Rose Electronics CrystalView Mini USB - Manual (Page 18)

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CRYSTALVIEW MINI USB INSTALLATION AND OPERATIONS MANUAL
Serial Interface - Set Up and Operation
No setting up or user adjustments are required for connecting a serial
device. The Remote unit’s serial port is wired as DTE - the same as that
on a PC. To connect a serial printer or other DTE (rather than DCE)
device to the Remote unit, you will need a Null-Modem crossover cable
between the Remote unit and the printer. Select Xon/Xoff software flow
control on the printer and PC.
A serial touch screen may be plugged directly into the Remote unit.
The extender’s serial interface transmits/receives six signals (3 signals in
each direction). Four of these signals are used for hardware
handshaking (in addition to TX & RX).
It is possible to configure the serial interface to handle up to three simple
2-wire (Tx/Rx only) serial links. To do this, you will need to construct a
custom breakout cable. Please contact Technical Support for further
information.
Audio Interface - Set Up and Operation
The audio interface is line-level and is designed to take the output from a
sound card (or other line-level) source and be connected to a set of
powered speakers at the other end of the link. Stereo audio may be
transmitted either way across the link (simultaneously). No setup is
required unless a microphone is connected to the Remote unit.
Connect the extender as follows:
• The line-level output from your sound card connects to ‘Line In’ on the
Local unit.
• Connect ‘Line Out’ on the Remote unit to a set of powered speakers.
• A microphone may be plugged into the ‘Line In’ connector on the
Remote unit.
There are two ways of setting up a microphone:
• The Local unit’s ‘Line Out’ connection should normally be wired to the
microphone input (Pink) on your sound card. The sound card should
then be set up to provide additional amplification (+17dB). This is the
preferred connection method.
• Alternatively, the Remote unit itself can provide microphone
amplification. To set this, open up the Remote unit and locate the
jumper labeled ‘MIC’ on the daughter board. Connect this jumper
across the pins. The Local unit’s ‘Line Out’ connection should then be
wired to ‘Line In’ (Blue) on your sound card.
If your microphone is already amplified, follow the second method but
DO NOT install the amplification jumper in the Remote unit.