Rohde & Schwarz AFQ100A I/Q vector modulation generator

Intro

Some photographs and materials related to AFQ100A generator.

Manual

Firmware / disk image

Teardown

Power supply replacement

Original power supply was faulty and had bad output MiniFit Jr connector with noticeable discoloration.

Replacement from eBay was acquired from a similar R&S insturment but with slightly different product code K10035. This power supply is also made by TDK-Lambda NV-175, part-number NV1-453TTH-N2-C. This supply also had five channels:

  • Channel 1 – +5.2V 25A
  • Channel 2 – +3.3V 15A
  • Channel 3 – +12.2V 5A
  • Channel 4 – -12V 2A
  • Channel Aux 5 – +13.5V 1A

Sadly new TDK-Lambda built power supply also had crappy chinese low-cost capacitors and I had to replace them with something nice and properly reliable.

Hard-drive replacement

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Author: Ilya Tsemenko
Created: Aug. 4, 2023, 3:47 a.m.
Modified: April 1, 2026, 12:12 p.m.

References