Ross ACO-4400A, User Manual, Page: 43 / 112

ACO-4400A User Manual (Iss. 03) Start-up • 3–9
Operational Configuration
There are several configuration factors that will influence the initial installation of your
ACO-4400A. The following guidelines outline a typical example.
Power
The ACO-4400A will automatically switch to the Primary inputs whenever it loses power. So,
you should connect the Backup SRG-4400 and one mains input on the ACO-4400A to the same
power source, and connect the Primary SRG-4400 (and the second mains input on the
ACO-4400A) to a second power source. In these configurations, both power connections would
have to fail before you lose control of the ACO-4400A.
Signals
You should now configure the ACO-4400A according to your requirements, namely the number
of channels to be monitored, and the signal type associated with each channel (using the
procedures detailed in the previous Initial Configuration section of this manual). When finished,
remember to exit the Menu system properly to save your settings in non-volatile memory.
When selecting the number of channels, you must always start from number 1, and continue up to
the number of signals you wish to monitor. You should set any unused channels to “No
Measurement”. If you select more active channels than you have signals connected, “Input
Missing” errors will always be reported, leading to inconsistent operation.
You can now connect your signals to the ACO-4400A rear panel BNCs ( Figure 3.1 as an
example), according to the configuration settings made in the previous paragraph. The example in
Figure 3.1 shows six channels from the list of supported signal types but does not illustrate
Molex® channels. Note that the maximum is 12 channels.
Figure 3.2 Example of ACO-4400A Connections
ACO-4400A
Primary
SRG-4400
Primary 1
Backup 1
Primary 2
Backup 2
Primary 3
Backup 3
Primary 4
Backup 4
Primary 5
Backup 5
Primary 6
Backup 6
SRG-4400