tektronix FG 502 Function Generator TM500 plugin sold as-is for parts or repair. Not tested; no functionality guaranteed. Front panel and BNC connectors show normal lab wear. Internals appear intact. No accessories included. |
Front Panel Inputs/Outputs: |
Gate In, VCF In, Trig Out (BNC) |
Waveform Types: |
Sine, Square, Triangle |
Interface: |
TM500 card-edge connector |
Power Source: |
Powered by host TM500 mainframe |
California Prop 65 Warning: |
WARNING: This product can expose you to chemicals including lead and lead compounds, and DEHP (a phthalate), which are known to the State of California to cause cancer and birth defects or other reproductive harm. Go to P65Warnings.ca.gov |