Total Interface Isolation Module

Reference Manual

0315-0268 Rev. A

 
Printed 04.09.02

Table of Contents

1.0 General Description
 
2.0 Specifications
2.1 Interface
2.2 Connectors
2.3 Isolation
2.4 Data Rate
2.5 Power
2.6 Size
2.7 Environment
 
3.0 Operation
4.0 Connector Pin Assignments
5.0 Power
6.0 Help

1.0 General Description

The Model 288 Total Interface Isolation Module supports complete full-duplex electrical isolation between two RS-232 devices and supports both asynchronous and synchronous communications.

Isolation is a critical element in maintaining data accuracy. The Model 288 achieves total electrical isolation for optical isolation applications (up to 2,000 V) through use of independent opto couplers. This protects equipment against damage from electrical surges and differences in ground current voltages. 

2.0 Specifications

2.1 Interface

The Model 288 Conforms to EIA RS-232 and CCITT V.24 specifications. Pin assignments are: Pins 2 and 3 (Transmit and Receive Data), Pins 4 and 5 (Request and Clear to Send), Pin 6 (Data Set Ready), Pin 8 (Data Carrier Detect), Pin 20 (Data Terminal Ready), Pin 22 (Ring Indicator), Pin 24 (External Clock) and Pins 15 and 17 (Transmit and Receive Clock).
 

2.2 Connectors

DTE = DB-25M; DCE = DB-25F

2.3 Isolation

2,000 V

2.4 Data Rate

0 to 115.2 kb

2.5 Power

110 VAC, 60 Hz (220 VAC, 50 Hz optional)

2.6 Size

2.25 in W x 6.75 in L x 1 in H

2.7 Environment

 0° to +50° C
5% to 95% RH (no condensation)
 
 

3.0 Operation

To operate the Model 288, connect your equipment to the proper DB-25 on the Model 288. The female DB-25 connector is a DCE port and will connect to a DTE device, such as a terminal or PC. The DB-25 male connector is a DTE port and is connected to a DCE device, such as a dial-up modem. The direction of each signal is shown in the Block Diagram that follows.
 

4.0 Connector Pin Assignments
 

5.0 Power

The Model 288 has a built-in isolated DC-to-DC converter. The 110 VAC is converted to a DC voltage used to power the DTE side of the Model 288. This DC voltage is also applied to the isolated DC-to-DC converter which is used to power the DCE side of the Model 288.
 

6.0 Help

If you require assistance, please call Bomara at (978) 452-2299, fax us at (978) 452-1169 or use our contact form.

Warranty

TELEBYTE warrants the equipment to be free from defects in material and workmanship, under normal and proper use and in its unmodified condition, for 12 months, starting on the date it is delivered for use. TELEBYTE's sole obligation under this warranty shall be to furnish parts and labor for the repair or replacement of products found by TELEBYTE to be defective in material or workmanship during the warranty period. Warranty repairs will be performed at the point of manufacture. Equipment approved for return for warranty service shall be returned F.O.B. TELEBYTE factory and will be redelivered by TELEBYTE freight prepaid, except for non-continental U.S.A. locations. Non-continental deliveries will be sent COD freight plus import/export charges.

The above warranty is in lieu of all other warranties, expressed or implied, statutory or otherwise, including any implied warranty of merchantability or fitness for a particular purpose. TELEBYTE shall not be liable for any damages sustained by reseller or any other party arising from or relating to any equipment failure, including, but not limited to consequential damages nor shall TELEBYTE have any liability for delays in replacement or repair of equipment.

Out of warranty equipment may be returned to the Greenlawn, NY customer service facility prepaid as described above. Return shipping charges will be billed to the customer. The repaired unit will have a 90-day warranty. In those cases where "NO TROUBLE" is found, a reduced charge will be billed to cover handling, testing and packaging.

Document No. 0315-0268/Rev. A
 

Model	Product Info
288