{"id":194823,"date":"2026-06-02T16:45:46","date_gmt":"2026-06-02T09:45:46","guid":{"rendered":"https:\/\/techmaster.com.vn\/calibration\/electrical-calibration\/"},"modified":"2026-06-02T17:38:52","modified_gmt":"2026-06-02T10:38:52","slug":"electrical-calibration","status":"publish","type":"page","link":"https:\/\/techmaster.com.vn\/en\/calibration\/electrical-calibration\/","title":{"rendered":"Electrical &#038; Electromagnetic Calibration (DC\/LF)"},"content":{"rendered":"<style>\n  :root{\n    --navy:#123E78;--blue:#1B55A6;--blue-d:#15457F;--accent:#1B55A6;--ink:#16202E;\n    --muted:#5B6776;--line:#E5EAF0;--bg:#F5F8FC;--white:#fff;--gold:#F4A623;--green:#1E8E5A;\n    --radius:14px;--shadow:0 10px 30px rgba(11,47,94,.08);--shadow-s:0 4px 14px rgba(11,47,94,.07);--maxw:1180px;\n  }\n  *{box-sizing:border-box}\n  html{scroll-behavior:smooth}\n  body{margin:0;font-family:'Be Vietnam Pro',system-ui,Segoe 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rgba(27,85,166,.34) 100%),\n      url('https:\/\/techmaster.com.vn\/wp-content\/uploads\/2026\/02\/techmaster-building.jpg') center\/cover fixed no-repeat;background-color:#0E3470}\n  .imgbanner-inner{max-width:680px}\n  .imgbanner .eyebrow{color:#BFD9F7}\n  .imgbanner h2{color:#fff;text-align:left;font-size:clamp(24px,3vw,34px);margin-bottom:14px}\n  .imgbanner p{color:#e7eef9;font-size:17px;margin-bottom:26px}\n  @media (max-width:768px){.imgbanner{background-attachment:scroll;padding:60px 0}}\n  .faq{background:var(--bg)}\n  .faq-list{max-width:880px;margin:30px auto 0;display:flex;flex-direction:column;gap:12px}\n  details.q{background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow-s);overflow:hidden}\n  details.q summary{list-style:none;cursor:pointer;padding:18px 22px;font-weight:600;color:var(--navy);font-size:16.5px;display:flex;justify-content:space-between;gap:16px;align-items:center}\n  details.q summary::-webkit-details-marker{display:none}\n  details.q summary .pm{flex:none;width:24px;height:24px;border-radius:50%;background:#eef4fc;color:var(--blue);display:flex;align-items:center;justify-content:center;font-weight:700;transition:.2s}\n  details.q[open] summary .pm{background:var(--blue);color:#fff;transform:rotate(45deg)}\n  details.q .a{padding:0 22px 20px;color:var(--muted);font-size:15px}\n  .ctaband{background:linear-gradient(115deg,#15457F,#1B55A6);color:#fff;padding:54px 0}\n  .ctaband-inner{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}\n  .ctaband h2{color:#fff;margin:0 0 6px;font-size:26px;text-align:left}\n  .ctaband p{margin:0;color:#dbe7f6}\n  @media (max-width:980px){\n    .hero .wrap{grid-template-columns:1fr;gap:30px;padding:72px 20px 60px}\n    .trust .wrap{grid-template-columns:1fr 1fr}\n    .domains{grid-template-columns:1fr 1fr}\n    .chips{grid-template-columns:1fr 1fr}\n    .why-grid{grid-template-columns:1fr}\n  }\n  @media (max-width:560px){\n    .trust .wrap{grid-template-columns:1fr 1fr}\n    .domains{grid-template-columns:1fr 1fr}\n    .chips{grid-template-columns:1fr}\n    .ctaband{padding:36px 0}\n    .ctaband-inner{flex-direction:column;align-items:flex-start}\n  }\n<\/style>\n<p><!