MED100A-0908-4/5

RS-232

1.Loosen the screws to open the Serial TB Lead Clamps for the D, A, and B terminals.

2.Insert the RS-232 Signal Leads into the TB. Refer to the diagram above for DTE and DCE wiring configurations.

3.Tighten the screws to close the Serial TB Lead Clamps. Ensure the clamps hold the leads securely. However, do not over tighten.

Installation Notes:

DIP Switch Positions 1 through 5, 7 and 8 are not used in RS- 232 Mode.

The wiring example shows a DTE device on one end and a DCE device on the other.

Handshaking signals are not passed through.

p/n 6132r3

Fiber Optic Point-to-Point

Fiber Optic Multi-drop Ring

Fiber Optic

RS-232 Loopback Test

1.Ensure your fiber optic cable is terminated with an ST type connector. 62.5/125 micro-meter multimode cable is recommended.

2.Connect the converter’s transmitter to the distant end receiver and vice-versa.

3.The fiber optic transmitter light is ON in the idle state. Therefore, the RX indicator will be lighted when data is not being transferred.

4.DIP Switch SW1-6 is used to select point-to-point or multi-drop mode. For point-to-point, set the switch to OFF for both converters. For multi-drop, set the switch to ON for each converter in the ring. With SW1-6 in the ON position, receive data will be looped back to the fiber optic transmitter. Data will repeat around the ring until it finally reaches its source. When the data is received by the originator, timeout circuitry will prevent it from being re- transmitted.

Maximum Converters in a Fiber Ring

Baud Rate

RS-232

RS-422/485

19.2 kbps and lower

32

32

38.4 kbps

16

24

115.2 kbps

2

8

1.Configure the converter for RS-232.

2.Set DIP Switch SW1-6 to OFF.

3.Cross-connect the fiber optic transmitter to the fiber optic receiver using a multimode patch cord.

4.Connect a PC to the serial port.

5.Using Hyper Terminal or similar program, connect to the appropriate COM port. Set the baud rate to match the converter. Ensure Hyper Terminal local echo is OFF.

6.Transmit data. If the same character string is returned, the test is good.

Black Box Corporation - 1000 Park Drive - Lawrence, PA 15055-1018

Tech Support and Ordering: 724-746-5500 - Fax: 724-746-0746

To contact us about Black Box products or services: info@blackbox.com

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Black Box MED100A Fiber Optic RS-232 Loopback Test, Fiber Optic Point-to-Point Fiber Optic Multi-drop Ring

MED100A, Industrial Serial to Multi-mode Fiber Optic Converter specifications

The Black Box Industrial Serial to Multi-mode Fiber Optic Converter, MED100A, is an essential device designed to bridge the gap between Serial RS-232 or RS-422/485 interfaces and multi-mode fiber optic cabling. As industries evolve, the necessity for reliable and high-performance data transmission over longer distances becomes increasingly critical. The MED100A addresses this need by providing a seamless method for converting electrical signals to optical signals, enabling robust communication across extensive networks.

One of the key features of the MED100A is its ability to extend communication distances significantly beyond the limitations of standard copper connections. While traditional copper cabling can handle distances of up to 1,200 meters, the MED100A can transmit data over multi-mode fiber optic cables for distances up to 2 kilometers. This capability makes it ideal for industrial environments, where equipment may be scattered over vast areas.

The MED100A supports multiple serial standards including RS-232, RS-422, and RS-485, making it versatile for various applications. Its auto-transceiver feature allows automatic configuration for half or full-duplex transmission, reducing the need for manual adjustments and facilitating ease of use. The device also includes baud rate settings ranging from 300 bps to 115.2 kbps, accommodating a wide variety of devices and ensuring compatibility across different systems.

In terms of durability, the MED100A is built for industrial environments. It boasts an IP30-rated metal housing, which protects it from dust and physical damage. The device operates efficiently in a temperature range of -40 to 85 degrees Celsius, making it suitable for challenging applications such as factory automation, process control, and utility monitoring.

Powering the MED100A is straightforward, as it can be powered either by an external power supply or through Power over Ethernet (PoE), providing flexibility in installation. Additionally, LED indicators for power, data transmission, and signal integrity allow for easy monitoring and troubleshooting.

In conclusion, the Black Box Industrial Serial to Multi-mode Fiber Optic Converter, MED100A, stands out for its robust performance, extensive distance capabilities, and adaptability to various serial protocols. Its rugged design and installation flexibility confirm its position as a reliable tool for modern industrial communication requirements.