Tektronix TM504 w/ 1x FG 501A , 3x DM 501A DMM

The Tektronix TM504 with FG 501A and three DM 501A modules is a modular test platform combining signal generation and precision measurement. This four-bay mainframe houses one 2 MHz function generator and three digital multimeters, enabling simultaneous waveform synthesis and multi-channel electrical parameter acquisition. The configuration delivers 0.002 Hz to 2 MHz signal generation with variable waveforms - sine, square, triangle, ramp, and pulse - plus independent measurement channels.

The high-power rightmost compartment supports demanding plug-in requirements while maintaining compact benchtop integration.

Technical Specifications

• 4 bays for TM500 Series modules


• Low power compartments: 2 × 25 VAC, 0.5 A / 25 VA per bay; floating ≤350 V peak


• High power compartment: 2 × 25 VAC, 1 A / 50 VA; floating ≤350 V peak


• Shared supplies: +11.5 V and 17.5 VAC with grounded center tap (3.6 A low power, 4 A high power) Function Generator (FG 501A)


• Frequency range: 0.002 Hz to 2 MHz


• Output amplitude: 5 mV to 20 Vp-p; 30 Vp-p open circuit; 15 Vp-p into 50 Ω


• DC offset: ±13 V open circuit


• Frequency sweep with 1000:1 VCF input ratio


• Symmetry control: 5% to 95%


• Attenuation: 60 dB maximum (20 dB steps plus variable control)

Key Features

• Five waveform types enable comprehensive signal synthesis across audio to RF test ranges


• Voltage-controlled frequency input supports automated sweep and modulation applications


• Independent 25 VAC power supplies per compartment isolate module operation


• High-power compartment accommodates higher current draw plug-ins without core supply degradation


• Front panel power control, tilt bail, and carry handle enable portable lab configuration

Typical Applications Function generation and measurement in analog circuit characterization, signal integrity testing, frequency response analysis, and multi-point system diagnostics where simultaneous generation and measurement reduce setup complexity.

Compatibility & Integration Accepts single-width TM500 Series plug-ins. Mainframe layout supports three single-width modules or one single and one double-width module. Factory customization options enable rear panel signal access and inter-compartment interconnections.