TRW F767155-1 DC Power & Command Drawer Rackmount Telemetry +5V -5.2V 9-Pin

TRW F767155-1 DC Power & Command Drawer Rackmount Telemetry +5V -5.2V 9-Pin

The TRW F767155-1 is a rackmount DC Power & Command Drawer produced by TRW's Electronics & Defense Sector. This unit provides regulated DC power outputs and command signal routing for telemetry ground support and unit-under-test (UUT) applications. It is designed to supply and control power to test articles during integration and verification testing, with dedicated front-panel controls for voltage selection, pulse commanding, and telemetry monitoring. The part number on the rear identification label reads F767155-1 (the listing was originally noted as F767155-7; the label-confirmed number is F767155-1).

Specifications & What's Included

• Manufacturer: TRW Electronics & Defense Sector
• Part Number: F767155-1
• Serial Number: 002 (internal reference)
• Form Factor: Rackmount (rack ears present)
• DC Output Voltages: +5V, -5.2V (dedicated front-panel knobs for each)
• Front Panel — Telemetry Test Points: multiple banana-jack test points arranged across top of panel (Primary and GND rows)
• Front Panel — GND Inputs: 7 Primary GND inputs, 7 Redundant GND inputs
• Front Panel — Slice Select: PRE / PASS / ZIN selector
• Front Panel — +5V Section: RUN knob and controls
• Front Panel — -5.2V Section: RUN knob and controls
• Front Panel — Pulse CMD section
• Front Panel — UUT Power section: OUT CURRENT (YES/NO), OUT (ON/OFF), and voltage test point jacks
• Front Panel — Large mil-spec circular connectors: J1, J2 (COM MUX POWER)
• Rear Panel — J101: large mil-spec circular connector (9-pin primary output)
• Rear Panel — J102: large mil-spec circular connector
• Rear Panel — J103: large mil-spec circular connector
• Rear Panel — J104: DB9 (male) connector
• Rear Panel — J105: coaxial / BNC-style connector
• Rear Panel — J106: DB9 connector
• Rear Panel — CB1: circuit breaker (toggle-style)
• Internal: visible wiring harness, terminal block arrays, and transformer assembly
• Power cord attached (visible in photos)
• Unit only — no additional accessories

Applications

The TRW DC Power & Command Drawer is a type of aerospace ground support equipment (GSE) used during the integration, test, and verification of spacecraft subsystems, launch vehicle electronics, and defense avionics. Units like this one provide the controlled DC power rails and command signal interfaces needed to power up a unit under test (UUT) in a controlled lab or clean-room environment — simulating the vehicle's electrical environment without relying on flight hardware. The telemetry test points allow engineers to monitor signal lines in real time during functional testing. The slice-select and pulse command features are characteristic of modular telemetry data systems used in satellite and launch vehicle programs from the 1980s through the 1990s, where multiple electronic slices or subsystems shared a common power and command bus. TRW's Electronics & Defense Sector was a major aerospace and defense prime contractor involved in satellite and space systems during this era — equipment from this division is most often encountered in aerospace museum collections, government surplus, legacy satellite program support, and university aerospace engineering labs maintaining heritage test infrastructure.