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Resumen del manual
724-746-5500 blackbox.com TECH SPECS Cable Equalizer — Fixed transmitter and receiver cable equalizer, selectable Carrier Control — Constant or switched (DIP-switch-selectable) Carrier Loss Recovery — Built-in train on data (typically < 10 seconds) Data Format — 8 or 9 data bits with 1 or more stop bits Equalizer — Automatic, adaptive Line Requirement — Telco voice band 4- or 2-wire leased line private metallic circuits (26 to 19 AWG) Modulation — Fast Poll Mode: Proprietary; Bell 202T Mode; FSK Operation — 2-wire half-duplex or 4-wire full duplex Receiver Dynamic Range — +3 to -30 dBm or -10 to -43 dBm (DIP-switch- selectable) Speed — Fast Poll Mode: 9600 or 4800 bps asynchronous; Bell 202T Mode: 0 to 1800 bps asynchronous; Bell 202T Mode: 8, 33, 59, 219 ms Surge Protection — Up to 15 kV Training Time — RTS to CTS delay: Fast Poll Mode: 23 ms User Controls — (1) Test push button for local analog loopback, local digital loopback, or remote digital loopback; (2) 8-position DIP switches (SW1 and SW2) and (1) 10-position DIP switch (SW3) Connectors — Leased line: (1) 4-position screw terminal; DTE: (1) DB25 F (RS-232); Power: (1) 3-position terminal block Indicators — (9) LEDs for status monitoring: Power (PWR), Request to Send (RTS), Clear to Send (CTS), Transmit Data (TXD), Receive Data (RXD), Carrier Detect (CD), Modem Ready (MR), Analog Loopback (ALB), Digital Loopback (DLB) Temperature Tolerance — MD1980A, MD1980A-DC: -40 to +185.F (-40 to +85.C); MD1980C in Modem Rack II: Operating: 32 to 114.F (0 to 45.C); Storage: -40 to +176.F (-40 to +80.C) Humidity Tolerance — MD1980A, MD1980A-DC: 5 to 95%, noncondensing; MD1980C in Modem Rack II: Up to 95%, noncondensing Power — MD1980A: 85–265 VAC, 50–60 Hz, autosensing or 85–400 VDC with power cord modification; MD1980A-DC: 10–53 VDC; MD1980C: From the Modem Rack II (RM421A) chassis Size — MD1980A, MD1980A-DC: 1.5"H x 5.7"W x 8.3"D (3.8 x 14.5 x 21.1 cm); MD1980C: 6.25"H x 9"W x 0.9"D (15.9 x 22.9 x 2.3 cm) Weight — MD1980A, MD1980A-DC: 1.9 lb. (0.9 kg); MD1980C: 0.5 lb. (0.2 kg) Item Code 9600 FP Modem Standalone AC MD1980A DC MD1980A-DC Rackmount Card MD1980C To rackmount your MD1980C, order… Modem Rack II RM421A Recognize any of these situations? • You wait more than 30 minutes to get through to a vendor’s tech support. • The so-called “tech” can’t help you or gives you the wrong answer. • You don’t have a purchase order number and the tech refuses to help you. • It’s 9 p. m. and you need help, but your vendor’s tech support line is closed. According to a survey by Data Communications magazine, 90% of network managers surveyed say that getting the technical support they need is extremely important when choosing a vendor. But even though network managers pay anywhere from 10 to 20% of their overall purchase price for a basic service and support contract, the technical support and service they receive falls far short of their expectations—and certainly isn’t worth what they paid. At Black Box, we guarantee the best value and the best support. You can even consult our Technical Support Experts before you buy if you need help selecting just the right component for your application. Don’t waste time and money—call Black Box today. Why Buy From Black Box? Exceptional Value. Exceptional Tech Support. Period. MD1980A 9/13/2007 #10683 in a standard 19" (48.3-cm) rack. It’s 7" (17.8 cm) high and 10" (25.4 cm) deep. In back, the rack has 16 DB25 female connectors and 16 telco connectors. Because the rack‘s front panel is hinged, you can add and remove cards from the front of the unit without disturbing the DTE and line connections at the rear of the rack. The front panel is also translucent, so you can easily view the LEDs on the front of the cards. To access a card’s test push button to perform loopbacks, just lower the front panel. When you order a modem, you’ll receive the Standalone or Rackmount Card 9600 FP Modem, a leased-line cable, and a user‘s guide. The MD1980A-DC also includes a shielded DC power cable. With the rack (RM421A), you get a 115-VAC, 60-Hz power supply module; a -48 VDC module is available by special order. 724-746-5500 blackbox.com TECH SPECS Cable Equalizer — Fixed transmitter and receiver cable equalizer, selectable Carrier Control — Constant or switched (DIP-switch-selectable) Carrier Loss Recovery — Built-in train on data (typically < 10 seconds) Data Format — 8 or 9 data bits with 1 or more stop bits Equalizer — Automatic, adaptive Line Requirement — Telco voice band 4- or 2-wire leased line private metallic circuits (26 to 19 AWG) Modulation — Fast Poll Mode: Proprietary; Bell 202T Mode; FSK Operation — 2-wire half-duplex or 4-wire full duplex Receiver Dynamic Range — +3 to -30 dBm or -10 to -43 dBm (DIP-switch- selectable) Speed — Fast Poll Mode: 9600 or 4800 bps asynchronous; Bell 202T Mode: 0 to 1800 bps asynchronous; Bell 202T Mode: 8, 33, 59, 219 ms Surge Protection — Up to 15 kV Training Time — RTS to CTS delay: Fast Poll Mode: 23 ms U...
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