TRIP REPORT - TIME EVENT MARKER, IN-7, 24 SEP 59

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78-03424A000500100025-0
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 3
• Document Creation Date: December 22, 2016
• Document Release Date: August 2, 2012
• Sequence Number: 25
• Publication Date: September 29, 1959
• Content Type: MEMO

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Declassified in Part - Sanitized Copy Approved for Release 2012/08/02 : CIA-RDP78-03424A000500100025-0
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Office Memorandu -
ITED STATES GOVERNMENT
To : The Files - RD-76, Task Order I
FROM :
SUBJECT:
(Trip Report - Time Event Marker, IN-71
DATE: 29 September 1959
1. On 24 September 1959 the writer. accompanied by
this
trikOC-SFS/EA, visited the
The purpose of this visit was to monitor the progress on
s . The progress was discussed with the following cognizant
personnel:
2. The subject task provides for the fabrication of 15 IN-7 time
event markers (TEM) and the development of one ruggedized IN-7 prototype
(TEM-A). Initial development of the IN-7 was accomplished under RD-76,
Task Order C. The TEM and TEM-A are miniature time code generators
controlled by a watch movement. In the TEM the watch is driven by a
manual wind negator spring which when fully wound will provide operation
for a 60-day period. In the TEM-A the match is driven by an electrically
operated solenoid which pulses the watch winding mechanism once per
minute. In this manner, operation of the unit will continue for a period
determined by the life of the external battery source. When TEM or TM-A
is electrically interrogated, a series of pulses is presented at the
output terminal. This is a binary coded time group representing the
number of lapse minutes from the time of activation. The TEM and TM-A
will be used with ElINT systems to denote the time that sample signals
are recorded.
3. The present status of the fabrication of 15 IN-74 is:
a. Two units delivered prior to this visit.
b. One unit was delivered during this visit.
c. Eight units assembled and in the process of testing.
d. One unit is in final assembly stages.
e. Three' unitsare in the sub-assembly stage ready for
final assembly.
CONFIDER IAL
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Declassified in Part - Sanitized Copy Approved for Release 2012/08/02 : CIA-RDP78-03424A000500100025-0
Declassified in Part - Sanitized Copy Approved for Release 2012/08/02 : CIA-RDP78-03424A000500100025-0
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SUBJECT: Trip Report - Time Event Marker, IN-7
The contractor explained that several of the units in the testing stage
are being retained in a sort of life-test status. The project engineers
on this task believe that the spring contacts on the calendar discs and
the sweep readout, after final adjustment, tend to return to their
original position atter a period of time, thus causing the unit to be
out of adjustment. Another condition which they believe may be giving
them trouble, or result in later trouble, is the cleaning agent used on
the calendar disc. They have used triethylchlorine which develops a
deposit of film causing high contact resistance. Presently they are
trying different cleaning agents to find a suitable replacement. To
facilitate testing of all IN-7 equipments, the contractor has developed
a breadboard device which will conduct a complete test of all IN-7 functions
in Oen minutes with direct numerical readout on an adding machine. Also,
they have built an amplifier for the Brush ink recorder to measure contact
resistance.
4. A demonstration of the engineering model of the TEM-A ruggedized
time event marker, IN-7, was presented by the contractor. Operation of
the unit during this demonstration was very good. The unit was put
through several ten-minute tests on the test setup mentioned above. The
present status of the unit was discussed. All tests have been completed
on the unit except those relating to sealing of the unit. These tests
have not been accomplished to date because of the contractor's fruitless
search for the proper desiccant package and container which will effect
.the size and design of the case for this unit. We have requested a
replaceable desiccant package with an external indication of its condition.
The only desiccant packages which the contractor has been able to locate
have all been too large and would require an increase in size of the IN-7.
The contractor has three proposals for this problem; they are:
a. Increase the size of the IN-7 to allow for the larger
410 desiccant package and fill the case with nitrogen.
b. Place the disiccant package inside the case, the
condition of which could not be determined without
opening the IN-7, and fill the case with nitrogen.
c. Leave out the desiccant package and fill the case
with nitrogen.
In all cases, the nitrogen gas is recommended as a prevention of corrosion
to mechanical parts in the unit. The problem was reviewed and it was
concluded that we would attempt to provide the contractor with information
on a email desiccant package, the condition of which could be determined
without opening the unit, from sources within our organization. If we
are unable to obtain a unit of the right size and configuration, weiwill
suggest an alternate solution to the problem. In any case we expressed
the desire not to increase the size of the TEM-A. The present size of
the TEM is 5-1/2 x 2-5/16 x 1-3/4 inches, and the size of the TM-A is
5-1/2 x 2-3/8 x 1-3/8 inches.
CONFIDENTIAL
Declassified in Part - Sanitized Copy Approved for Release 2012/08/02 : CIA-RDP78-03424A000500100025-0
Declassified in Part - Sanitized Copy Approved for Release 2012/08/02 : CIA-RDP78-03424A000500100025-0
.70?.0 11 I ItiL
SUBJECT: Trip Report, Time Event Marker - IN-7
5. The results of the tests conducted to date on the unit have
been very good. Temperature, -45?C to 75?C; shock, 35 G for 11
millisecond duration; and vibration, 40 G's, 5 to 55 cycles per second. The
specifications called for on this task are: -40?C to 700C; 15 GIs, and
10 G's respectively. At no time during this environmental testing did the
contractor subject the TM-A to its environmental limits.
6. The remainder of our discussion concerned the final report,
drawings, and the assemble and teat specification. In the final report
the contractor was instructed to refrain from referring back to the
bi-monthly reports as much as possible, and when this method was used,
to give a brief resume of the content of the reference. The contractor
was informed that the assemble and test specification and the drawings
1110 should be of sufficient detail and accuracy to allow the manufacture of
the TM-A by a group of uninitiated but competent personnel.
7. The last item discussed with the contractor was a program of
an-the-job training for two or three Agency employees to start in
approximately one month. This program would be on the time event marker,
IN-7, and the signal actuate device, CU-3, for a period of 4 to 6 weeks.
This course would consist of actual assembly, testing, and trouble-shooting
of the units along with the personnel. The contractor was agreeable 25X1
with this request, but had some reservation on the method of funding
because of previous troubles encountered on training funds. He requested
that better or improved arrangements should be worked out.
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cc: R+D Subject File
R+D Lab
SPS/EA
Monthly (2)
EP Chrono
- 3 -
,CA,64F LIIAL
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Declassified in Part - Sanitized Copy Approved for Release 2012/08/02 : CIA-RDP78-03424A000500100025-0