Ross 4500DR-204-03, Руководство пользователя

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16 • Hardware Overview ACO-4500 User Guide (v3.0)
Figure 3.2 ACO-4500 — Rear Panel Components
1. Power Connectors
The ACO-4500 is designed to operate from a single-phase power source with the neutral conductor at or near
earth ground. The line conductor is fused for over-current protection. A protective ground connection through the
grounding conductor in the power cord is essential for safe operation. Safety earth studs are also provided for
earth bonding the chassis if you so require.
The ACO-4500 operates from an AC line frequency of 48Hz to 63Hz, over the range of 85VAC to 250VAC,
without the need for user configuration. Refer to the chapter “
Technical Specifications ” on page 55 for
additional information on power and environment requirements.
You need to provide two power connections, one for each power supply. For full power security, these should be
on 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.
2. BALANCED Connectors
Three 30-pin Molex® connectors are present. These are unmonitored relay changeover channels that follow the
BNC channels. Typical signals to connect here are those not supported via the BNC channels, such as Balanced
Audio, Balanced Timecode, etc. The Molex® connectors are use for the following:
› Top connector — input for the backup SRG-4500.
› Middle connector — output of the ACO-4500.
› Bottom connector — input for the primary SRG-4500.
3. BACKUP - # - PRIMARY BNCs
Each triplet of BNCs relates to one changeover channel, comprising of a Primary input, a Backup input, and an
output.
›
BACKUP
— An input from the Backup SRG-4500 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-4500 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).
4. GPI / RS232
This rear-panel connector is a 10-pin male dual-in-line type. This allows for RS-232 communication, and GPI/O
functionality. This port is not implemented.
5. 100-Base T
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.
Warning
— To avoid the risk of electrical shock, do not operate the unit when the top cover
is removed. Dangerous high voltages are present within the unit.
GPI/RS232
100-BaseT
— 7 — BACKUP PRIMARY BACKUP
BACKUP — 2 —
— 8 — PRIMARY BACKUP — 9 — PRIMARY BACKUP — 10 — PRIMARY BACKUP — 11 — PRIMARY BACKUP — 12 — PRIMARY
BACKUP — 1 — PRIMARY PRIMARY BACKUP BACKUP BACKUP BACKUP — 3 — — 4 — — 5 — — 6 — PRIMARY PRIMARY PRIMARY PRIMARY
BALANCED
BALANCED
5 2 3
4
1 1