3M SE, DL user manual AC/DC port, Power jack, Auxiliary port

7 Physical Characteristics

Hardware interfaces

AC/DC port

Connect a cable with a standard 3.5 mm stereo plug to this jack to obtain AC and DC output signals. Users are responsible for providing their own cable.

Power jack

DC power can be delivered to the instrument through the Power jack. Power will be taken from the external source rather than the instrument’s batteries when the external source provides 8 to 16 volts DC (300ma minimum). Two optional sources for this power are available: a switching power supply connected to an AC source and DC power provided through the accessory jack of most automobiles. For the technical specifications, see “Power sources” in Appendix A. Part numbers are given under “Optional parts” in Appendix A.

Auxiliary port

Use this port to connect the SoundPro SE/DL instrument to other devices. The two types of functions, described below, are available through the terminals of this port. A pinout of the port is provided under “Auxiliary connector” on page 139.

•Digital I/O - A group of contacts within the port provides one, logic- level input and three, logic-level outputs. See “Digital Outputs/Triggering” on page 50 are information about configuring and using the triggers.

•RS-232- A group of contacts within the port supports the RS-232 protocol for communication between the instrument and other devices, such as a Global Positioning Satellite (GPS) receiver. See “GPS” on page 54 for information about configuring the port for this purpose.

Models SE and DL