DEAR JOHN:

Document Type: 
Document Number (FOIA) /ESDN (CREST): 
CIA-RDP78B04747A000900050028-8
Release Decision: 
RIPPUB
Original Classification: 
K
Document Page Count: 
6
Document Creation Date: 
December 28, 2016
Document Release Date: 
June 17, 2002
Sequence Number: 
28
Case Number: 
Publication Date: 
July 19, 1963
Content Type: 
LETTER
File: 
AttachmentSize
PDF icon CIA-RDP78B04747A000900050028-8.pdf167.2 KB
Body: 
Approved For Release 2002/07/10 : CIA-RDP78B04747A000900050028-8 Dear John, Please find enclosed a copy of the letter we discussed during our cation this morning and a copy of my reply I discussed) the trouble you are having with your equipment and he suggested you might care to try the following Power Supply chassis set up procedure. Check the 9 volts supply and, if it is within tolerance (*/.. .73 v) set the 2V line to exactly 2/9 of the 9 volt supply reading, Sincerely yours, Declass Review by NIMA/DOD STATINTL STATINTL STATINTL STATINTL Approved For Release 2002/07/10 : CIA-RDP78B04747A000900050028-8 Approved For Release 2002/07/10 : CIA-RDP78BO4747A000900050028-8 Dear John, Just after the other letter had been typed up I received STATINTL another letter He states that the Dataphone equipment will not include full comprehensive ternary check. They do recommend that Input Check be included and they will be supplying this. He is quite certain that the delivery date he quoted you will be met. The only reason this could be delayed is if you visit in September as suggested and, as a result of discussions with our engineers, you bting in changes on the equipment. Very truly yours, STATINTL STATINTL Approved For Release 2002/07/10 : CIA-RDP78BO4747A000900050028-8 Approved For Release 2002/07/10 : CIA-RDP78BO4747A000900050028-8 July 19, 1963 STATINTL Ref. Dat aphon a fife adou t STATINTL 'hank you for your letter of July 12th. I phoned today to discuss the problem. He stated that the actual wiring of the switch would depend STATINTL on and he didn't know off hand if the twelfth tag would wired in or not. Information will not be required from this position and if it is wired In, the wiring can be removed. STATINTL STATINTL STATINTL dly you Approved For Release 2002/07/10 : CIA-RDP78BO4747A000900050028-8 Approved For Release 2002/07/10 : CIA-RDP78BO4747A000900050028-8 BEST COPY Available Approved For Release 2002/07/10 : CIA-RDP78BO4747A000960050028-8 Approved For Release 2002/07/10 : CIA-RDP78BO4747A000900050028-8 Thank, you .for-your letter of July 5th,;. we ,peed.. to have reached steiern te;. on the s giies on Ak you say , of E.O.T. T - will , tow to i;veell the.faots 'which le _ m e to Qnq .1re;, in the first'-.ple.ceP C "E _O.T.. musty be' placed on one of the 12 position'= gry s'zv td ic`s: poss. In a later communication dated ".due ? to,'equest of other manufacturers, it, is, aocep table to us that,O.T. be replaced on the 12 position ro.tarics by space and. the position of T.C.T. be fixed, ra`t,her than. variable -----_E' As .1 see it, this second statement can mean one of two things:-- 1. That the rotaries can e,:ch be sei? to one of eleven meaningful positions, 0 - 9 and minus ' The twelfth tag on t:~e switch will in this case have ro cor;nectior _;ade to it and when any of the switches are turned to t1-i :i ;st gsiti :-1, the equipment will. transmit ze.r~a?S =i11 tee sit intervals 2 and a one in the parity bit: 2' for that 2. That. the rotaries can ec.ci. 'o so'.: to one of L twelve meaning- ful positions, 0 -- Cl:, lain 1 (-j ,.1:'i tJ.LC.E. The twelfth tag on the switch will have c. connection to it in this case, and when any of the switches are t.,arn .d to this 1^ s t position, the equip-- ment 'will transmit a cod- moanin_; "Sr'i'-CE" in the bit int:;i sRls Approved. For Release 2002/07/10 : CIA-RDP78BO4747A000900050028-8 Approver Release 2002/07/10: CIA-RDP78BQ4 47A000900050028-8 2? - 25 and a parity bit depending on the cute for that character. The whole issue resolves itself into a matter of whether or not there is a wire connected to the twelfth tag on each of the rotaries. In the design as it stands at present I haves assumed that, the first interpretation is correct, but would prefer confiimati0fl on this point. I hope this covers it sufficiently for you to give me a definite reply. Please accept my apologies for all the trouble I have put you to. Yours sincerely, a- AL?4 c -0 STATINTL STATINTL ILLEGIB Approved For Release 2002/07/10 : CIA-RDP78BO4747A000900050028-8