Ross ACO-4400A, User Manual, Page: 59 / 112

ACO-4400A User Manual (Iss. 03) Front Panel Menu System • 5–5
Main Menu
Table 5.3 provides an example of the Main Menu. The Main Menu is accessed by either pressing
the escape button or the rotary control while viewing the “logo” stand-by screen.
Figure 5.3 Main Menu Example
Operational Mode
This menu line displays the current mode of operation of the ACO-4400A. The options for the
field are: Auto, Manual.
Auto
When set to Auto , fault detection is enabled, the outputs will automatically default to the Primary
inputs, and, when applicable, automatic switching of inputs occurs when a fault is encountered:
When a Primary fault is repaired, the output will automatically switch back to the Primary input
when the signal is re-connected (provided the signal conforms to that channel's configuration).
Manual
When set to Manual , fault detection is “disabled”, and the user is able to manually switch the
output to be either the Primary or Backup input, irrespective of any existing faults.
Output
This menu line displays which of the inputs is currently switched to the output. The options for
the field are: Primary, Backup. The user can only switch the output to Backup when the
“Operational Mode” is set for “Manual”.
Other Menus
The Signal Strength Menu, Channel Setup Menu, and System Setup Menu provide access to
further menus or features, all of which are detailed in the following pages.
Table 5.1 Fault Actions
Fault on Switch
No fault Primary
Primary Backup
Backup Primary
Primary & Backup Backup
Audio Type Audio =
—System —> Menu Enter
—Channel Setup —> Menu Enter
—Signal Strength —> Menu Enter
Primary Output =
Operational Mode
ACO-4400A Faults=nn
= Auto