Black Box IC920A User Manual Download

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SEPTEMBER 1999

IC920A

Micro Async to Sync Converter

CUSTOMER SUPPORT INFORMATION

Order

toll-free

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877-877-BBOX

FREE technical support, 24 hours a day, 7 days a week: Call

724-746-5500

or fax

724-746-0746

Mail order:

Black Box Corporation

, 1000 Park Drive, Lawrence, PA 15055-1018

Web site:

www.blackbox.com

• E-mail:

[email protected]

ASYNC.

SYNC.

Micr

o Async

↔

Sync

Con

verter

Summary of Contents for IC920A

Page 1: ... S 24 hours 7 A M Monday to midnight Friday 877 877 BBOX FREE technical support 24 hours a day 7 days a week Call 724 746 5500 or fax 724 746 0746 Mail order Black Box Corporation 1000 Park Drive Lawrence PA 15055 1018 Web site www blackbox com E mail info blackbox com ASYNC SYNC Micro Async Sync Converter ...

Page 2: ...d in a commercial environment Operation of this equipment in a residential area is likely to cause interference in which case the user at his own expense will be required to take whatever measures may be necessary to correct the interference Changes or modifications not expressly approved by the party responsible for compliance could void the user s authority to operate the equipment This digital ...

Page 3: ...baño lavabo sótano mojado o cerca de una alberca etc 6 El aparato eléctrico debe ser usado únicamente con carritos o pedestales que sean recomendados por el fabricante 7 El aparato eléctrico debe ser montado a la pared o al techo sólo como sea recomendado por el fabricante 8 Servicio El usuario no debe intentar dar servicio al equipo eléctrico más allá a lo descrito en las instrucciones de operaci...

Page 4: ...n a los contactos y receptáculos donde salen del aparato 14 El equipo eléctrico debe ser limpiado únicamente de acuerdo a las recomendaciones del fabricante 15 En caso de existir una antena externa deberá ser localizada lejos de las lineas de energia 16 El cable de corriente deberá ser desconectado del cuando el equipo no sea usado por un largo periodo de tiempo 17 Cuidado debe ser tomado de tal m...

Page 5: ... 3 2 Switch Settings 10 4 Installation 12 4 1 Connecting the Asynchronous Port 12 4 2 Connecting the Synchronous Port 13 Appendix A Asynchronous Port Connections Configured as DCE 14 Appendix B Synchronous Port Connections Configured as DTE 15 Appendix C Block Diagram 17 TRADEMARKS The trademarks mentioned in this manual are the sole property of their owners ...

Page 6: ...can use the Converter in a polling environment Data Transmission Full or half duplex Connectors Async DB25 female Sync DB25 male Operating Temperature 32 to 140 F 0 to 60 C Altitude Up to 15 000 feet 4572 m Humidity Up to 95 noncondensing Power No external power required uses power from data and control signals on async side only Size 0 75 H x 2 W x 3 2 D 1 9 x 5 1 x 8 1 cm Weight 2 oz 0 06 kg ...

Page 7: ...o AC power or batteries to operate and supports data rates to 19 2 kbps Because the Converter automatically adjusts the synchronous data rate to match the asynchronous DTE s output rate no data rate strapping is necessary The Converter derives clocking externally from the clock of the synchronous DCE and imposes no limit on data block size Characters may be up to 11 bits long Measuring only 0 75 H...

Page 8: ...tandards Adapts asynchronous terminals to synchronous modems and multiplexors Allows character lengths from 8 to 11 bits Requires no AC power or batteries Data rates to 19 2 kbps Automatically adjusts synchronous data rates Miniature size Accepts external clocking Made in the USA ...

Page 9: ...ations on the PC board 3 1 Setting Internal Switches The four switches shown in Figure 3 2 allow selection of character length and extended signaling rate These switches are located internally on the Converter s PC board To access them use a small flathead screwdriver to pop open the Converter s case as shown in Figure 3 2 Configuration Switches Sync Male Connector DTE Async Female Connector DCE ...

Page 10: ...9 MICRO ASYNC TO SYNC CONVERTER Figure 3 2 Closeup of the Converter s configuration switches Figure 3 3 Opening the Converter s case with a small screwdriver OFF OFF OFF OFF ON ON ON ON ...

Page 11: ...t in combination to determine the character length for asynchronous data Table 3 1 Switch Summary Table Position Function Factory Default Switch 1 1 Character Length Off Switch 1 2 Character Length Off Switch 1 3 Signalling Rate Off 2 5 to 1 Switch 1 4 Not Used SWITCHES SW1 1 AND SW1 2 CHARACTER LENGTH Switches SW1 1 and SW1 2 are set in combination to determine the character length for asynchrono...

Page 12: ...ALING RATE ESR The setting for switch 1 3 determines the range of variability the Converter looks for in asynchronous data rates the actual variance from a given frequency level the Converter will tolerate SW1 3 Off 2 5 to 1 On 2 5 to 2 3 SWITCH SW1 4 NOT USED ...

Page 13: ...rates a typical Converter installation Figure 4 1 Typical Converter application 4 1 Connecting the Asynchronous Port The asynchronous port of the Converter is a DB25 female and is configured as DCE Therefore it wants to talk to a DTE device such as a terminal or PC You can either plug the Converter directly into the DB25 serial port of a DTE or connect it via straight through cable Async DTE Async...

Page 14: ...rt The synchronous port of the Converter is a DB25 male and is configured as DTE Therefore it wants to talk to a DCE device such as a modem or a multiplexor You can plug the Converter directly into the DB25 serial port of a DCE or connect it via straight through cable ...

Page 15: ...erter s power supply 5 CTS Clear to Send from the Converter connected straight through to synchronous port 6 DSR Data Set Ready from the Converter connected straight through to synchronous port 7 SG Signal Ground connected straight through to synchronous port 8 CD Carrier Detect from Converter connected straight through to synchronous port 9 DCV Connected straight through to synchronous port 10 DC...

Page 16: ... waits 4 bits before dropping RTS to the synchronous port this facilitates use in a polling environment 5 CTS Clear to Send from Converter connected straight through to asynchronous port 6 DSR Data Set Ready to Converter connected straight through to asynchronous port 7 SG Signal Ground connected straight through to asynchronous port 8 CD Carrier Detect to Converter connected straight through to a...

Page 17: ...e Description 17 RXC Receive clock to Converter used to synchronize data conversion from Converter to synchronous port 20 DTR Data Terminal Ready from Converter 22 RI Ring Indicator to Converter connected straight through to asynchronous port ...

Page 18: ...x C Block Diagram Figure C 1 Block Diagram Micro Async to Sync Converter Asynchronous Format ESR 2 TD 3 RD 17 RC 15 TC 4 RTS RTS 4 RTS Delay Phase Locked Loop TD 2 RD 3 Synchronous Pins 1 5 6 7 8 9 10 20 and 22 are connected straight through ...

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