6
ASYNC MP LINE DRIVER CARD
1. Specifications
Transmission Format
—Asynchronous
External Interface
—RS-232C/CCITT V.24 connection via DB25 female;
twisted-pair connection via RJ-11
Internal Interface
—Connection to the rack chassis (part number RM202,
RM204, RM208, or RM216) via 50-pin male card edge
Transmission Line
—4-wire, unconditioned twisted-pair, 19–26 AWG, 20 pF/ft. or
better
Data Rates
—0 to 57.6 kbps
Controls
—Carrier constantly on or controlled by RTS
Applications
—Point-to-point or multipoint
Indicators
—Bi-level LED indicators (two each) for Transmit Data, Receive Data,
Control In and Control Out; bi-level indicators (one each) for Power and Test
Diagnostics
—Local and remote analog loopback, activated by front-panel
pushbutton
Receiver Optical Isolation
—150 VAC
Surge Protection
—Silicon avalanche diodes, 600 watts RMS power dissipation @
1 ms, with response time of less than 1 pS
Operating Temperature
—32 to 122 °F (0 to 50 °C)
Humidity
—0 to 95%, noncondensing
Power Supply
—Rackmount power supply is switchable between 120 V and 240
VAC; rack chassis supplies 10 VAC to the Card, typical Card consumption is
700 mW
Fuse
—400 mA for 120 V applications; 200 mA for 240 V applications
Size
—0.95"H x 3.1"W x 5.4"D (2.4 x 7.8 x 13.7 cm)
Weight
—0.25 lb. (0.11 kg)
