Description
Tektronix FG 503 Function Generator Plug-In 1Hz-3MHz TM500 TM501 VCF BNC
This is a plug-in function generator module for Tektronix TM500 and TM501 mainframe chassis. It generates sine, square, and triangle waveforms from 1 Hz to 3 MHz with voltage-controlled frequency modulation.
Specifications & What's Included
- Frequency range: 1 Hz – 3 MHz with multiplier switch (x1, x10, x100, x1k, x10k, x100k)
- Waveforms: Sine, square, triangle, and DC offset
- Output impedance: 50 ohms (BNC connector)
- Secondary output: 2.5V into 600 ohms
- VCF (voltage-controlled frequency) input for modulation
- Trigger output; powered by mainframe (no standalone power required)
- No accessories included; missing removal handle at bottom left corner
Applications
Function generators of this type were used in test and measurement setups for signal generation, frequency response testing, and circuit characterization. The FG 503 integrates into Tektronix modular instrumentation systems, commonly found in electronics labs, service centers, and manufacturing test environments from the 1970s onward. The VCF input allows swept-frequency and modulation experiments.
Condition: For Parts or Not Working
This Tektronix FG 503 Function Generator Plug-In is being sold as-is. The removal handle on the bottom left corner is missing. This unit previously tested good, but we are no longer able to test it and are therefore listing it in as-is condition with no functionality guarantee. It is suitable for parts, repair, or by a buyer willing to accept the untested status. Please view our photo set and contact us if you have any questions.
This Tektronix FG 503 Function Generator Plug-In is being sold as-is. The removal handle on the bottom left corner is missing. This unit previously tested good, but we are no longer able to test it and are therefore listing it in as-is condition with no functionality guarantee. It is suitable for parts, repair, or by a buyer willing to accept the untested status. Please view our photo set and contact us if you have any questions.
Warranty Information
We stand behind every item we sell with a 30-day money-back guarantee. If your item arrives not as described, you may return it within 30 days for a full refund. Please inspect your purchase upon arrival and contact us with any questions.
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Additional Information
Brand: |
Tektronix |
Model: |
FG 503 |
MPN: |
FG503 |
Type: |
Function Generator Plug-In |
SKU: |
40572 |
Condition: |
As-Is / For Parts or Not Working |
Seller Notes: |
Sold as-is. Missing removal handle (bottom left corner). No accessories included. |
Country/Region of Manufacture: |
United States |
Form Factor: |
Plug-In Module (TM500/TM501 Mainframe) |
Compatible With: |
Tektronix TM500, TM501 Mainframe Series |
Frequency Range: |
1 Hz – 3 MHz |
Output Impedance: |
50 Ohms |
Secondary Output: |
2.5V into 600 Ohms |
Waveforms: |
Sine, Square, Triangle (and DC Offset) |
Interface / Connectors: |
VCF In, Trig Out, Output (BNC) |
Frequency Control: |
Multiplier switch (x1, x10, x100, x1k, x10k, x100k) + dial |
Modulation: |
VCF (Voltage Controlled Frequency) input |
Power Requirements: |
Powered by TM500/TM501 mainframe (no standalone power) |
Review Status: |
Auto-Approved (needs review) 2026-07-04 |
Condition Notes: |
Tektronix FG 503 Function Generator Plug-In sold as-is. Missing removal handle (bottom left corner). Previously tested good but can no longer be tested. No functionality guaranteed. For parts or repair. |