Comtech EF Data SDM-650B - Manual (Page 297)

Rev. 5 G–1
Appendix G.
TROJAN INTERFACE
This appendix provides information on the Trojan interface option for the SDM-650B,
including:
• Functional description
• Connector pinouts
• Specifications
• Configuration
guidelines
• Front panel operation information
• Remote control operation information
G.1 Functional Description
The Asynchronous Dejittered MIL-STD-188-114 digital interface provides level
translation, buffering, jitter reduction, and termination between the modem internal
signals and the MIL-STD-188-114 DCE interface on the rear panel. This interface also
has the capability to handle different rates of transmit and receive data, using an internal
synthesizer to generate the respective clocks. Also included in the receive chain is a
selectable depth Doppler buffer to handle satellite delay variation.
Refer to Figure G-1 for a block diagram of this interface.
Control of interface parameters is accomplished from the front panel (refer to Chapter 4)
through the Config Interface menu. Remote control may be accomplished through the
RS-232-C/-485 port (refer to Section G.6).