--\n  ===== TECHMASTER \u2014 CALIBRATION DISCIPLINE PAGE =====\n  Discipline : Electrical & Electromagnetic\n  Language   : English (EN)\n  Slug       : https:\/\/techmaster.com.vn\/en\/electrical-calibration\/\n  Alt (other): https:\/\/techmaster.com.vn\/hieu-chuan\/dien-dien-tu-truong\/\n  SEO Title  : Electrical Calibration (DMM, scopes) | Techmaster\n  Meta desc  : ISO\/IEC 17025 electrical calibration \u2014 multimeters, DC sources, oscilloscopes, clamp meters, safety testers. ANAB & ILAC-MRA recognized. On-site nationwide.\n  Focus KW   : electrical calibration, multimeter calibration, DMM calibration, oscilloscope calibration, clamp meter calibration\n\n  HOW TO PUBLISH IN WORDPRESS (header\/nav & footer untouched):\n   1. Create the page at the slug above, parent = Calibration.\n   2. Paste everything inside <body> (the \n\n<section> blocks) into the page BODY\n      (Code editor or a Custom HTML block). The scoped \n\n<style> block may be pasted\n      at the top of the body or moved to the theme\/Customizer Additional CSS.\n   3. Paste the JSON-LD <script> (bottom of file) via a header-script plugin or a\n      Custom HTML block. Validate at https:\/\/validator.schema.org\/ then purge cache.\n   4. Set Yoast SEO Title & Meta description to the values above; set the WPML\n      translation link to the Alt (other-language) page for hreflang.\n  --><\/p>\n<p><!-- ====== HERO ====== --><\/p>\n<section class=\"hero\">\n<div class=\"wrap\">\n<div>\n      <span class=\"badge-iso\">\ud83d\udee1\ufe0f ISO\/IEC 17025:2017 \u00b7 ANAB (USA) \u00b7 ILAC-MRA<\/span><\/p>\n<h1>Electrical &#038; Electromagnetic Calibration (DC\/LF)<\/h1>\n<p class=\"sub\">Techmaster provides ISO\/IEC 17025:2017 accredited <strong>Electrical &#038; Electromagnetic<\/strong> calibration \u2014 accredited by ANAB (USA), traceable to the SI and recognized worldwide through <strong>ILAC-MRA<\/strong>. On-site service nationwide.<\/p>\n<div class=\"cta-row\">\n        <a class=\"btn btn-primary\" href=\"#lien-he\">Get a calibration quote \u2192<\/a>\n        <a class=\"btn btn-ghost\" href=\"#scope\">See calibration scope<\/a>\n      <\/div>\n<\/p><\/div>\n<div class=\"hero-card\">\n<h3>\u2713 Our calibration commitments<\/h3>\n<ul>\n<li><svg viewBox=\"0 0 24 24\" aria-hidden=\"true\"><path d=\"M20 6L9 17l-5-5\"\/><\/svg>ISO\/IEC 17025 certificates with legal standing &amp; global recognition<\/li>\n<li><svg viewBox=\"0 0 24 24\" aria-hidden=\"true\"><path d=\"M20 6L9 17l-5-5\"\/><\/svg>Measurement traceability to the SI International System of Units<\/li>\n<li><svg viewBox=\"0 0 24 24\" aria-hidden=\"true\"><path d=\"M20 6L9 17l-5-5\"\/><\/svg>On-site calibration at your facility, minimizing production downtime<\/li>\n<li><svg viewBox=\"0 0 24 24\" aria-hidden=\"true\"><path d=\"M20 6L9 17l-5-5\"\/><\/svg>Look up &amp; download E-Certificates online 24\/7<\/li>\n<\/ul><\/div>\n<\/p><\/div>\n<\/section>\n<p><!-- ====== TRUST STRIP ====== --><\/p>\n<section class=\"trust\">\n<div class=\"wrap\">\n<div class=\"item\">\n<div class=\"n\">17025<\/div>\n<div class=\"t\">ISO\/IEC 17025:2017 accredited lab<\/div>\n<\/div>\n<div class=\"item\">\n<div class=\"n\">ANAB<\/div>\n<div class=\"t\">Accredited by a US body<\/div>\n<\/div>\n<div class=\"item\">\n<div class=\"n\">ILAC-MRA<\/div>\n<div class=\"t\">Globally recognized certificates<\/div>\n<\/div>\n<div class=\"item\">\n<div class=\"n\">12<\/div>\n<div class=\"t\">Metrology disciplines calibrated<\/div>\n<\/div>\n<\/div>\n<\/section>\n<p><!