Fwd: [GreenKeys] ATLANTIC RESEARCH DATA TECH DTS-1-M470/483
ard at p850ug1.demon.co.uk
Thu Dec 9 16:13:04 CST 2010
> Forwarded from the Greenkeys list.
> Looks like an interesting piece of test gear:
> You can either use it as a loop keyer, or, if you need loop power, it will
> provide that as well.
> You can send distorted signals up to 44 per cent switched bias, and can
> measure incoming bias and distortion as well.
I still have (and use) a TDMS5 made by ATE (part of Plessey I beleive).
This is a somewaht simialr thing that wil lsend the Quick Brown Fox
message (albeint in Baudot only), or a repeated character (set of toggle
switches) with cotnrollable distortion. It'll also display distortion on
the incoming signal, test relays for bais and transit time, etc.
Alas I don't have the companion TDMS6 which is a receiver only, but does
rrater more tests on the incoming signal
Oh, and it is entirely valved (maybe with semiconsductor diodes, but none
of those new-fangled transistors!) . Yes I ahve the manual includign
schematics and parts lists.
[ In case you'rewondering, the Quick Brown Fox messge is stored on a
rtoating disk with sping contacts to read off the 5-bit characters.
There's an exploded view of the mechanism with set-up instruction in the
I also have a much later test signal geneator (only, no receive fuctions
at all) made by Trend. I really mustget that going sometime..
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