Hameg HM5005 Spectrumanalyzer 500MHz test teardown ANALOG - Page 1
Forum section: electronics / testgear

author: oz2cpu
author_rank: Frequent Contributor
timestamp: September 20, 2023, 08:55:52 pm
content: Today spectrum analyzers are so fancy digital storage and all that,and they are finally getting fast with the screen update,maybe many of us still rock a few of the older spectrum analyzers from 1980-2000 ??or remember how long sweep time takes :-)here is a cool, ultra fast and all analog spectrum analyzersee my latest video :https://youtu.be/Lixk6Io0_4Y

author: pcbcrew
author_rank: Contributor
timestamp: September 21, 2023, 05:59:24 am
content: Thank you for sharing.I watched the video and found it's very interesting instrument.After watching your video, I bought one from second-hand shop at 900RMB (~$120).I thought it would be useful for basic EMC pre-compliance testing, as it is lightening fast as you've shown in the video.

author: oz2cpu
author_rank: Frequent Contributor
timestamp: September 21, 2023, 07:54:06 am
content: wow great , yes it is lightning fastsince what you see on the screen is RF levels right here and now !we use it for RF communication check of data units,specially frequency hopping spread spectrumwith time division RX TX it show exactly what is going on, who tx and why rx each packagevery easy for debugging.when you rarely need a picture of the screen, you just take it with your phone camera :-)yes it sounds a like bit lame solution, but it works fine.

author: Performa01
author_rank: Super Contributor
timestamp: September 21, 2023, 11:27:35 am
content: Ive purchased one of the first HM5006 back in the nineties of the last century:https://cdn.rohde-schwarz.com/hameg-archive/hm5005_5006_english.pdfThis machine has the tracking generator fitted, the lowest resolution bandwidth was 12.5 (not 20) kHz and it was powered from an SMPS.It was an affordable option for hobyists at that time - even cheaper than their top analog oscilloscopes. In fact, as far as I remember, it was equivalent to about €1.100,- back then, wheres a triple beam HM1005 was about €1.500,-Well, with a RBW of 12.5 or even 20 kHz and a span of only 500 MHz it easily can be fast. Any modern SA can be blazingly fast too under such conditions. The same goes for the FFT on modern scopes under comparable conditions.This instrument looks like a useless toy by today's standards (in terms of bandwidth and RBW, accuracy, measurements/applications/tools), but it sure had its place among radio amateurs back then. For instance, I particularly bought it when I had to design a crossover network (duplexer) for a 70 cm digipeater - hence also the tracking generator.Later on, Hameg introduced similar models, with 1 GHz bandwidth and adapted RBW more suitable for EMI pre-compliance testing.

author: Brannigan
author_rank: Contributor
timestamp: December 19, 2023, 03:16:10 pm
content: Good timing, and thanks for the video.I just picked up a HM5006 and it seems to be the same vintage as yours. One thing is puzzling me. Under the CRT there are two jacks lableled "PROBE POWER", and "PHONES" and an adjustment screw labeled "VOL.", but none of the manuals I could find show them. Instead, the manual shows two adjustment screws labeled "Y POS." and "Y AMPL.".Can you tell me what these mystery functions are for? What audio range signal would be available for listening? I'm confused.Thank you in advance.Bob.

author: sorenkir
author_rank: Regular Contributor
timestamp: December 20, 2023, 08:49:11 am
content: Hi,I think you can find explanations in the HM5010/11 manual (the 1GHz version):https://www.sm5cbw.se/hameg/hmspa/hm5011-man.pdfMichel.