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CHAPTER 4
Performing Advanced Functions
22
Device series
Currently, two A720 device versions are in use: Series 1 and
Series 2. in addition, since begin of 2001, Adcon introduced also
the Series 3 model (A723). You can determine which series a
device is in any of these ways:
• The VER command (see pages 29 and 52). When the device is
connected, you can type this command to the series. With a
Series 1 device, the command returns VER 1.0 or higher,
while with a Series 2 device, the return is VER 2.0 or higher.
This is the most reliable method of determining which series
you have. To differentiate between A720 and A723 devices,
type the command TYPE, and an A723 will return the string
TYPE A723.
• The logo on the front of the device. Series 2 devices include
such wording on the logo. However, if you returned a Series 1
device for repair, it is possible that it was replaced with a
Series 2 motherboard. In such a case, you would have a
Series 2 device in Series 1 housing. Series 3 devices (A723)
are marked as such.
Understanding connectors
The addIT devices have cable attachments called connectors. The
connector type determines how the device communicates with the
sensors or the computer.
The receiver connector
The addIT A720B receiver has one 4-pin connector. Figure 6 illus-
trates this connector and Table 2 details the connections.
Figure 6. addIT Receiver Connector (Top View)
1
2
3
4
V+
BA
Gnd