3M SE-400 user manual Microphone preamp, Attaching the preamp, Connecting an extension cable

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Microphone preamp

Attaching the preamp

Microphone preamp

The removable preamplifier (model SE-402R non-IS when equipped) can be used for remote distance monitoring. An extension cable is connected between the SE-402R model and the preamplifier. (The cable may be purchased separately, see Accessories in Appendix A).

Attaching the preamp

1.Place the preamp connector over the mating connector at the top of the instrument. Gently press down while rotating the preamp until the preamp connector drops slightly in place.

2.Rotate the preamp ring until secure.

Connecting an extension cable

Optional Extension cables are available from 3M. They are typically used to make remote measurements by distancing the microphone from the instruments body.

1.To connect the microphone to the extension cable, first remove the preamp from the SE-400 and familiarize yourself with the extension cable ends.

Extension cable with connector pins (see A) connects to the top of the SE-400 .

			Extension cable pins with white molding (see B)
			connects to preamp
A	B	C	Preamp pins (aligns to extension cable pins) see C.

Figure 4-17: Example of extension cable and preamp

2.Insert the extension cable’s pins (see B above) into the preamp, noting it will snap into place when the pins are aligned correctly. Next, twist the black nut (on the preamp) counter-clockwise unit it fits securely.

3.Insert the opposite end of the extension cable to the top of the SE-400 and twist the silver ring until it is fastened down.

Figure 4-18: SE-402R with extension cable and preamp attachment (when equipped)

Sound Examiner SE-400 Series