12 • Hardware Overview
ACO-2200 User Guide (v5.0)
Each triplet of BNCs relates to one changeover channel, comprising of a Primary input, a Backup input, and an
output.
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BACKUP
— An input from the Backup SRG-2200 is connected here. The signal applied must be the same
format as the Primary.
›
#
— The switched output from either the Primary input or the Backup input appears on the center BNC of
each triplet. Which input appears here, and when, is determined by the configuration of the unit.
›
PRIMARY
— An input from the Primary SRG-2200 is connected here. The signal can be any one of the
supported types. The signal applied must be the same format as the Backup. If the channel is configured for
“No Measurement”, almost any signal may be connected (the user must take into account, and be aware of, the
limitations of the switching relay regarding voltage, current and signal bandwidth).
2. Ethernet 100-Base T Connection
This rear-panel connector is a standard RJ45 Ethernet connector. This is used for DashBoard communication.
After installation, it may be used to upload software updates.
3. DIP Switches
Use the DIP switches to force the IP Address and Subnet Mask for the ACO-2200 to known values.
The ACO-2200 is designed to operate from an ex12VDC power source. A safety earth stud is provided
for earth bonding the chassis if you so require.
You need to provide two power connections (for the two ex12V DC Power Bricks). For full power
security, these should be separate, independent and secure power grids. However, you still gain the security of
power supply failure redundancy if you use the same power grid for both connections.
These LEDs indicate presence or absence of +12V.
