Tektronix CDM250 Digital Multimeter
The Tektronix CDM250 is a handheld digital multimeter designed for general-purpose electrical testing. It features a clear LCD display, multiple measurement functions including voltage, current, resistance, and continuity, and a ruggedized case for field use. It is suitable for electronics troubleshooting, circuit testing, and basic electrical measurements.
- Model
- Tektronix CDM250
- Calibration
- Available on request
- Price
- $130
- Status
- In stock
- RFQ ref
- CDM250
This unit
The Tektronix CDM250 is a 3½-digit digital multimeter engineered for general-purpose electrical testing across DC/AC voltage, current, and resistance measurements. The instrument delivers true RMS readings with a 3½-digit LED display showing ±1999 counts, minus sign polarity indication, and overrange status via leftmost '1' display. Built-in overload protection, UL1244/CSA231/EN61010-1 certification, and a ruggedized case with locking multiposition handle ensure field durability and safety compliance.
Technical Specifications
DC Voltage: 200 mV to 500 V ranges; ±(0.5% + 1 count) accuracy; 500 VDC maximum input. AC Voltage: 200 mV to 500 V ranges; ±(1.0% + 4 counts) accuracy; 350 VRMS / 500 V (DC + peak AC) maximum; true RMS sine wave display. DC Current: 200 µA to 10 A ranges; ±(1.0% + 1 count) accuracy; 2 A fused, 10 A unfused maximum input. AC Current: 200 µA to 10 A ranges; ±(1.5% + 4 counts) accuracy; 650 V peak maximum input voltage (current to common); true RMS sine wave display. Resistance: 200 Ω to 20 MΩ ranges; ±(0.75% + 1 count) accuracy; 500 V (DC + peak AC) maximum input. Additional Functions: Diode testing. Power source: not exceeding 250 VRMS between supply conductors or either conductor and ground.Key Features
- True RMS measurement capability for AC voltage and current
- Separate 10 A unfused and V–Ω input jacks for flexible test lead configuration
- LED display with automatic polarity and overrange indication
- Multiposition locking handle enables instrument stacking
- UL and CSA safety certification
Typical Applications Electrical troubleshooting, field service, maintenance testing, and circuit verification in industrial and commercial environments.
Compatibility & Integration The ruggedized case and foldable handle design permit stacking with other instruments in the same series, optimizing portable test kit configuration.
Specifications
| Parameter | Value |
|---|---|
| Voltage / Current Range | DC Voltage: 200 mV–500 V |
| AC Voltage | 200 mV–500 V (350 VRMS) |
| DC Current | 200 µA–10 A |
| AC Current | 200 µA–10 A |
| Resistance | 200 Ω–20 MΩ |
Tektronix CDM250 — Repair & Calibration Service
Aumictech offers NIST-traceable calibration and repair for the Tektronix CDM250. Calibration covers DC voltage accuracy at all ranges, AC voltage (True RMS) accuracy at 50 Hz, 1 kHz, and 10 kHz, DC current accuracy, resistance accuracy at all decade ranges, frequency accuracy, and diode test voltage. Fluke 87V and 289 also include capacitance and temperature calibration.. All calibrations ship with a NIST-traceable certificate. Turnaround is typically 1–3 business days after receipt.
Common Tektronix CDM250 faults: blown input fuse, worn input jacks, display segment failure, relay contact wear on bench DMMs. Common faults include worn input jacks (banana socket contact wear on the mA and COM terminals), blown input fuses (especially the 440 mA HRC fuse), and display segment failures. Keithley 2000/2001/2002 bench DMMs commonly develop relay contact wear affecting resistance accuracy after extended service.
Tektronix CDM250 price
This Tektronix CDM250 is listed at $130. Calibration is available separately from $450. Contact us for volume pricing or if you need multiple units.
Tektronix CDM250 calibration cost
NIST-traceable calibration for the Tektronix CDM250 is $450 (standard — pass/fail certificate and calibration sticker) or $650 (full measured data at every test point, reference standards documented, traceability chain included). Calibration for this instrument covers DC voltage accuracy at all ranges, AC voltage (True RMS) accuracy at 50 Hz, 1 kHz, and 10 kHz, DC current accuracy, resistance accuracy at all decade ranges, frequency accuracy, and diode test voltage. Fluke 87V and 289 also include capacitance and temperature calibration.. Turnaround is 1 to 3 business days after receipt. See full calibration details →
