Table of Contents
Advertisement
SDM-300L3 Satellite Modem
Specifications
14.13
Asynchronous Overhead Specification (Optional)
The operator can select EIA-232 or EIA-485 for both the transmit and receive
asynchronous overhead data type.
Primary Data Rates Supported
G.703
EIA-422
V.35
EIA-232
Asynchronous ESC
Maximum Data Rate
Channel Interface
Connector
Available Baud Rates
Protocol Format
EIA-232 Specification
Circuits Supported
Amplitude (RD, CTS)
Amplitude (SD, RTS)
Impedance
EIA-485 Specification
Circuits Supported
Amplitude
AUPC Specification
Target Power Levels
Target Eb/N0 Level
Tracking Rate
Local and Remote Carrier Loss Setting
(local has priority)
AUPC Test Modes
1544 kbps SD, RD
2048 kbps SD, RD
9.6 kbps to 2.048 Mbps
9.6 kbps to 2.048 Mbps
9.6 kbps to 120 kbps
1.875% of primary data rate
EIA-232
2-wire EIA-485 half-duplex / 4-wire EIA-485 full-duplex
25-pin D on breakout panel (UB-300)
110, 150, 300, 600, 1200, 2400, 4800, 9600, 19200, 38400 bit/s
5, 6, 7, or 8 data bits
Even, odd, or no parity
1 or 2 stop bits
SD, RD (RTS, CTS connected by break-out panel)
0 / Space / ON (True): 10V, ± 5V
1 / Mark / OFF (False): -10V, ± 5V
0 / Space / ON (True): Minimum +1V
1 / Mark / OFF (False): Maximum -11V
5000, ± 2000Ω < 2500 pF
SD, RD (differential pair)
-7 to +12V from either A or B terminals to ground
Mark (logic 1): A is negative with respect to B
Space (logic 0): A is positive with respect to B
1.5 to 5V differential between A and B terminals
-5 to -30 dBm (+5 to -20 dBm for high power option)
3.2 to 16.0 dB in 0.1 dB steps
0.5 to 6.0 dB/min in 0.5 dB/min steps
Maximum - go to highest power output level
Nominal - go to preprogrammed output level
Hold - no action
2047 test pattern for remote BER monitoring
Remote baseband loopback test
14–34
Revision 0
MN/SDM300L3.IOM
Advertisement
Table of Contents
