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

Mainframe (TM504)
• 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.