User Manual

Table Of Contents
RF-Orchestra!™ Transmitter Installation and Operation System Description
July 2000 6880493G02-C 2-17
Figure 2-8: DC-DC Converter Block Diagram
External Connections
The following paragraphs explain the RF-O! transmitter external connections.
Serial Port
The RF-O! transmitter serial port is on the front panel for obtaining transmitter parameter and
diagnostic information using a service terminal. The serial port uses RS-232 signaling through
a DB-9 female connector.
Backplane Connectors
The RF-O! transmitter has 24 backplane connectors, providing the connections necessary for
interfacing with the RF-B! transmitter controller, power amplifier control and diagnostics, RF
feedback loop and monitoring, and DC power routing. The backplane connectors are
illustrated in Figure 2-9 and described in Table 2-3.
+5 V/8 A 40 W
Converter
5 V On LED
On/Off Switch
+14 V/3.3 A
40 W
Converter
96 Pin Connector
+28 V
DC Input from
AC Power Supply
302SRH-42
DC Input
22–30 Vdc
Class B EMI Filter
Inrush Limit
Mates to
Backplane