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June 2015
MD940A-F
MD940A-M
Part Numbers
Fiber Driver - ST/DB25F
MD940A-F
Fiber Driver - ST/DB25M
MD940A-M
FIBER DRIVER
CUSTOMER
Order toll-free in the U.S.: 877-877-BBOX (outside U.S. call 724-746-5500)
SUPPORT
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
INFORMATION
Web site: www.blackbox.com • E-mail: info@blackbox.com
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Summary of Contents for Black Box MD940A-F
- Page 1 Order toll-free in the U.S.: 877-877-BBOX (outside U.S. call 724-746-5500) SUPPORT 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 INFORMATION Web site: www.blackbox.com • E-mail: info@blackbox.com...
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Page 2: Specifications
Specifications Power Wall-mount Power Supply, 100-240 VAC/47-63 Hz Input, 5 VDC, 1.2 Amp Output, UL/CUL Interface EIA RS-232-C; CCITT V.24, V.28; ISO 2110 Flow Control Will pass XON/XOFF only. Size 1”H x 2.7”W x 4.2”L Weight 1.4 lb. includes supply Data Rate Transparent to rates up to 76.8 kbps (high/low speed jumper) Data Format... -
Page 3: Installation
Example Power Budget and Distance Calculations Power Budget = Transmitter Output - Receiver Sensitivity Distance = Power Budget ÷ Loss/km Example: Receiver Sensitivity = -25.2 dBm Transmitter Output = -13.4 dBm Fiber cable Loss/km = 3.5 dB/km Power Budget = 11.8 dB Distance = 3.4 km Introduction The Fiber Driver converts standard RS-232 signals into fiber optic signals, which can then be transmitted over... -
Page 4: Troubleshooting
Table 3.2 - RS232 Connector (J1) Pin - Signal S1 set to DCE S1 set to DTE 2 - Transmitted Data Output Input 3 - Received Data Input Output 4 - Request To Send connected to pin 5 connected to pin 5 5 - Clear To Send connected to pin 4 connected to pin 4... - Page 5 Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites applicables aux appareils numériques de la classe A prescrites dans le Règlement sur le brouillage radioélectrique publié par le Industrie Canada. © Copyright 2015 Black Box Corporation. All rights reserved. 1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746...