-- ====== BREADCRUMB ====== --><\/p>\n<nav class=\"crumbs\" aria-label=\"Breadcrumb\">\n<div class=\"wrap\">\n    <a href=\"https:\/\/techmaster.com.vn\/en\/\">Home<\/a><span class=\"sep\">\/<\/span>\n    <a href=\"https:\/\/techmaster.com.vn\/en\/calibration\/\">Calibration<\/a><span class=\"sep\">\/<\/span>\n    <span>Electrical &#038; Electromagnetic<\/span>\n  <\/div>\n<\/nav>\n<p><!-- ====== INTRO (AEO) ====== --><\/p>\n<section class=\"section\">\n<div class=\"wrap\">\n    <span class=\"eyebrow\" style=\"display:block;text-align:center\">Calibration discipline<\/span><\/p>\n<h2 class=\"section-title\">What is Electrical &#038; Electromagnetic calibration?<\/h2>\n<div class=\"answer-box\"><span class=\"tag\">Quick answer<\/span><\/p>\n<p><strong>Electrical &amp; electromagnetic calibration (DC\/AC low frequency)<\/strong> determines the error of instruments that measure &amp; source electrical quantities: voltage, current, resistance, capacitance, frequency, power. Techmaster&#8217;s ISO\/IEC 17025:2017 lab is traceable to the volt (V) and ohm (\u03a9).<\/p>\n<\/div>\n<div class=\"prose\">\n<p>Electrical instruments are the backbone of electronics test, EMS, energy and electrical safety. Drifting DMMs, sources and scopes corrupt every downstream measurement \u2014 causing scrap, wrong assessments and safety risk.<\/p>\n<p>Techmaster calibrates electrical instruments with high-accuracy multifunction calibrators, traceable to the SI volt and ohm; well suited to electronics, semiconductor plants and labs.<\/p>\n<\/div><\/div>\n<\/section>\n<p><!-- ====== SCOPE \/ PARAMETERS ====== --><\/p>\n<section class=\"section\" id=\"scope\" style=\"background:var(--bg)\">\n<div class=\"wrap\">\n    <span class=\"eyebrow\" style=\"display:block;text-align:center\">Calibration scope<\/span><\/p>\n<h2 class=\"section-title\">Quantities &amp; parameters we calibrate<\/h2>\n<div class=\"chips\">\n<div class=\"chip\"><svg viewBox=\"0 0 24 24\" aria-hidden=\"true\"><path d=\"M20 6L9 17l-5-5\"\/><\/svg><span>DC &amp; AC voltage (DCV\/ACV)<\/span><\/div>\n<div class=\"chip\"><svg viewBox=\"0 0 24 24\" aria-hidden=\"true\"><path d=\"M20 6L9 17l-5-5\"\/><\/svg><span>DC &amp; AC current (DCI\/ACI)<\/span><\/div>\n<div class=\"chip\"><svg viewBox=\"0 0 24 24\" aria-hidden=\"true\"><path d=\"M20 6L9 17l-5-5\"\/><\/svg><span>Resistance<\/span><\/div>\n<div class=\"chip\"><svg viewBox=\"0 0 24 24\" aria-hidden=\"true\"><path d=\"M20 6L9 17l-5-5\"\/><\/svg><span>Capacitance, frequency (LF)<\/span><\/div>\n<div class=\"chip\"><svg viewBox=\"0 0 24 24\" aria-hidden=\"true\"><path d=\"M20 6L9 17l-5-5\"\/><\/svg><span>Electrical power &amp; energy<\/span><\/div>\n<div class=\"chip\"><svg viewBox=\"0 0 24 24\" aria-hidden=\"true\"><path d=\"M20 6L9 17l-5-5\"\/><\/svg><span>Insulation \/ earth resistance<\/span><\/div>\n<\/div><\/div>\n<\/section>\n<p><!