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CUSTOMER

SUPPORT

INFORMATION

Order toll-free in the U.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: [email protected]

APRIL 1996
ME525A-ST

ME525AE-ST

ME525A-SMA

ME525AE-SMA

V.35 Single Fiber Driver 256/ST

V.35 Single Fiber Driver 256/SMA

POW

ER

TD

RD

RTS

CD

Test

Modes

Remote
Normal
Local

V.35 Single Fiber Driver

1
2
3
...
»

Summary of Contents for ME525A-SMA

Page 1: ...ek 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 APRIL 1996 ME525A ST ME525AE ST ME52...

Page 2: ...S TRADEMARKS USED IN THIS MANUAL ST is a registered trademark of AT T UL is a registered trademark of Underwriters Laboratories Incorporated All applied for and registered trademarks are the property...

Page 3: ...operated 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 measu...

Page 4: ...amente con carritos o pedestales que sean recomendados por el fabricante 7 El aparato el ctrico debe ser montado a la pared o al techo s lo como sea recomendado por el fabricante 8 Servicio El usuario...

Page 5: ...camente de acuerdo a las recomendaciones del fabricante 15 En caso de existir una antena externa deber ser localizada lejos de las lineas de energia 16 El cable de corriente deber ser desconectado del...

Page 6: ...Installation 13 4 1 Single Fiber Connection 13 4 2 V 35 Connection 14 5 Operation 15 5 1 LED Status Monitors 15 5 2 Power up Synchronization 16 5 3 Loopback Test Modes 17 5 3 1 Local Loopback 17 5 3 2...

Page 7: ...RTS CTS both modes available at all times Application Point to point Typical Link Budget 8 dB with a 50 cable 12 dB with a 62 5 cable Responsivity Minimum 0 12 A w Indicators 6 LEDs TD RD RTS CTS powe...

Page 8: ...to hardware or software flow control and can be set for internal external or received recover clocking Connect optical fiber to the Driver with an ST or SMA interface The Driver s V 35 DTE interface...

Page 9: ...s Since all eight switches are externally accessible see the illustrations below there s no need to open the Driver s case for configuration Figure 3 1 The 8 switch package is located underneath the D...

Page 10: ...ol each function and the factory default settings Table 3 1 DIP switch default settings and functions Switch Number Function Factory Default Setting S1 1 Data Rate Distance Off S1 2 Data Rate Distance...

Page 11: ...e normal 1X setting and therefore doubles the maximum distance A setting of 2X supports communication distances up to 3 miles and is available at certain data rates up to 64 Kbps A setting of 1X suppo...

Page 12: ...led If DTE control is disabled the RDL test can only be initiated by the front panel switch If DTE control is not available switch S1 7 should be set to off S1 7 Setting On DTE control of RDL enabled...

Page 13: ...of the V 35 Single Fiber Driver Figure 4 1 The Driver s rear panel 4 1 Single Fiber Connection These short range modems are designed to work in pairs You will need one at each end of the single multim...

Page 14: ...wants to connect to DTE hardware such as a PC host or terminal using a straight through cable Connecting the Driver to DCE hardware such as a modem multiplexor or printer requires a null modem V 35 c...

Page 15: ...odes LED indicates that the modem is in test mode local analog or remote digital The TD and RD indicators blink red and green with data activity Red indicates a low V 35 logic level green indicates a...

Page 16: ...ered up a synchronization process must occur between the two modems before a link can be established Depending upon a number of factors this synchronization process can take as long as 60 seconds Any...

Page 17: ...with the remote Driver in this mode the synchronized connection between the two modems remains intact b Verify that the data terminal equipment is operating properly and can be used for a test If a fa...

Page 18: ...there may be a problem with the fiber communication line connecting the modems You should test the fiber line for proper connections and continuity Figure 5 2 Local and remote loopback test modes 5 4...

Page 19: ...w synchronization loss loss or break in fiber if CD does not go high within 60 seconds or 2 Test Mode switch is in the 2 Be sure the Test Mode Carrier Detect CD wrong position switch is set to NORMAL...

Page 20: ...must be in the ON hardware flow position for hardware flow control doesn t control signals to pass between work the Drivers both units must be set the same way Drivers work in 1 Incorrect DIP switch s...

Page 21: ...r Driver Female M 34 Connector V 35 Pin Number Signal A Frame Ground B SGND Signal Ground C RTS D CTS E DSR F CD H DTR L LL Local Loop M TM Test Mode N RL Remote Loop P TD R RD S TD T RD U XTC V RC W...

Page 22: ...1000 Park Drive Lawrence PA 15055 1018 724 746 5500 Fax 724 746 0746 Copyright 1996 Black Box Corporation All rights reserved...

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