YSI Data Scout Advanced - Manual (Page 21)

3.5.1 CONFIGURING THE TRANSDUCER SITE NETWORK
The Configure | Xducer Site Network menu function (or clicking the label that describes the site net parameters, just below the Query
button) opens the following window:
Figure 3.7
In this example one or more Level Scout transducers, utilizing SDI-12 protocol, are connected to communication port 1 at 19200
baud.
The Protocol should always be set to SDI-12.
The Use Brk/Mrk checkbox is normally checked. However, if a cell phone modem is used and the transducer’s Sleep Mode is disabled
(section 4.2.6), this option may be unchecked. This option was added because the Break/Mark timing sequences, that precede all SDI-
12 commands, do not get passed through VSP software (described below) and cell phone modems using the TCP/IP protocol. So,
disabling this option reduces the overhead of having to send these sequences. If you uncheck this option, you must remember to check
it again if you enable Sleep Mode again in the transducer (or Query will not work). When Sleep Mode is disabled battery consumption
will be greatly increased so the use of external power is required. This should not be a problem with a cell phone modem since the
same power source that energizes the modem itself can likely be used to also supply external excitation power to the transducer(s) on
that remote Site Network.
The PC may have several Com Ports as available choices. Any such port may be selected by clicking the arrow on the list box labeled
Port. If the computer comes originally without a serial port interface, the user must add a serial port interface card, install an external
USB serial port (and supporting driver, YSI part number 773), or install a “virtual” serial port (and VSP software), before any suitable
Port choices will appear in the Port list box. The list box is populated when Data Scout Advanced starts, so if a USB serial port was
plugged in while Data Scout Advanced was active, the user must exit Data Scout Advanced and restart it before that port can be
selected. A VSP is a software driver that provides access (using TCP/IP protocol) to a transducer connected remotely over the Internet
via a 3G cell phone modem.
Another similar list box, labeled Baud, also has several choices. The factory default of the Level Scout is 19200.
The setting of the Echo Used check box depends on the wiring of the network. If transmit and receive lines are tied together then any
transmitted character comes back on the receive line (i.e. echoes). RS-485 converter interfaces may block such echoes, though some
have a jumper option to pass echoes. If using the RS-485/RS-232 converter provided by YSI, leave this box unchecked. If unsure, try
it unchecked first. If the wrong option is selected, Data Scout Advanced will notify the user when the next Query command is issued.
YSI Incorporated Data Scout Advanced 17