MIL-R-835168
4.6.13 Operate and release times (as applicable, see 3.1) (see 3.16). The operate and release times (including bounce) shall be measured using an oscilloscope. Rated voltage shall be applied to the coil. The circuit shown on figure 1, or equivalent, shall be used. For qualification inspection, timing measurements shall be made on all contact sets. For quality conformance inspection, all open contacts may be wired in series, and all closed contacts may be wired in parallel.
4.6.14 Resistance to solvents (see 3.17). Relays shall be tested in accordance with method 215 of MIL-STD-
202. The following details and exceptions shall apply:
a. Portion of the specimen to be brushed: All marking.
b. Number of specimens to be tested: A total of four; two shall be tested using the first solvent solution; and one specimen each shall be tested using the second and third solvent solutions.
c. Examination: Specimens shall be examined for legibility of marking.
4.6.15 Contact noise (when specified, see 3.1) (see 3.18). Contact noise shall be measured using the test circuit shown on figure 2. The mercury switch shall be pulsed at a rate not to exceed 5 Hz with "on" and "off" time approximately equal. The input filter bandwidth of the oscilloscope shall be set at 600 Hz to 100 kHz. An oscilloscope, such as Tektronix Inc. type 561A, with type 2A61 plug-in, or equal, shall be used, with its time scale adjusted to 2 ms per centimeter and its gain control adjusted for adequate deflection. The peak-to-peak voltage shall be determined at 10 ms. The oscilloscope trace shall be recorded using an oscilloscope record camera.
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