-- ====== INSTRUMENTS ====== --><\/p>\n<section class=\"section\">\n<div class=\"wrap\">\n    <span class=\"eyebrow\" style=\"display:block;text-align:center\">Instruments<\/span><\/p>\n<h2 class=\"section-title\">Instruments Techmaster calibrates<\/h2>\n<div class=\"domains\" style=\"margin-top:30px\">\n<div class=\"domain\">\n<div class=\"ic\">\u26a1<\/div>\n<div><b>Multimeters (handheld\/bench DMM)<\/b><\/div>\n<\/div>\n<div class=\"domain\">\n<div class=\"ic\">\u26a1<\/div>\n<div><b>DC &amp; programmable power supplies<\/b><\/div>\n<\/div>\n<div class=\"domain\">\n<div class=\"ic\">\u26a1<\/div>\n<div><b>Oscilloscopes<\/b><\/div>\n<\/div>\n<div class=\"domain\">\n<div class=\"ic\">\u26a1<\/div>\n<div><b>Function \/ pulse generators<\/b><\/div>\n<\/div>\n<div class=\"domain\">\n<div class=\"ic\">\u26a1<\/div>\n<div><b>Clamp meters<\/b><\/div>\n<\/div>\n<div class=\"domain\">\n<div class=\"ic\">\u26a1<\/div>\n<div><b>Insulation &amp; earth resistance testers<\/b><\/div>\n<\/div>\n<div class=\"domain\">\n<div class=\"ic\">\u26a1<\/div>\n<div><b>Electrical safety (hipot) testers<\/b><\/div>\n<\/div>\n<div class=\"domain\">\n<div class=\"ic\">\u26a1<\/div>\n<div><b>Electrical data loggers<\/b><\/div>\n<\/div>\n<\/div><\/div>\n<\/section>\n<p><!-- ====== RANGES & CMC (placeholders) ====== --><\/p>\n<section class=\"section\" style=\"background:var(--bg)\">\n<div class=\"wrap\">\n    <span class=\"eyebrow\" style=\"display:block;text-align:center\">Measurement range<\/span><\/p>\n<h2 class=\"section-title\">Typical measurement ranges &amp; CMC<\/h2>\n<p class=\"lead\">The table below lists typical parameters &amp; measurement ranges for this discipline.<\/p>\n<div class=\"cmp\">\n<table class=\"cmp-table\">\n<thead>\n<tr>\n<th>Parameter \/ Instrument<\/th>\n<th>Typical measurement range<\/th>\n<th>CMC \/ Measurement uncertainty<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>DC voltage<\/td>\n<td>0 \u2013 1000 V<\/td>\n<td><span class=\"vrf\">[Verify against scope]<\/span><\/td>\n<\/tr>\n<tr>\n<td>DC current<\/td>\n<td>0 \u2013 20 A<\/td>\n<td><span class=\"vrf\">[Verify against scope]<\/span><\/td>\n<\/tr>\n<tr>\n<td>Resistance<\/td>\n<td>0 \u03a9 \u2013 100 M\u03a9<\/td>\n<td><span class=\"vrf\">[Verify against scope]<\/span><\/td>\n<\/tr>\n<tr>\n<td>AC voltage<\/td>\n<td>up to 1000 V, up to 100 kHz<\/td>\n<td><span class=\"vrf\">[Verify against scope]<\/span><\/td>\n<\/tr>\n<tr>\n<td>Frequency (LF)<\/td>\n<td>up to several MHz<\/td>\n<td><span class=\"vrf\">[Verify against scope]<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<p class=\"scope-warn\">\u26a0 <b>Note:<\/b> The ranges &amp; CMC below are <b>typical reference values<\/b>. Please <b>verify against Techmaster&#8217;s official Scope of Accreditation<\/b> before publishing \u2014 actual CMC depends on the reference standard, method and measurement conditions.<\/p>\n<\/p><\/div>\n<\/section>\n<p><!-- ====== STANDARDS & TRACEABILITY ====== --><\/p>\n<section class=\"section\">\n<div class=\"wrap\">\n    <span class=\"eyebrow\" style=\"display:block;text-align:center\">Standards &amp; traceability<\/span><\/p>\n<h2 class=\"section-title\">Reference standards &amp; traceability<\/h2>\n<div class=\"prose\">\n<p>Electrical measurements are traceable to the SI <strong>volt (V)<\/strong> and <strong>ohm (\u03a9)<\/strong> through certified multifunction calibrators (e.g. Fluke 5xxx), in turn traceable to Josephson\/quantum-Hall standards at the national level.