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FEBRUARY 1998
ME522A-ST
ME522AE-ST
ME522A-SM
ME522AE-SM
V.35 FOLD—ST
V.35 FOLD—SM
V .3 5 F O L D
P W R
D R D
R T S C D T
D L B T E S T
CUSTOMER
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
SUPPORT
Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018
INFORMATION
Web site: www.blackbox.com • E-mail: info@blackbox.com
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Table of Contents
Troubleshooting
Related Manuals for Black Box V.35 FOLD-ST Series
Summary of Contents for Black Box V.35 FOLD-ST Series
- Page 1 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 SUPPORT Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018 INFORMATION Web site: www.blackbox.com • E-mail: info@blackbox.com...
- Page 2 V.35 FOLD FEDERAL COMMUNICATIONS COMMISSION INDUSTRY CANADA RADIO FREQUENCY INTERFERENCE STATEMENT This equipment generates, uses, and can radiate radio frequency energy and if not installed and used properly, that is, in strict accordance with the manufacturer’s instructions, may cause interference to radio communication. It has been tested and found to comply with the limits for a Class A computing device in accordance with the specifications in Subpart B of Part 15 of FCC Rules, which are designed to provide reasonable protection...
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Page 3: Table Of Contents
V.35 FOLD Contents Specifications ..................4 Introduction ..................6 Installation and Configuration ............7 Opening the V.35 FOLD ............7 Speed ...................7 Transmit Data Clock..............9 Carrier—Constant/Switched .............9 RTS/CTS Delay.................10 Full or Half-Duplex Operation ..........11 Final Installation Procedures ...........11 Monitoring Operation ..............12 Diagnostics and Troubleshooting ..........13 Simple Problems ...............13 Diagnostic Tests ................13... -
Page 4: Specifications
V.35 FOLD 1. Specifications Speed — 2.4 to 256 Kbps Interface — Terminal: V.35 DCE Line: Multimode fiberoptic, graded index Pins Supported — V.35: CTS, DCD, DSR, ETCA, ETCB, FG, RCA, RCB, RDA, RDB, RTS, SG, TCA, TCB, TDA, TDB Fiberoptic: TX, RX 2.3 km (1.4 miles) with 100µ, -5dB/km fiber... - Page 5 V.35 FOLD Loopback — Digital RTS/CTS Delay — 0, 11, 50, or 175 ms Protocol — Transparent 5 LEDs (TX, RX, RTS, CD, and PWR) Indicators — Diagnostics — DLB and Test Pattern Generator Operating Temperature — 32° to 122°F (0° to 50°C) Storage Temperature —...
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Page 6: Introduction
V.35 FOLD 2. Introduction The V.35 FOLD (Fiber Optic Line Two pushbuttons on the front panel Driver) provides short-haul (TST and DLB) make diagnostics synchronous data communication easy to use. over your own fiberoptic cable in a point-to-point application. You must Internal switches or jumpers use these units in pairs. -
Page 7: Installation And Configuration
V.35 FOLD 3. Installation and Configuration 3.1 Opening the V.35 FOLD S5. See Figure 2 for switch-bank locations. See Table 1 for how to set 1. Remove the screw located at the the switches. center of the bottom cover. NOTE: Off in Table 1 corresponds to Open on DIP switches S4 and S5. - Page 8 V.35 FOLD OPEN OPEN Figure 2. Circuit Board Layout for the V.35 FOLD.
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Page 9: Transmit Data Clock
V.35 FOLD 3.3 Transmit Data Clock Table 2. Clock Settings Data timing is synchronized among Data Clock Switch all connected devices in one of three ways: Recovered • Internal Clock (factory setting) • Recovered Clock Internal • External Clock External DIP switch S3 controls the selection of the clock timing. -
Page 10: Rts/Cts Delay
V.35 FOLD Warning 3.5 RTS/CTS Delay Constant Carrier Mode will work In Switched mode, you may insert a with full-duplex operation only, delay after the V.35 device raises not half-duplex. In Constant RTS. This will delay the return of Carrier mode the RTS signal is CTS from the FOLD to the V.35 constantly held high, preventing device. -
Page 11: Full Or Half-Duplex Operation
V.35 FOLD 3.6 Full or Half-Duplex Operation 3.7 Final Installation Procedures Figure 2 shows the location of • Replace the top cover. Jumper W3. This jumper allows you • Replace the screw. to select half-duplex or full-duplex operation. The factory setting is full •... -
Page 12: Monitoring Operation
V.35 FOLD 4. Monitoring Operation The front panel of the Line Driver Indicates the presence of has five status indicators (LEDs): carrier signal at the RX fiberoptic connector. Lights when the TDA/TDB circuit pair is active on the If the remote V.35 FOLD is in FOLD’s V.35 port. -
Page 13: Diagnostics And Troubleshooting
V.35 FOLD 5. Diagnostics and Troubleshooting 5.1 Simple Problems If you press the TST button on both Check for the simple problems first: the local and remote FOLDs, both Are both FOLDs receiving AC RD indicators should go off. This power? (Check the PWR LED.) Are ensures that both directions of the any there any cables that are not... -
Page 14: Troubleshooting
V.35 FOLD 5.3 Troubleshooting • Maximum Link Distance. Check the specifications to make sure Here are some problems to look for: that the fiberoptic cable you are running between the two FOLDs • Incompatible Baud Rates. has not exceeded the operating Remember that both V.35 range. -
Page 15: Fiberoptic Considerations
V.35 FOLD 6. Fiberoptic Considerations 6.1 Link Distance 6.2 Handling Fiber Optic Cable The maximum transmission distance • Treat connectors the same as is dependent on losses in the fiber a fine camera lens. lines. The typical range for data •... -
Page 16: Appendix A: V.35 Pin Assignments
V.35 FOLD Appendix A V.35 Pin Assignments Lead Flow Name DB25 Pin M-block Pin Transmitted data TX data clock Received data Remote TX clock ETCA ETCB Signal Detect Request to Send Clear to Send Signal Ground In/Out 7 or 23 Protective Ground In/Out Data Set Ready... -
Page 17: Appendix B: Tail-Circuit Applications
V.35 FOLD Appendix B Tail-Circuit Applications In a typical FOLD tail circuit, the FOLD will be connected back-to- back with another DCE device through the V.35 interface. To create a tail circuit, set both FOLDs for external clocking. Then connect them with a cable that crosses the Receive clock outputs with the external clock inputs, and omits the Transmit clock lines... - Page 18 © Copyright 1998. Black Box Corporation. All rights reserved. 1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746...
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