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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
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 +185ºF
(-40 to +85ºC);
MD1980C in Modem Rack II: Operating: 32 to 114ºF (0 to 45ºC);
Storage: -40 to +176ºF (-40 to +80ºC)
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