<\/p>\n<\/div><\/div>\n<\/section>\n<p><!-- ====== WHY TECHMASTER ====== --><\/p>\n<section class=\"section\" style=\"background:var(--bg)\">\n<div class=\"wrap\">\n    <span class=\"eyebrow\" style=\"display:block;text-align:center\">Why Techmaster<\/span><\/p>\n<h2 class=\"section-title\">A trusted calibration partner for factories &amp; labs<\/h2>\n<div class=\"why-grid\">\n<div class=\"why\">\n<div class=\"ic\">\ud83c\udf10<\/div>\n<h3>Internationally recognized<\/h3>\n<p>Our lab is ISO\/IEC 17025:2017 accredited by ANAB (USA); certificates are recognized worldwide through ILAC-MRA.<\/p>\n<\/div>\n<div class=\"why\">\n<div class=\"ic\">\ud83d\udd17<\/div>\n<h3>SI traceability<\/h3>\n<p>Reference standards are traceable to the SI International System of Units, ensuring reliable, comparable measurement results.<\/p>\n<\/div>\n<div class=\"why\">\n<div class=\"ic\">\ud83d\ude90<\/div>\n<h3>On-site calibration<\/h3>\n<p>A mobile calibration capability performs work right at your facility, cutting downtime and equipment transport risk.<\/p>\n<\/div>\n<div class=\"why\">\n<div class=\"ic\">\ud83d\udcbb<\/div>\n<h3>E-Certificate 24\/7<\/h3>\n<p>Look up and manage certificates, history and recalibration reminders online anytime via portal.techmaster.us.<\/p>\n<\/div>\n<div class=\"why\">\n<div class=\"ic\">\ud83c\udfed<\/div>\n<h3>Two labs, nationwide reach<\/h3>\n<p>An HCMC head office and a Bac Ninh branch serve the southern and northern manufacturing regions quickly.<\/p>\n<\/div>\n<div class=\"why\">\n<div class=\"ic\">\ud83c\udf93<\/div>\n<h3>Trusted since 2014<\/h3>\n<p>Over 10 years serving electronics, EMS, semiconductor plants and labs across Vietnam with an experienced engineering team.<\/p>\n<\/div>\n<\/div><\/div>\n<\/section>\n<p><!-- ====== HOW TO (HowTo) ====== --><\/p>\n<section class=\"section\" id=\"quy-trinh\">\n<style>\n  \/* ===== How To (HowTo) ===== *\/\n  .howto-steps{max-width:1000px;margin:34px auto 0;display:grid;grid-template-columns:repeat(3,1fr);gap:18px;counter-reset:htstep}\n  .howto-step{position:relative;background:#fff;border:1px solid var(--line);border-radius:14px;padding:24px 20px 20px;box-shadow:var(--shadow-s)}\n  .howto-step::before{counter-increment:htstep;content:counter(htstep);position:absolute;top:-16px;left:20px;width:38px;height:38px;border-radius:50%;background:var(--blue);color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center;font-size:17px;box-shadow:0 4px 12px rgba(27,85,166,.35)}\n  .howto-step h3{font-size:16px;margin:10px 0 6px;color:var(--navy)}\n  .howto-step p{margin:0;color:var(--muted);font-size:14px}\n  @media (max-width:980px){.howto-steps{grid-template-columns:1fr 1fr}}\n  @media (max-width:560px){.howto-steps{grid-template-columns:1fr}}\n  <\/style>\n<div class=\"wrap\">\n    <span class=\"eyebrow\" style=\"display:block;text-align:center\">Process<\/span><\/p>\n<h2 class=\"section-title\">The Electrical and Electromagnetic calibration process at Techmaster<\/h2>\n<p class=\"lead\">A transparent 6-step process to ISO\/IEC 17025 \u2014 from request intake to certificate delivery and recalibration reminders.