User manual

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AM360a User Manual
revised 2009.02.16 for
Hardware Rev. A
Firmware Version 1.00.23
Front Panel Connections
Microphone — Accepts an 8-pin RJ-45 microphone plug on a Kenwoood KMC-27B push-
to-talk mobile radio microphone. Other microphones might work and you may construct a
suitable microphone using the pin-outs listed in Appendix A.
Front Panel Controls
Volume — The Volume control serves two functions: 1) selecting which audio line to adjust,
and 2) adjusting the audio level. Select which of the four audio lines to adjust by pushing
in the Volume knob and observing the indicator lamps on the front panel. The audio line
whose indicator is illuminated will be adjusted by turning the Volume knob. There are 16
steps in the adjustment even though the Volume knob turns continuously. The lowest level
is indicated by a red lamp, the highest level is indicated by an amber lamp, while all steps
in between these extremes are indicated by a green lamp. The button presses and the level
steps are echoed on the USB serial diagnostic port. Additionally, the resulting level settings
may be observed on the unit’s internal web page management screen.
Rear Panel
Rear Panel Indicators
LAN Port — The LAN jack has two built-in lamps: a solid green one indicating that an
electrical link has been established, the other flashing green indicating packet activity.
Rear Panel Connections
Speaker — This 3.5mm mini phone jack allows connection of an 8-Ohm speaker to provide
a simple means to get audio from the network into a small space such as a desk cubicle or
small office. The audio power output is approximately 1/2 Watt. A monaural plug is preferred
or use the tip of a stereo plug leaving the sleeve open.
Line Out — This 3.5mm mini phone jack allows connection to a line-level input of a public
address amplifier, tape recorder, digital audio recorder, or other audio device. Monaural or
stereo plugs will work properly in this port.
Line In — This 3.5mm mini phone jack allows connection of a line-level audio device, such
as a CD player, iPod, tape recorder line output, AM/FM broadcast receiver, or NOAA weather
radio receiver. Monaural or stereo plugs will work properly in this port.