RC BOX Model RCS-500 IET LABS

RC Box Model RCS-500 – IET Labs

Combined Resistance and Capacitance Decade Box for Versatile Testing Applications

The RC BOX Model RCS-500 IET LABS is a dual-function decade box that combines the capabilities of both resistance and capacitance substitution into a compact and efficient design. Built by merging two of IET’s trusted series—RS-200 (resistance) and CS-300 (capacitance)—the RCS-500 offers a reliable and convenient tool for electronics testing, calibration, and educational purposes.

This model is ideal for field service engineers, laboratory technicians, and educators who require a portable, all-in-one resistance and capacitance substitution solution. It provides six capacitance decades and seven resistance decades with simple and clear dial settings, allowing users to quickly dial in precise values.

The RCS-500 is constructed with durable components and housed in a compact enclosure for easy transport and bench-top use. It supports a wide range of resistance (up to nearly 10 MΩ) and capacitance (up to 99.9999 µF), making it suitable for most general-purpose testing requirements.

Features

• Combines both resistance and capacitance substitution in a single box

• Compact, lightweight design for easy portability

• Simple rotary switch operation for quick and direct settings

• Cost-effective and space-saving alternative to using two separate boxes

• Ideal for classroom demonstrations, prototyping, and lab calibration

• Durable construction and components for long-term reliability

Applications

• Substitution and simulation of resistance and capacitance in circuits

• Circuit development and prototyping

• Educational demonstrations and training labs

• Instrument calibration and troubleshooting

• Field service and maintenance work

Specifications

• Resistance range: 0 to 9,999,999 Ω

• Capacitance range: 0 to 99.9999 µF

• Resistance accuracy: ±(1% + 25 mΩ)

• Capacitance accuracy:

  • <10 µF: ±(4% + 3 pF)

  • ≥10 µF: ±7%

• Resolution:

  • Resistance: 1 Ω

  • Capacitance: 100 pF

• Decades:

  • Resistance: 7

  • Capacitance: 6

• Power rating (resistance): 0.5 W (up to 2.5 W at highest step)

• Voltage rating (capacitance): 100 V (25 V for 10–100 µF)

• Residual resistance: ≤0.39 Ω (≤0.056 Ω/decade)

• Residual capacitance: ≤42 pF (≤7 pF/decade)

• Dimensions: 18.8 x 8.4 x 6.4 cm

• Weight: 410 g (14 oz)

The RCS-500 provides an efficient and practical solution for dual-function substitution needs, offering dependable performance in both laboratory and field settings.