[GER] FS: GF21 Sine wave function generator from eastern Germany (repair needed) - Page 1
Forum section: electronics / general

author: Dachpappe
author_rank: Contributor
timestamp: January 02, 2016, 10:06:11 pm
content: Hello everyone!As the new year starts I want to free some space in my "lab" as unused equipment is already piling upThe first thing I have to offer is an old function generator type GF 21, produced in the former GDR (eastern Germany) in 1974. The generator is capable of 1Hz to 3MHz at up to 3V amplitude. The company who produced them was "VEB Präcitronic" in Dresden. I bought the generator 2 years ago in unknown condition and planned to repair it, but never had time for. Currently the generator turns on and outputs a signal after some seconds of warming up. The frequency and amplitude are quite ok, but the switches are a bit crusty and (the biggest problem) there is a significant offset at the output (About 1,5V at 2,5V amplitude, lower at lower amplitudes). Over time the offset decreases a bit. My suggestion is a problem in the power supply, but i dont know as I never checked the voltages (I know, it's a shame for a guy who studies EE but uni and workplace are very time consuming). I also got the manual with all schematics (original and pdf) and the service manual (pdf). They will be includedWell, as I dont want to earn a fortune you can suggest a price(Are 10-20€ realistic?)If someone wants to pick up the device, I'm located in ThuringiaShipping is also possible, but not overseas as there is always trouble...And here are some photos:-front-back-output at shown settings-output over time (few minutes)Regards

author: TAMHAN
author_rank: Frequent Contributor
timestamp: January 03, 2016, 05:04:57 pm
content: Hello,15€ plus shipping to my family office in Austria? They are, by now, experts in test gear handling.Final destination will be Slovakia (former brotherland), where it will act as relief for its capitalist brother in crime (AWG2021 whose case I cant open for love of god).Also, will you be at the Linuxtag in Karl-Marx-Stadt this year?

author: Dachpappe
author_rank: Contributor
timestamp: January 03, 2016, 06:55:51 pm
content: Hi,sounds good to me! It's always nice to give a piece of equipment a new homeDo you prefer a special shipping provider? Otherwise I can ask at work which conditions we have for UPS international shipping.PS1: I will not be at the Linuxtag in Chemnitz as I'm more the hardware guyPS2: Are you collecting vintage test gear?Regards-Dachpappe

author: TAMHAN
author_rank: Frequent Contributor
timestamp: January 04, 2016, 03:07:06 pm
content: Hello,thank you so much for your reply. In fact, no, I want to use the device in my lab - I do all kinds of work, and want to prolong the life of my TEG AWG2021 by getting a second generatorRe shipping: just take the cheapest option we can find

author: Dachpappe
author_rank: Contributor
timestamp: January 12, 2016, 11:19:40 am
content: HI,I sent you a message concerning shipment

author: TAMHAN
author_rank: Frequent Contributor
timestamp: January 31, 2016, 06:26:11 pm
content: Sorry for the slow reply.I wanted to confirm that the Generator has arrived. But Swimbo and I did not have the time to unbox and restore it yet. The moment we do, we will report in again.Either way: Dachpappe was a very nice man to do business with.