WTB/LFS UK – Tektronix 521/521A PAL vectorscope Manual Wanted please! - Page 1
Forum section: electronics / general

author: Chris56000
author_rank: Frequent Contributor
timestamp: May 23, 2023, 04:29:21 am
content: Hi!Can anyone help me with a scan of the Tektronix 521/521A Pal Vectorscope Manual Tektronix P/Ns 070–1027–00 or 070–1794–00 please?I have been commissioned to try and design a unit to make the Philips PM5508/PM5509 type DEM pattern for lining–up PAL decoders in vintage CTVs, and to do this I will need to familiarise myself with the operation and use of this instrument!The 520 Manual is unsuitable as I am in the UK and therefore need a PAL instrument manual!There's one on eBay but the seller wants £100 in postage for it which is distinctly over the odds – I've had 465B manuals (about the same thickness and weight!) posted to me from the USA for less than £40, and that was recently as well!Chris Williams

author: Chris56000
author_rank: Frequent Contributor
timestamp: May 26, 2023, 12:26:38 am
content: I ended up having to pay the whopping £100 postage charge on the one that was available to buy – there was another cheaper copy but the listing said "ask for a postage quote" which didn't sound promising – last time I did that for a manual in the U.S. the the seller said he didn't want the bother of shipping it to me!!!!Chris Williams

author: PetefromCanada
author_rank: Newbie
timestamp: June 27, 2023, 09:13:42 am
content: Boy did that take me down memory laneI used the NTSC version of this particular vector scope daily for years in my first gig after school at a transmitter site and then other tek vector scopes for 20 years. what a monster in terms of size! I don't recall the manuals been all that usefull for understanding video alignment, you may find it more usefull to find an older UK book on broadcast engineering. I don't think the tests will be all that different from NTSC aside from the Phase Alternate Line (PAL) aspect of the signal and the lower refresh rate. WHile we had a huge quantity of tektronix gear I can't recall servicing much beyond the graticule lights so it may serve you wellI'm amazed that there is any money to be made doing anything in analogue! sounds like fun

author: Chris56000
author_rank: Frequent Contributor
timestamp: June 28, 2023, 04:25:20 pm
content: The T & M sellers obviously think there's money to be made in selling these pieces of gear judging by the price they ask for them!. . .However the work I intend doing is a courtesy for members of the UK Vintage Radio Forum, who want to extend a design originally published in 1979 by Malcolm Burrell in the UK "Television" magazine – because of the special P.A.L. encoding and phasing/switching needed, this sort of design wouldn't be feasible without a Vectorscope!I'm hoping the Manual turns up from the USA, it cost me enough!Chris Williams

author: Chris56000
author_rank: Frequent Contributor
timestamp: July 30, 2023, 07:50:44 pm
content: Hi!Update – the correct 521A PAL Vectorscope Manual finally got to me in the UK last week – unfortunately my Brother A3 All–In–One has had to go away for a repair/replacement under warranty so I've no means of scanning it for the foreseeable future I'm afraid!Chris Williams