PRELIMINARY NOTES ON OPERATION OF SAD MODEL 2

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78-03424A000400040005-0
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 5
• Document Creation Date: December 27, 2016
• Document Release Date: April 28, 2014
• Sequence Number: 5
• Publication Date: November 5, 1958
• Content Type: REPORT

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Declassified in Part - Sanitized Copy Approved for Release 2014/05/01 : C1A-RDP78-03424A000400040005-0
Preliminary Notes
On Operation Of
STATP
.-i--
SAD MODEL 2 444--
50
PAD
1. To wind the watch, the unit must be removed from its case. Remove the
two flush screws from the rear of the case and slide the unit out. Insert
a small screwdriver in the slotof the winding crown and wind as you would
a watch. Use a screwdriver small enough to enable you to get the "feel?
when the watch is fully wound. Do not use excessive force in winding.
2. Electrical Connections: The actuating signal is fed to the unit through
the small coaxial jack on the front panel. All other electrical connections
are made through the 14-connector socket on the front panel. Connections
should be made to the numbered terminals as shown in print C74B-032.
3. Sensitivity Control: The sensitivity of the device is controlled by a
small potentiometer mounted on the front panel. Removal of the round
plate and gasket on the front panel will expose the screwdriver slot for
adjusting the sensitivity. The sensitivity is best adjusted experimentally.
Turning the control counter clockwise reduces the sensitivity; turning the
control clockwise, increases the sensitivity. With this control in the
fnlly clockwise position, it is extremely sensitive to small pulses and
will trigger on pulses less than 50 millivolts in amplitude and as short
as 5 microseconds. Turning the control counter clockwise will reduce the
sensitivity so that pulses as great as 1 volt or more may be necessary to
trigger the unit. The unit is designed to trigger only on negative going
pulses.
Declassified in Part - Sanitized Copy Approved for Release 2014/05/01 : CIA-RDP78-03424A000400040005-0
Declassified in Part - Sanitized Copy Approved for Release 2014/05/01 : CIA-RDP78-03424A000400040005-0
4. Power Supply: The unit is designed to operate on a nominal power supply
of 6 volts direct current.
5. Running time for a cycle of operation can be set for 1-1/4, 2-1/2 or 5
minutes by adjustment of the "running time set switch." To adjust this
switch, remove unit from case and locate switch on upper printed circuit
board. Loosen the 6 screws which secure the switch plate and slide the
plate to the proper position as shown in drawing C748-032. Retighten
screws and replace in case.
6. CAUTION: The switching contacts in this unit are necessarily small.
They are capable of handling the currents for which they were designed,
but excessive currents and high voltages should be avoided in any tests
or applications of this device.
This unit should not be ?oersted above 50 degrees C because of the
germanium transistors in its circuits.
11/5/58
CR:1
Declassified in Part - Sanitized Copy Approved for Release 2014/05/01 : CIA-RDP78-03424A000400040005-0
Declassified in Part- Sanitized Copy Approved forRelease2014/05/01 :-alA-RDP78-03424A000400040005-0
I
C.
Proposed Improvements To
SAD
1. Winding mechanism can be made accessible from front panel so
that watch can be wound without removal from case if this is
necessary or desirable.
2. Plate and gasket which cover access to sensitivity control can
be replaced with a knurled cap as shown on Drawing B748-2001.
This can be made with an attached sheathed screw-driver blade
which can be used for adjusting the sensitivity control, removal
of housing assembly screws, and winding the watch.
11/14/58
CR:1
Declassified in Part - Sanitized Copy Approved for Release 2014/05/01 : CIA-RDP78-03424A000400040005-0
Declassified in Part - Sanitized Copy Approved for Release 2014/05/01 : CIA-RDP78-03424A000400040005-0
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Declassified in Part - Sanitized Copy Approved for Release 2014/05/01 : CIA-RDP78-03424A000400040005-0
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Declassified in Part -Sanitized Copy Approved for Release 2014/05/01 : CIA-RDP78-03424A000400040005-0
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