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Hi all, I'm hoping someone here has practical experience of airborne circuit breaker specifications that claim to 'exceed MIL-STD-202 method 204 curve A, 10 to 500Hz'or others which state '10g from 10Hz to 500Hz' If you know this MIL spec you will understand that between 5 Hz and 54Hz it...

Hi folks, (I don't normally cross-post, but I got no answers under the Comms/Signal Processing forum) We have some ruggedised laptop computers which run a data file transfer application under Windows NT. These have unreliable performance over the RS422 serial interface port (running at 19.2k...

Hi folks, We have some ruggedised laptop computers which run a data file transfer application under Windows NT. These have unreliable performance over the RS422 serial interface port (running at 19.2k with a hard-wired link to the host device) caused by occasional lost characters. (We know the...

Hi folks, Does anyone have experience of the correct way to accurately measure X-ray emissions from magnetrons? In one of our small radars we have a need to measure if any x-rays are generated, and if so, is the level "hazardous" to service personnel. The magnetron is running at an anode...

I'll try this forum first .... I'm looking for suppliers of T1 3/4 filament lamps fitted with NVG filters, or who can supply separate filters for this size lamp, so that I can make existing equipment NVG compatible.

Has anyone out there heard of the need to break-in new magnetrons at reduced power for the first few hours? We recently experienced an early failure in a new radar being built in production, and the magnetron maker said it failed because we should not have used full power so soon!

Hi folks, Apologies for mutiple posting but it's difficult to know where best to post this query. We have an old product which uses the 87C196 microcontroller and I need to program some more blank parts for spares. The problem is I can't be sure of the correct hex file format to setup on our...

Hi folks, Apologies for mutiple posting but it's difficult to know where best to post this query. We have an old product which uses the 87C196 microcontroller and I need to program some more blank parts for spares. The problem is I can't be sure of the correct hex file format to setup on our...

Hi folks, We have an old product which uses the 87C196 microcontroller and I need to program some more blank parts for spares. The problem is I can't be sure of the correct hex file format to setup on our Data I-O 2900 programmer for reading in the file from disk. The file header looks like...

Hi folks. I am looking for a replacement VCO for one that has gone obsolete. I don't expect a drop-in replacement, so first off I thought I'd look for likely manufacturers. I'm not having much luck with the various search engines on the Web but have found General Microwave, Sivers and SigTech...

As a bit of nostalgia I want to design a super-high fidelity valve amplifier but using modern design simulation techniques first - rather than the way we used to do it! We use Simetrix here at work, and I have found some models on the internet but they are a bit variable in modelling quality...