User Manual

Table Of Contents
RF-Orchestra!™ Transmitter Installation and Operation System Description
July 2000 6880493G02-C 2-19
AC Distribution Panel
The AC distribution panel provides the main AC power input to the transmitter and all AC
powered modules. The panel has silicone diode surge protection and distributes 208 Vac and
120 Vac as required in the cabinet (see Figure 2-10). The panel includes two (120 V) service
outlets located on both the front and the back of the unit.
A 12-foot line cord with a NEMA L14-30P plug exits the top of the cabinet. The main circuit
breaker switch disconnects or connects AC power to all AC plugs on the panel. This breaker
switch (located on the right of the panel) must be switched off before inserting or removing
the AC plug.
The transmitter circuit breaker switch (located on the left side of the front panel) disconnects
or connects the four 240-Vac receptacles on the back of the right side. This breaker switch
connects or disconnects AC power to both RF-O! transmitter power supplies. A block diagram
displays the power distribution in the RF-O! transmitter (see Figure 2-10).
The auxiliary circuit breaker switch disconnects or connects all the 110 V duplex outlets,
except the service duplex outlets on the back and front of the AC distribution panel.
Positioning this switch to OFF powers down the optional RF-Audience! (RF-A!) receivers and
any AC powered network modules for the RF-O! Transmitter and RF-A! receiver(s).
The main circuit breaker provides the service outlets with 110-Vac power. This circuit breaker
requires resetting only after detecting a high current and popping the button out of the
breaker. In case of any tripped circuit breakers, investigate for shorted AC power or power
supply failure by stepping through the power down and start-up procedures (see Chapter 5,
"Operation").
J20-J21 DC INPUT + 28 V input from each AC power supply
J22 DC FAN POWER + 28 V input from each AC power supply
J23 RF OUT
RF output from exciter circuits for direct connection to a single PA deck
or the RF splitter with multiple PA decks
J24 RF FEEDBACK RF input from internal RF coupler at the RF output
Table 2-3: OCM Backplane Connectors
Connectors Name Description