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2.0  GENERAL INFORMATION

 

Thank you for your purchase of this Patton Electronics product. This 
product has been thoroughly inspected and tested and is warranted for 
One Year parts and labor. If any questions or problems arise during 
installation or use of this product, please do not hesitate to contact 

 

Patton Electronics Technical Support

 

 at 

 

(301) 975-1007

 

.

 

2.1  FEATURES

 

• Asynchronous 

• Full or Half Duplex Operation

• Supports Data Rates to 19.2 kbps (Model 590A) or 115.2 kbps 

(Model 591A)

• 2500V RMS DTE-DCE Isolation

• Optional Power Supplied through Pin 9 on Either Side

• Powered by EIA-232 Interface

• Miniature Size

• Made in USA

 

2.2  DESCRIPTION

 

The Patton Model 590A/591A RS-232 to RS-232 Optical Isolators

 

 

offer a simple and effective way to guard your asynchronous data and 
equipment from the hazards of ground looping. Plugging directly into 
your DTE hardware, the Model 590A/591A provides 2500V RMS of DTE/
DCE isolation. The Model 590A/591A supports data rates to 19.2 kbps 
and Model 591A supports up to 115.2kbps.

The Model 590A/591A isolate four RS-232 signals. In addition to two 
data lines (TD, RD), Model 590A/591A passes one user-configurable 
control signal in each direction. That makes it perfect for applications that 
require hardware flow control. Just plug it in between DTE and DCE 
equipment—no external power is required. Standard DB-25 female con-
nectors on both sides connect to the equipment ports.

Summary of Contents for 590A

Page 1: ...L MODEL 590A and MODEL 591A RS 232 to RS 232 Optical Isolators SALES OFFICE 301 975 1000 TECHNICAL SUPPORT 301 975 1007 Part 07M59XA C Doc 055061UB Revised 7 5 01 An ISO 9001 Certified Company C E R T...

Page 2: ...TR RTS and CD DSR CTS 6 3 2 Setting the Internal Switches 7 Selecting the DTE Output Signals DTR or RTS 8 3 3 Selecting the DCE Output Signals CTS DSR or CD 9 4 0 Installation 10 A Model 590A 591A Spe...

Page 3: ...Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interfer ence when the equipment is operated in a commercial environment This equipment generates us...

Page 4: ...ner This number may be obtained from Patton Electronics Technical Service at Tel 301 975 1007 E mail support patton com URL www patton com Note Packages received without an RMA number will not be acce...

Page 5: ...re Size Made in USA 2 2 DESCRIPTION The Patton Model 590A 591A RS 232 to RS 232 Optical Isolators offer a simple and effective way to guard your asynchronous data and equipment from the hazards of gro...

Page 6: ...ignals TD pin 2 and RD pin 3 have been dedicated and cannot be changed Use two sets of DIP switches to set the control Data Signals Transmit Data TD and Receive Data RD The Transmit Data and Receive D...

Page 7: ...oard To access the PC board open the case by inserting a small flat blade screwdriver in the slot on either side of the case and twisting gently Figure 1 shows the location of the DIP switches on the...

Page 8: ...RTS Use Switches S1 1 S1 2 S2 1 and S 2 2 to connect either Data Termi nal Ready DTR pin 20 or Request to Send RTS pin 4 In the Iso lated setting the selected signal passes through Model 590A 591A iso...

Page 9: ...S Note Switches S1 6 S1 7 S1 8 S2 6 S2 7 and S2 8 are Reserved for Future Use Table 3 Connect CTS signal Pin 5 Switch Isolated Signal Setting S1 3 CTS Off S1 4 CTS Off S1 5 CTS On S2 3 CTS Off S2 4 CT...

Page 10: ...e DB 25 or if you need greater distance from the RS 232 interface use straight through cable 2 Connect the DB 25 female connector labeled DTE on the Model 590A 591A to your DCE device 3 When installed...

Page 11: ...ps Model 590A Up to 115 200 bps Model 591A A 5 ISOLATION 2500VRMS A 6 POWER SUPPLY Interface Powered Optional power supplied to pin 9 either side at 9 VDC at 10mA A 7 COMPLIANCE 89 336 EEC FCC Part 15...

Page 12: ...8 DCD Data Carrier Detect To Model 59XA 9 External Power To Model 59XA From Model 59XA Data Term Ready DTR 20 DIRECTION RS 232 Female DTE SETTING DIRECTION 1 FG Frame Ground 2 TD Transmit Data To Mode...

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