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Black Box ME540A-ST - page 1
Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500 ) FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746 Mailing address: Black Box Corporation , 1000 Park Drive, Lawrence, PA 15055-1018 Web site: www.blackbox.com • E-mail: info@blackbox.com CUSTOMER SUPPORT INFORMATION FEBRUAR Y ...
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Black Box ME540A-ST - page 2
FEDERAL COMMUNICATIONS COMMISSION AND CANADIAN DEPARTMENT OF COMMUNICATIONS RADIO FREQUENCY INTERFERENCE STATEMENTS This digital apparatus does not exceed the Class A limits for radio noise emission from digital apparatus set out in the Radio Interference Regulation of the Canadian Department of Communications. Le présent appareil numérique n’? ...
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Black Box ME540A-ST - page 3
FOM LINE DRIVER—ST AN D S M 3 Contents Chapter Page ...
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Black Box ME540A-ST - page 4
FOM LINE DRIVER—ST AND S M 4 Protocol — Speed — Maximum Distance — Operation — No. of Drops Supported — Interface — Connectors — Indicators — User Controls — Link Budget — Fiber Launch P ower — Receiver Sensitivity — Wavelength — Cable Requirements — MTBF — Relative Humidity T olerance — Operating T emperature — ...
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Black Box ME540A-ST - page 5
FOM LINE DRIVER—ST AN D S M 5 2.1 Ports 2.2 Speed and Distance Figure 2-1. The FOM Line Driver . CONNECTORS TX RX CONNECTORS TX RX DB-9 TERMINAL BLOCK W ALLMOUNT POWER SUPPL Y 2. Introduction ...
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Black Box ME540A-ST - page 6
FOM LINE DRIVER—ST AND S M 6 3.1 Network Mode NOTE There is no collision detection. Figure 3-1. All units configured in network mode. TX RX TX RX TX RX TX RX TX RX TX RX TX RX TX RX TX RX TX RX TX RX TX RX TX RX TX RX TX RX TX RX 3. Configurations Fiber Cabling 232/485/C. Loop Receiving Receiving 232/485/C. Loop Receiving Transmitting 232/485/C. ...
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Black Box ME540A-ST - page 7
FOM LINE DRIVER—ST AN D S M 7 3.2 Master/Slave Mode Figure 3-2. One unit configured as a master , all others as slaves. TX RX TX RX TX RX TX RX TX RX TX RX TX RX TX RX A B A B A B A B TX RX TX RX TX RX TX RX TX RX TX RX TX RX TX RX BA B A B BA A Fiber Cabling Master Transmitting Receiving Master Slave Slave Slave Slave Receiving Receiving Slave R ...
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Black Box ME540A-ST - page 8
FOM LINE DRIVER—ST AND S M 8 3.3 Point-to-Point Figure 3-3. P oint-to-point—Both units configured as masters. NOTE The same interface is not required on both sides. TX TERMINAL BLOCK RX TX RX RX TX RX TX TX RX RX TX TERMINAL BLOCK FIBER OPTIC CABLE DB-9 DB-9 ...
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Black Box ME540A-ST - page 9
FOM LINE DRIVER—ST AN D S M 9 4.1 Setup or S1, P osition 1—Mode Select S1, P osition 2—Master/Slave Select NOTE T o use the following switch positions appropriately, you should have a firm understanding of your network requirements. S1, P ositions 3 through 6—RS-485 Failsafe/Biased Line S1, P ositions 7 and 8—RS-485 T ermination 4. Instal ...
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Black Box ME540A-ST - page 10
FOM LINE DRIVER—ST AND S M 10 F iber optic Cable Connections Chapter 3, Configurations Section 4.2 Section 4.3 Section 4.4 4.2 RS-232 Set XW1. DB9 Pinouts DCE DTE 2—TX Data 2—RX Data 3—RX Data 3—TX Data 7—RTS Input 7—RTS Held High 4—DTR Input 4—DTR Held High 8—CTS Output 5—Signal Ground 6—DSR Held High 8—No Connect 1—CD ...
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Black Box ME540A-ST - page 11
FOM LINE DRIVER—ST AN D S M 11 4.3 RS-485 Connect the wire to the terminal block. Set S5. Set W4, W5, and W6. F or 4-wire operation: F or 2-wire operation: Set S1. T o terminate: Not terminated: RXB (+) RXA (-) TXB (+) TXA (-) KEY 0 = Open/Off 1 = Closed/On ...
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Black Box ME540A-ST - page 12
FOM LINE DRIVER—ST AND S M 12 Biased, Failsafe Operation (S1, positions 3 through 6). NOTE To use S1 positions 3 through 6 appropriately , you should have a firm understanding of your network requirements. Figure 4-1. Biased/Failsafe Operation Switches (RS-485). Data Flow TB1-4 TB1-1 TB1-2 TB1-3 +5V +5V 1K TX RX 1K 1K 1K Line Driver S1 Position 3 ...
