Section 3 – Installation

3.924Vdc Isolated Output (Option)

The Isolated 24Vdc Output is an option that provides 24 Volts DC @ 100 milliamps to power external (current loop) sensors. The output is isolated to 1000 volts from all internal voltages and ground. The output is also protected against short circuit.

The output is polarized and is marked for positive (+) and negative (-). This option is field installable.

Figure 3-16

3.10 Isolated Serial Interface (Option)

A standard DB9 Female connector is required for the RS232 to connect to an IBM PC compatible computer using a null modem cable. The RS232 interface can support cable runs up to 50 feet [16 m]. The RS485 connection is via two wire (twisted pair) cable (a DB9 Female adapter connector is required) and can support cable runs up to 4000 feet [1300 m].

The RS232 and RS485 connections are mutually exclusive and are selected using pin 1 of the DB9 connector – see right.

The interface is isolated from internal circuitry to 500 volts. The RS485 requires a 120 ohm terminating resistor if it is the last unit on the drop. All Serial Interface connections are made through the DB9 female connector. An adapter connector is included that brings out the RS485 connections to a set of screw terminals and has the terminating resistor on the board. The RS485 connection is marked A and B for duplex 2 wire connection. A is + and B is -.

If the terminating resistor is required it is necessary to open the adapter shell and insert the jumper to enable the termination.

The connections to the DB9 female connector are as follows:

DB9 PIN

CONNECTION

DIRECTION

1

Mode Select (see below)

In

2

RxD Receive Data

In

3

TxD Transmit Data

Out

4

DTR Data Terminal Ready

Out

5

Common

Out

7

RTS Request To Send

Out

8

CTS Clear to Send

In

6

RS485 A+

Bidirectional

9

RS485 B-

Bidirectional

The mode select pin (pin 1) must be left unconnected for RS232 operation or must be grounded (to pin 5) for RS485 communication. Use the provided adapter for RS485 communication

Figure 3-17 Serial I/O

Fig 3-18 RS485 Adapter

Fig 3-19 RS485 120 Ohm Jumper

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09/11/2008 REV 0.99

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Omega Speaker Systems RD8300 manual 24Vdc Isolated Output Option, Isolated Serial Interface Option
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RD8300 specifications

The Omega Speaker Systems RD8300 is a remarkable entry in the audio equipment market, designed for audiophiles and casual listeners alike who seek high-quality sound reproduction. This speaker system combines cutting-edge technologies with user-friendly features to deliver an immersive listening experience.

One of the standout characteristics of the RD8300 is its advanced driver configuration. Featuring a dual 8-inch woofers, a precision-tuned midrange driver, and a high-frequency tweeter, the RD8300 is engineered to provide a full range of frequencies with unparalleled clarity. This configuration ensures that bass notes are deep and powerful, while mid-range and treble sounds are crisp and detailed, making it suitable for a wide variety of music genres and audio formats.

Another integral technology in the RD8300 is its sophisticated crossover network. By intelligently directing frequencies to the appropriate drivers, the crossover helps to minimize distortion and enhance the overall sonic coherence of the speaker. This ensures every note is delivered with precision, allowing listeners to appreciate the nuances in their favorite tracks.

The RD8300 also boasts an impressive power handling capability, allowing it to deliver loud and dynamic sound without compromising audio quality. Its robust construction ensures minimal resonance, further enhancing sound clarity. The speaker's enclosure is crafted from high-density fiberboard, designed to reduce unwanted vibrations while maximizing audio performance.

In terms of connectivity, the RD8300 is versatile. It comes equipped with standard binding post inputs, making it compatible with a wide range of audio equipment. Additionally, it features both wired and wireless connectivity options, catering to modern listening preferences.

User convenience is another focus of the RD8300's design, with features such as adjustable feet and a user-friendly interface that allows for easy setup and adjustment. The sleek visual design of the speaker adds an aesthetic touch, making it an attractive addition to any room.

In summary, the Omega Speaker Systems RD8300 stands out as an exceptional speaker choice. With its advanced driver design, sophisticated crossover technology, impressive power handling, versatile connectivity options, and user-friendly features, it caters to those seeking a superior audio experience, making it a must-have for audio enthusiasts.
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