<\/p>\n<div class=\"howto-steps\">\n<div class=\"howto-step\">\n<h3>Request &amp; quotation<\/h3>\n<p>We log your equipment list, discipline and technical requirements, advise the scope and send a fast calibration quote.<\/p>\n<\/div>\n<div class=\"howto-step\">\n<h3>Pickup or on-site<\/h3>\n<p>Our team collects the equipment from your site, or a mobile calibration unit performs the work right at your facility.<\/p>\n<\/div>\n<div class=\"howto-step\">\n<h3>Perform calibration<\/h3>\n<p>Calibration is carried out using ISO\/IEC 17025 methods, SI-traceable standards and controlled measurement conditions.<\/p>\n<\/div>\n<div class=\"howto-step\">\n<h3>Certificate &amp; label<\/h3>\n<p>We issue the calibration certificate (with error and measurement uncertainty) and apply a calibration label to the device.<\/p>\n<\/div>\n<div class=\"howto-step\">\n<h3>Look up E-Certificate<\/h3>\n<p>Look up and download certificates online 24\/7 via portal.techmaster.us and manage your full calibration history.<\/p>\n<\/div>\n<div class=\"howto-step\">\n<h3>Recalibration reminder<\/h3>\n<p>Our system reminds you of the next recalibration at a suitable interval, keeping your compliance continuously valid.<\/p>\n<\/div>\n<\/div><\/div>\n<\/section>\n<p><!-- ====== ON-SITE BANNER ====== --><\/p>\n<section class=\"imgbanner\">\n<div class=\"wrap imgbanner-inner\">\n    <span class=\"eyebrow\">Calibration in the field<\/span><\/p>\n<h2>On-site calibration \u2014 no production downtime<\/h2>\n<p>For equipment that is hard to remove or must run continuously, the Techmaster team brings the lab to your factory. On-site service is available nationwide.<\/p>\n<p>    <a class=\"btn btn-primary\" href=\"#lien-he\">Book on-site calibration<\/a>\n  <\/div>\n<\/section>\n<p><!-- ====== RELATED DISCIPLINES (internal links) ====== --><\/p>\n<section class=\"section\">\n<div class=\"wrap\">\n    <span class=\"eyebrow\" style=\"display:block;text-align:center\">Other disciplines<\/span><\/p>\n<h2 class=\"section-title\">Other calibration disciplines<\/h2>\n<p class=\"lead\">Techmaster calibrates across 12 metrology disciplines. Explore related disciplines:<\/p>\n<div class=\"domains\" style=\"margin-top:30px\"><a class=\"domain\" href=\"https:\/\/techmaster.com.vn\/en\/length-measurement\/\"><\/p>\n<div class=\"ic\">\ud83d\udccf<\/div>\n<div><b>Length Measurement<\/b><\/div>\n<p><\/a><a class=\"domain\" href=\"https:\/\/techmaster.com.vn\/en\/mass-measurement\/\"><\/p>\n<div class=\"ic\">\u2696\ufe0f<\/div>\n<div><b>Mass Measurement<\/b><\/div>\n<p><\/a><a class=\"domain\" href=\"https:\/\/techmaster.com.vn\/en\/force-measurement-hardness\/\"><\/p>\n<div class=\"ic\">\ud83d\udede<\/div>\n<div><b>Force &#038; Hardness<\/b><\/div>\n<p><\/a><a class=\"domain\" href=\"https:\/\/techmaster.com.vn\/en\/pressure\/\"><\/p>\n<div class=\"ic\">\ud83d\udcca<\/div>\n<div><b>Pressure<\/b><\/div>\n<p><\/a><a class=\"domain\" href=\"https:\/\/techmaster.com.vn\/en\/sound-vibration-calibration\/\"><\/p>\n<div class=\"ic\">\ud83d\udd0a<\/div>\n<div><b>Sound &#038; Vibration<\/b><\/div>\n<p><\/a><a class=\"domain\" href=\"https:\/\/techmaster.com.vn\/en\/volume-flow\/\"><\/p>\n<div class=\"ic\">\ud83d\udca7<\/div>\n<div><b>Volume &#038; Flow<\/b><\/div>\n<p><\/a><a