Fully configured, the SDM-300A will meet or exceed all of the applicable requirements in IESS-308, 309, and 310 and is available with a full range of industry standard digital interfaces.
Maintaining Comtech EFData's excellent history of modem compatibility, the SDM-300A is a direct replacement for many Comtech EFData modems. When configured properly, the SDM-300A can be installed to communicate with or replace the following Comtech EFData modems:
All Comtech EFData redundancy switches (1:1 or M:N) can be used with the SDM-300A, making field replacement or upgrades of existing systems easy and cost effective.
Comtech EFData's SDM-300A employs Fully Accessible System Topology (FAST). This technology provides a costeffective approach to upgrading satellite modem configurations. FAST is an exclusive, industry-first feature that eliminates the need to purchase options before they are needed.
An SDM-300A base modem includes the following features:
Enhancing the SDM-300A's performance is easy. Additional features are added quickly on site, using the FAST access code purchased from Comtech EFData. To enable these features, simply enter the code at the front panel.
Base unit enhancements include:
BUILT-IN SELF TEST
Comtech EFData's unique built-in self test feature allows the SDM-300A to complete a bit error rate (BER) measurement without the use of expensive noise generators and BER test equipment. The built-in self test:
When commanded to the self test mode through the front panel or remote port, the SDM-300A disables the Tx and Rx IF ports and internally tests modulator, demodulator, and interface functions by means of a BER measurement. The BER measurement is achieved via an internal IF noise generator and BER test equipment built into the SDM-300A.