Test equipment repair · EMC and EMI

EMC and EMI Test Equipment Repair

Techmaster repairs EMC and EMI test equipment: EMI receivers, ESD simulators, surge and EFT generators, coupling and decoupling networks, and EMC antennas and probes. After repair, each instrument is calibrated before it is returned. Some immunity-generator parameters are outside our ANAB scope and are certified NIST-traceable, so tell us which parameters your test relies on.
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Which emc and emi equipment do you repair?

InstrumentDetails
EMI receiversAsk about repair
ESD simulatorsAsk about repair
Surge and EFT generatorsAsk about repair
Coupling networks, antennas and probesAsk about repair

We repair instruments from many manufacturers, including older and discontinued models where parts are available. Techmaster is an independent laboratory, not a manufacturer-authorized service center.

EMC and EMI manufacturers we know best

Techmaster has completed 4,908 EMC and EMI calibrations in the last ten years across 786 instrument lines. These are the manufacturers whose instruments we calibrate most often:

ManufacturerUnits calibrated (10 years)
Compliance West698
Desco563
Com-Power428
Rohde & Schwarz368
Solar Electronics318
Fischer Custom Communications250
Generic216

Common EMC and EMI faults we see

  • ESD simulator discharge relay wear and damaged tips, causing missed or irregular discharges.
  • Surge and EFT generator high-voltage switching faults, seen as distorted waveforms or outputs that fall short of the set level.
  • LISN and coupling network damage from overcurrent, which changes the impedance characteristic.
  • Bent antenna elements and damaged baluns after handling, which shift antenna factors.
  • EMI receiver front-end damage from overload, much like a spectrum analyzer.

How does a repair work?

Send the make, model and serial number with a description of the fault and any error codes. We diagnose the fault and send a quote with the expected timeline and warranty terms for your approval. After repair, the instrument is calibrated and returned with its certificate.

What calibration comes after the repair?

The directly relevant accredited capabilities are DC and AC high voltage (to 100 kV at Vista and 150 kV at San Antonio) and RF and microwave measurement at Vista, Santa Clara and Orlando. Several immunity-generator parameters are outside that scope and are handled as NIST-traceable work. Exact ranges and uncertainties are on our published accreditation scope.

Need to keep testing while your instrument is away? You can rent emc and emi test equipment for the repair period.

Frequently asked questions

Can you repair EMC test equipment?
Yes. Send the make, model and a description of the fault, and we reply with a quote, the expected timeline and the warranty terms.
Is every EMC instrument calibrated under ISO/IEC 17025 after repair?
No. High voltage and RF measurement are on our ANAB scope, but some immunity-generator parameters are not and are certified NIST-traceable. We tell you which applies with the quote.
Do ESD monitors and work-surface testers need checking after repair?
Yes. ESD monitors are among the EMC items we calibrate most often, and they verify the grounding that protects your products, so check them against specification before use. Send the make, model and fault for a quote.
Will a repair change my antenna's factors?
It can. Repairs to elements, baluns or connectors can shift antenna factors, so recalibrate the antenna after repair and load the new factors into your test software. Ask for the calibration with the repair quote.
Is Techmaster an authorized service center?
No. Techmaster is an independent repair and calibration laboratory, not a manufacturer-authorized service center. It repairs instruments from many manufacturers, including older models, where parts are available.
How long does a repair take, and is there a warranty?
It depends on the fault and on parts availability. We include the expected timeline and the warranty terms with the quote.

Need emc and emi equipment repaired?

Send the make, model and a description of the fault. We reply with a quote, the expected timeline and the warranty terms.

Request a repair quote