Hughes 7729257 Tone Analog VME Board Card 7729257-099 SSEL Command Generator

Hughes 7729257 Tone Analog VME Board Card 7729257-099 SSEL Command Generator

The Hughes 7729257 (P/N 7729257-099) is a Tone Analog VME board card designed for use in the Hughes / SSEL (Satellite Support Equipment Laboratories) 7746600-100 Command Generator VME system. This card handles analog tone generation and processing functions within the VME-based satellite command and control equipment platform it was designed for. It mounts via standard VME bus edge connectors and interfaces with the host chassis backplane.

Specifications & What's Included

• Part Number: 7729257-099
• Assembly Number: 7729257
• Function: Tone Analog signal processing board
• Form Factor: VME card/module
• Bus Interface: VME (dual VME edge connectors, high-density gold-pin contacts visible)
• Main IC: LOGIC-branded large DIP controller/processor chip (center of board)
• Analog circuitry section: discrete components including capacitors, inductors, and op-amp ICs for tone analog signal conditioning
• Front panel tab labeled: TONE ANALOG, P/N 7729257
• Compatible with: Hughes/SSEL 7746600-100 Command Generator VME system
• Item includes: VME board card only

Applications

This card was part of the Hughes/SSEL 7746600-100 Command Generator, a VME-based satellite ground support equipment (GSE) platform used for command uplink generation and satellite control operations. VME (Versa Module Europa) was the dominant open-standard backplane bus for military, aerospace, and satellite ground control systems from the mid-1980s through the 1990s and into the 2000s, prized for its ruggedness, modularity, and availability in radiation-tolerant variants. Tone analog boards within command generator systems typically handle the generation or conditioning of audio-frequency or subcarrier tone signals used in command encoding schemes — translating digital command data into analog tone sequences for uplink transmission. Hughes and its SSEL division were significant suppliers of satellite command, control, and telemetry (C&C/TT&C) ground support equipment. Boards of this type are sought by organizations maintaining legacy Hughes/SSEL ground station hardware, as well as by satellite operators, government contractors, and defense system integrators who need spares for aging but still-operational ground systems.