Adcom A720, A723 Device series, Understanding connectors

CHAPTER 4

Performing Advanced Functions

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 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)

V+

Gnd