Tektronix TM5000 Power Module

The Tektronix TM5000 Power Module is the foundational power distribution component for the TM5000 series modular test and measurement mainframes. It supplies regulated and filtered DC voltages along with AC power to multiple plug-in modules, enabling reliable operation of complex integrated measurement systems. The module integrates primary and secondary power circuits, voltage selection, and dedicated regulation circuitry to support both standard and high-power measurement applications.

– Technical Specifications

Power Input
• Line voltage: 100, 110, 120, 200, 220, or 240 Vac (selectable via internal jumper or rear panel; 240 Vac range not to exceed 250 Vac)
• Line frequency: 48 Hz to 440 Hz (select models); 48 Hz to 66 Hz (TM504, TM506, RTM506, TM515 configurations)

Output Power Supplies
• Two independent floating secondary windings: 25 VAC at 0.5 A each (standard compartments)
• Regulated output: +11.5 V (derived from 17.5 VAC secondary)
• Filtered DC outputs: +33.5 V and −33.5 V
• High-power compartment supplies: 17.5 VAC and 11.5 VDC sections at higher current (4 A shared example); 25 VAC windings rated up to 1 A each

Series-Pass Regulation
• Two uncommitted transistors per plug-in bay (one NPN, one PNP); heatsink-mounted
• Power dissipation rating: 7.5 W each transistor

– Key Features

• Accommodates up to six single-width plug-in modules (TM5006/TM5006A mainframes)
• TM500 series modules compatible with TM5000 power bays; TM5000 modules require TM5000-class mainframes
• Dual-voltage secondary winding architecture provides independent floating supplies for isolation
• Uncommitted series-pass transistor stages enable custom voltage regulation in plug-in designs
• Selectable line voltage via jumper or rear panel adjustment

– Compatibility & Integration

The TM5000 Power Module works across the TM5000 mainframe family—TM502A (2-slot), TM5003 (3-slot), TM5006/TM5006A (6-slot), and TM515 Traveler (5-slot, portable). IEEE-488 (GPIB) interfaces available on many models for programmable module control. Rear panel connectors on select models provide duplicate signal and control lines, enabling custom inter-module and external device interconnections.