MIL-R-835168
FIGURE 2. Procedure for observing contact noise on closing.
4.6.16 Thermal EMF (when specified, see 3.1) (see 3.19). Thermal EMF shall be measured on each contact which closes when the relay is energized and deenergized respectively. Rated voltage shall be used to energize
the relay. Each thermal EMF measurement shall be made for approximately 30 minutes after the relay is energized or deenergized. When the relay incorporates more than one contact pole, as many as two closed contacts may be connected in series and measured at a given time. A suitable test circuit is shown on figure 3 for two contacts in
series.
FIGURE 3. Thermal EMF test circuit.
4.6.17 Capacitance (when specified, see 3.1) (see 3.20). Relays shall be tested in accordance with method 305 of MIL-STD-202. The following details shall apply:
a. Test frequency - 1 kHz.
b. Points of measurement - Shall be as specified (see 3.1).
4.6.18 Shock (specified pulse) (see 3.21). Relays shall be tested in accordance with method 213 of MIL-STD-
202. The following details and exceptions shall apply:
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