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7 Physical Characteristics
Hardware interfaces
Models SE and DL
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.