.ut-cat{color:#333;font-family:Arial,Helvetica,sans-serif;line-height:1.5;} .ut-cat h4{color:#1a1a1a;font-size:1.15em;margin:1.5em 0 .5em;padding-bottom:.25em;border-bottom:2px solid #ccc;} .ut-cat h2{color:#1a1a1a;font-size:1.25em;margin:1.2em 0 .4em;} .ut-cat h3{color:#222;font-size:1.05em;margin:1em 0 .3em;} .ut-cat p{margin:.6em 0;} .ut-cat ul{margin:.5em 0;padding-left:1.4em;}.ut-cat li{margin:.25em 0;} .ut-cat img{max-width:100%;height:auto;} .ut-cat table{border-collapse:collapse;width:100%;margin:.5em 0;} .ut-cat th,.ut-cat td{border:1px solid #ddd;padding:6px 10px;text-align:left;vertical-align:top;} .ut-cat td strong{color:#222;} Overview The UTS3000-EMI adds EMI pre-compliance measurement — quasi-peak detectors, limit lines (CISPR, FCC, EN, MIL-STD-461, VCCI), automated scans, and pass/fail reporting. Catch failures early and save weeks of redesign. The option is enabled by a software license keyed to the spectrum analyzer's serial number and is permanent for the life of the instrument. Key Features EMI Detectors — Quasi-peak, EMI average, peak, negative peak per CISPR 16. Limit Lines — CISPR 11/22/32, FCC Part 15, EN 55011/55032, MIL-STD-461, VCCI, and more. Automated Scans — Scan-search-measure workflows — peaks identified, quasi-peak measured, results compiled automatically. Pass/Fail Reports — On-instrument compliance reports with margin analysis. Pair with UTS-EMI01 — Combine with UTS-EMI01 near-field probes to locate emission sources on PCBs. Lifetime License Activation — activate once, owned for the life of the instrument. No subscriptions, no renewals, no maintenance fees. When You Need This Option The option fits the following workflows: Pre-Compliance — Run EMI scans with FCC/CISPR limits during prototyping — find issues before the compliance lab. Failed Test Troubleshooting — Reproduce compliance failures on your bench, iterate on filter designs, measure improvements in real time. Compatibility This option is compatible with all UTS3000B/T Series spectrum analyzers. The same capability is offered on other UNI-T spectrum analyzer families: UTS1000B, UTS3000A, UTS5000A, UTS7000A. Frequently Asked Questions Is this sufficient for formal compliance? Pre-compliance screening — catches most issues early. Formal testing requires a certified lab with calibrated antennas and chambers. How is this option activated? The option is enabled by a software license keyed to the spectrum analyzer's serial number. After purchase, the license is registered on the UNI-T website to generate the license file, which is then loaded onto the spectrum analyzer from a USB drive through the option-install menu. Refer to the spectrum analyzer's user manual for the step-by-step procedure. Is the license permanent, or does it require renewal? The license is permanent — a one-time purchase that stays active for the life of the instrument. No subscriptions, no annual renewals, and no expiration. Documentation UTS3000-EMI User Manual