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Black Box ME540A-ST - page 13
FOM LINE DRIVER—ST AN D S M 13 4.4 20-mA Current Loop (Point to Point) NOTE T o use the following switch positions appropriately, you should have a firm understanding of your network requirements. Connect the wire to the terminal block. Set S5. Set S2 and S3. S2—20-mA Curr ent-L oop Receive S3—20-mA Curr ent-L oop T ransmit ...
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Black Box ME540A-ST - page 14
FOM LINE DRIVER—ST AND S M 14 Figure 5-1. Circuit board with RS-232 options. + + + + + - + + + + + + B - A + B - A Rx Tx 1 2 3 4 5. Quick Setup Guide RX A X W 1 B X W 1 A S1 W3 C B A W2 TX A RX B TX B RX A TX A RX B TX B Slave Master Network 20mA RS-485 RS-232 Loopback Switch KEY 0 = Open/Off 1 = Closed/On S1 Pos. 1 = Mode Select 0 = Network Mode ...
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Black Box ME540A-ST - page 15
FOM LINE DRIVER—ST AN D S M 15 Figure 5-2. Circuit board with RS-485 options. + + + + + - + + + + + + B - A + B - A Rx Tx 1 2 3 4 RX A TX A TX B A S5 S1 W6 W5 W4 B B AC RX B Slave Master Network 20mA RS-485 RS-232 Loopback Switch RX A RX B TX A TX B KEY 0 = Open/Off 1 = Closed/On W4 and W5 Set for the AB position = 4 wire Set for the BC position ...
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Black Box ME540A-ST - page 16
FOM LINE DRIVER—ST AND S M 16 Figure 5-3. Circuit board with 20-mA current-loop options. + + + + + - + + + + + + B - A + B - A Rx Tx 1 2 3 4 RS-232 A S3 S2 S1 A B B A BC B A RX B RX A TX B TX A RX A TX A RX B TX B Slave Master Network 20mA Loopback Switch RS-232 RS-485 20-mA Terminal Block S5 set to A (20mA) XW2C = 20-mA interface S2 and S3 S2 Po ...
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Black Box ME540A-ST - page 17
FOM LINE DRIVER—ST AN D S M 17 6.1 Application Problems Do this befor e you call for technical support 6.2 Calling Your Supplier 6.3 Shipping and Packaging 6. T roubleshooting ...
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Black Box ME540A-ST - page 18
FOM LINE DRIVER—ST AND S M 18 Application Diagram forms are found on pages 19, 21, and 23. You may be asked to fax your diagram to the Technical Support department. Use scissors to remove the page. ...
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Black Box ME540A-ST - page 19
FOM LINE DRIVER—ST AN D S M 19 Local Node Remote Node XW2 XW2 XW1 XW1 W3 W3 W2 W2 S5 S5 W4 W4 W5 W5 W6 W6 S2 S2 S3 S3 S1: S1: NOTE 0 = Open or Off 1 = Closed or On NOTE 0 = Open or Off 1 = Closed or On 1 12 2 3 34 4 55 6 67 7 88 A AB B ...
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Black Box ME540A-ST - page 20
FOM LINE DRIVER—ST AND S M 20 ...
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Black Box ME540A-ST - page 21
21 Local Node Remote Node XW2 XW2 XW1 XW1 W3 W3 W2 W2 S5 S5 W4 W4 W5 W5 W6 W6 S2 S2 S3 S3 S1: S1: NOTE 0 = Open or Off 1 = Closed or On NOTE 0 = Open or Off 1 = Closed or On 1 12 2 3 34 4 55 6 67 7 88 AA BB ...
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Black Box ME540A-ST - page 22
FOM LINE DRIVER—ST AND S M 22 ...
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Black Box ME540A-ST - page 23
23 Local Node Remote Node XW2 XW2 XW1 XW1 W3 W3 W2 W2 S5 S5 W4 W4 W5 W5 W6 W6 S2 S2 S3 S3 S1: S1: NOTE 0 = Open or Off 1 = Closed or On NOTE 0 = Open or Off 1 = Closed or On 1 12 2 3 34 4 55 6 67 7 88 BB AA ...
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Black Box ME540A-ST - page 24
FOM LINE DRIVER—ST AND S M 24 ...
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Black Box ME540A-ST - page 25
FOM LINE DRIVER—ST AN D S M 25 ...
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Black Box ME540A-ST - page 26
1000 Park Drive • Lawrence, P A 15055-1018 • 724-746-5500 • Fax 724-746-0746 © Copyright 1998. Black Box Corporation. All rights reserv ed. ...
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