Click here to make tpub.com your Home Page

Page Title: D-C resistance
Back | Up | Next

Click here for thousands of PDF manuals

Google


Web
www.tpub.com

Home

   
Information Categories
.... Administration
Advancement
Aerographer
Automotive
Aviation
Construction
Diving
Draftsman
Engineering
Electronics
Food and Cooking
Logistics
Math
Medical
Music
Nuclear Fundamentals
Photography
Religion
   
   

 




img
MIL-A-21430B(OS)
3.3.2 D-C resistance.  The d-c resistances of load resistors and meter
multiplier resistors in each of the cable assemblies and test adapters
shall be within the specified tolerance when tested in accordance with
4.6.2,
3.3.3 Insulation resistance.  The cable assemblies and test adapters
shall exhibit insulation resistance between each circuit and all other
circuits and to ground (defined as unused contacts and shells of connectors,
center post of battery plugs and metal-junction box shells all jumpered
together as a common ground).  The insulation resistance shall be equal
to or greater than 500 megohms when measured as specified in 4.6.3 at a
test potential of 500  50 volts d. c. The insulation resistance test
shall be conducted after the `item to be tested has been conditioned for a
period of at least twenty-four hours at a temperature of 25  1C (77  2F),
at a relative humidity of 75  5 percent.  The test shall be performed
either with the unit still in the conditioning chamber or within one-half
hour after removal therefrom.
3.3.4 Adapter test requirements.  Each Test Adapter, Mark 21 Mod O, Mark
26 Mod O, Mark 28 Mod O, or Mark 38 Mod O, shall meet the requirements of
OS 7192, OS 7285, OS 7287 or OS 7667, respectively (see 4.6.4).
3.4 Clean-up.  Prior to and after final assembly and packaging all com-
ponents of the accessory set shall be thoroughly cleaned of loose, spattered,
or excess solder, metal chips and filings, or other such foreign matter.
-
Burns and sharp edges as well as rosin flash shall be removed, All com-
ponents shall be free of moisture, corrosion, dirt and dust at time of
packaging.
3.5 Workmanship.  The equipment, including all parts and accessories,
shall be constructed and finished in a manner to assure compliance with all
requirements of this specification.  Particular attention shall be paid to
neatness and thoroughness of soldering, plating, crimping, marking of parts
and assemblies, and freedom of parts from burrs and sharp edges.  The standard
of workmanship exhibited in any approved first article sample, subject to any
s
qualification stated in the Government notice of approval, shall determine
the requirements of the contract relative to workmanship insofar as not speci-
fically covered by applicable specifications,
4.
QUALITY ASSURANCE PROVISIONS
4.1 Responsibility for inspection.  Unless otherwise specified in the
contract or purchase order, the supplier is responsible for the performance
of all inspection requirements as specified herein.  Except as otherwise
specified in the contract or order, the supplier may use his own any other
facilities suitable for the performance of the inspection requirements speci-
fied herein, unless disapproved by the Government.  The Government reserves
the right to perform any of the inspections set forth in the specification
where such inspections are deemed necessary to assure supplies and services
conform to prescribed requirements.
5

Privacy Statement - Press Release - Copyright Information. - Contact Us