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ST-8000A/MD-1296G |
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The ST-8000A/MD-1296G is a high performance
modulator-demodulator (MODEM) that is an interface between
digital data signals and radio or wireline transmission
systems. The modulator section of the ST-8000A/MD-1296G
converts digital pulses into audio tones. The frequency of
the output tone is shifted according to the MARK or SPACE
state of the data pulses. This frequency-shift-keyed (FSK)
output signal is used to drive data transmission lines or as
an audio input to a radio transmitter. The ST-8000A/MD-1296G
demodulator section converts FSK audio tone data from a
radio receiver or wireline into digital pulses that are then
used to drive a data terminal device. The National Stock
Number of the ST-8000A/MD-1296G is 5895-01-331-6220ZS.
Modulator and demodulator parameters of the ST8000A are set
by front panel keypad entry or by using remote control
commands issued by a computer or controlling data terminal.
Microprocessor control circuitry within the
ST-8000A/MD-1296G interprets these user inputs and generates
the required control signals to the modulator and
demodulator sections of the modem. The modem may be operated
in either "full-duplex" (FDX) or "half-duplex" (HDX) modes.
The ST-8000A/MD-1296G front panel includes a 27-key keypad
for parameter entry, numerical digital displays, and LED
mode indicators. The MARK, SPACE, and CENTER frequencies are
displayed to 0.5 Hz resolution and may be set in 0.5 Hz
increments from 300 to 3000 Hz. Baud rate is displayed to
1.0 baud resolution and may be set in 1.0 baud increments
over the range of 30 to 1200 baud. LED indicators show
currently selected operating modes. Two 20-segment Bar Graph
displays show the amplitude of the MARK and SPACE signals of
both the modulator output and demodulator input audio
signals.
The ST-8000A/MD-1296G remote control input port may be used
with either an RS-232 or MIL-188 compatible terminal or
computer at data rates from 110 to 38,400 baud. Remote
control commands include HELP messages and summary output
features.
The ST-8000A/MD-1296G is housed in a rack-mountable aluminum
cabinet. The cabinet is 3.5 inches high by 19 inches wide by
18 inches deep. The modem may be operated from power line
sources of 115 VAC+/-10% or 230 VAC+/-10% at frequencies
from 47 to 440 Hz. The modem requires a total of 30 watts of
AC power.
The ST-8000A/MD-1296G meets U.S.A. (UL-1950) and European
(EN 60950) safety testing requirements and FCC(U.S.), VDE
(Germany), and BSI (United Kingdom) requirements for RFI
suppression. The design Mean-Time-Between-Failures (MTBF) of
the ST-8000A/MD-1296G is greater than 30,000 hours. The
ST-8000A/MD-1296G may be operated over the temperature range
of 0 to 50 degrees c, up to 95% humidity (non-condensing),
and up to 10,000 ft. elevation.
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Data Sheet:
ST-8000
PDF (44k)
Site Links:
DSRTTY-Win Terminal Software for Windows
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