1.0 General Description

The Model 269, Opto Isolation Module, provides for a complete full duplex electrical isolation channel between two RS-232 devices. This isolation is an important consideration if a system uses different power sources, has noisy signals or must operate at different ground potentials.

2.0 Specifications

2.1 Interface: Conforms to EIA RS-232 and CCITT V.24.

2.2 Connectors: DB-25M and RJ12

2.3 Data Rate: 19.2 KBPS

2.4 Isolation: 4000 VAC

2.5 Power: None required, power derived from incoming data signals.

2.6 Size: 2"W x 4.1"L x 0.75"H (51mm x 104mm x 19mm)

2.7 Environment: 0° to 50° C, 5 to 95% RH (no condensation)

3.0 Operation

The Model 269 has been designed with a male DB25 connector and a RJ-12. On the DB-25 side, there is a DTE/DCE switch that allows pins 2 and 3 to be reversed. When configured as a DTE the unit will connect to a DCE device, such as a modem and when configured as a DCE the Model 269 will connect to a DTE such as a PC. The RJ-12 side is not equipped with a DTE/DCE switch. The direction and pin assignment is shown in the following figure.

4.0 Troubleshooting

The following is a list of possible problems that may arise during the installation and solutions to these problems:

1. The data being received is garbled?
a) The DTE/DCE switch is not set properly (see Sec. 3).
b) The equipment that the Model 269 is connected to does not have the communication parameters set the same.

2. No data is being received.
a) Customer equipment not connected to the Model 269.
b) The DTE/DCE switch is not set properly (see Sec. 3).
c) One or more wires between the interface converters are open.
d) Link connection exceeds RS-232 maximum specified distance.

5.0 Power

The Model 269 derives all power from the incoming data line on both sides, which must be at least -5.0V min. in the quiescent state.

6.0 Help

Assistance can be obtained by visiting our Technical Support Center.

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. These deliveries will be sent COD freight and 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.

Whether in or out of warranty a Return Material Authorization number (RMA) is necessary. Assistance can be obtained by visiting our Technical Support Center.

Document No. 0315-0288/Rev. A