class=\"domain\" href=\"https:\/\/techmaster.com.vn\/en\/chemistry-physics\/\"><\/p>\n<div class=\"ic\">\ud83e\uddea<\/div>\n<div><b>Chemistry &#038; Physics<\/b><\/div>\n<p><\/a><a class=\"domain\" href=\"https:\/\/techmaster.com.vn\/en\/electrical-calibration-high-frequency-waves\/\"><\/p>\n<div class=\"ic\">\ud83d\udce1<\/div>\n<div><b>RF &#038; Microwave<\/b><\/div>\n<p><\/a><a class=\"domain\" href=\"https:\/\/techmaster.com.vn\/en\/time-measurement-frequency\/\"><\/p>\n<div class=\"ic\">\u23f1\ufe0f<\/div>\n<div><b>Time &#038; Frequency<\/b><\/div>\n<p><\/a><a class=\"domain\" href=\"https:\/\/techmaster.com.vn\/en\/temperature-measurement\/\"><\/p>\n<div class=\"ic\">\ud83c\udf21\ufe0f<\/div>\n<div><b>Temperature &#038; Humidity<\/b><\/div>\n<p><\/a><a class=\"domain\" href=\"https:\/\/techmaster.com.vn\/en\/photometry-and-radiometry\/\"><\/p>\n<div class=\"ic\">\ud83d\udca1<\/div>\n<div><b>Photometry &#038; Radiometry<\/b><\/div>\n<p><\/a><\/div>\n<div style=\"text-align:center;margin-top:30px\"><a class=\"btn btn-outline\" href=\"https:\/\/techmaster.com.vn\/en\/calibration\/\">\u2190 Back to Calibration services<\/a><\/div>\n<\/p><\/div>\n<\/section>\n<p><!-- ====== FAQ (AEO) ====== --><\/p>\n<section class=\"section faq\">\n<div class=\"wrap\">\n    <span class=\"eyebrow\" style=\"display:block;text-align:center\">Q &amp; A<\/span><\/p>\n<h2 class=\"section-title\">Frequently asked questions<\/h2>\n<div class=\"faq-list\">\n<details class=\"q\" open>\n<summary>Which multimeters can Techmaster calibrate? <span class=\"pm\">+<\/span><\/summary>\n<div class=\"a\">Handheld and bench DMMs across accuracy classes and counts, covering DCV\/ACV, DCI\/ACI, resistance, capacitance and frequency. Results include measurement uncertainty.<\/div>\n<\/details>\n<details class=\"q\">\n<summary>Do you calibrate oscilloscopes? <span class=\"pm\">+<\/span><\/summary>\n<div class=\"a\">Yes. Techmaster calibrates key oscilloscope parameters (amplitude accuracy, timebase\/bandwidth, etc.) using a dedicated oscilloscope calibrator.<\/div>\n<\/details>\n<details class=\"q\">\n<summary>Can electrical safety testers be calibrated? <span class=\"pm\">+<\/span><\/summary>\n<div class=\"a\">Yes. Techmaster calibrates insulation resistance, earth resistance and electrical safety testers within scope.<\/div>\n<\/details>\n<details class=\"q\">\n<summary>Lab or on-site for electrical instruments? <span class=\"pm\">+<\/span><\/summary>\n<div class=\"a\">Most DMMs and clamp meters can be done in the lab or on-site. Fixed or line equipment can be calibrated on-site with calibrated portable standards.<\/div>\n<\/details>\n<\/div><\/div>\n<\/section>\n<p><!-- ====== CONTACT (contact form) ====== --><\/p>\n<style>\n  \/* form removed -> center the info panel *\/\n  #lien-he .lh-grid{grid-template-columns:minmax(0,720px);justify-content:center}\n  #lien-he .lh-head{margin-bottom:30px}\n  <\/style>\n<section class=\"section lh-section\" id=\"lien-he\">\n<style>\n  \/* ===== Contact section (CF7-ready template) ===== *\/\n  .lh-section{padding:64px 0}\n  .lh-head{display:flex;align-items:center;justify-content:center;gap:14px;margin-bottom:40px}\n  .lh-head .ln{height:1px;width:120px;background:linear-gradient(90deg,transparent,#cdd9ea)}\n  .lh-head .ln.r{background:linear-gradient(90deg,#cdd9ea,transparent)}\n  .lh-head .chev{display:inline-flex;gap:2px;color:#9fb6d6}\n  .lh-head .chev svg{width:13px;height:13px;stroke:currentColor;stroke-width:2.4;fill:none;stroke-linecap:round;stroke-linejoin:round}\n  .lh-head .title{font-size:23px;font-weight:800;letter-spacing:.18em;color:var(--navy);white-space:nowrap}\n  .lh-grid{display:grid;grid-template-columns:1fr 1.08fr;gap:34px;align-items:start}\n  .info-col{display:flex;flex-direction:column;gap:20px}\n  .info-panel{background:linear-gradient(150deg,#0E3470 0%,#1B55A6 100%);color:#fff;border-radius:16px;padding:34px 32px;box-shadow:0 14px 40px rgba(11,47,94,.10)}\n  .info-panel h2{margin:0 0 14px;font-size:21px;font-weight:800;line-height:1.32;text-transform:uppercase;color:#fff;text-align:left}\n  .info-panel .intro{margin:0 0 22px;font-size:14px;color:rgba(255,255,255,.84)}\n  .ip-card{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);border-radius:12px;padding:18px 20px;margin-bottom:16px}\n  .ip-card:last-of-type{margin-bottom:0}\n  .ip-card h3{margin:0 0 10px;font-size:14px;font-weight:700;text-transform:uppercase;letter-spacing:.02em;color:#fff}\n  .ip-card p{margin:6px 0;font-size:13.5px;color:rgba(255,255,255,.82)}\n  .ip-card p b{color:#fff;font-weight:600}\n  .ip-foot{margin-top:20px;padding-top:16px;border-top:1px solid rgba(255,255,255,.16);font-size:12.5px;color:rgba(255,255,255,.7)}\n  .ip-foot p{margin:3px 0}\n  .info-note{color:var(--muted);font-size:14px}\n  .info-note p{margin:0 0 12px}\n  .info-note strong{color:var(--ink)}\n  .form-col{background:#fff;border:1px solid #EAEFF5;border-top:3px solid var(--blue);border-radius:16px;box-shadow:0 14px 40px rgba(11,47,94,.10);padding:30px 30px 32px}\n  .fld{margin-bottom:16px}\n  .fld:last-child{margin-bottom:0}\n  .fld label{display:block;font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--navy);margin-bottom:7px}\n  .fld label .req{color:#d92d20}\n  .fld input,.fld textarea{font-family:inherit;font-size:14.5px;color:var(--ink);background:#fff;border:1px solid var(--line);border-radius:8px;padding:12px 14px;width:100%;transition:.15s}\n  .fld input::placeholder,.fld textarea::placeholder{color:#9aa7b5}\n  .fld input:focus,.fld textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(27,85,166,.12)}\n  .fld textarea{min-height:120px;resize:vertical}\n  .captcha-box{border:1px solid var(--line);border-radius:8px;padding:14px;display:flex;flex-direction:column;gap:10px;max-width:240px}\n  .captcha-code{font-family:'Courier New',monospace;font-size:22px;font-weight:700;letter-spacing:.32em;color:#3a4a5e;background:repeating-linear-gradient(45deg,#f3f6fb,#f3f6fb 6px,#eef2f8 6px,#eef2f8 12px);border-radius:6px;padding:6px 12px;text-align:center;user-select:none;font-style:italic}\n  .captcha-box input{font-family:inherit;font-size:14.5px;border:1px solid var(--line);border-radius:8px;padding:10px 13px;width:100%}\n  .captcha-box input:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(27,85,166,.12)}\n  .btn-submit{margin-top:22px;width:100%;display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--blue);color:#fff;font-weight:700;font-size:15px;text-transform:uppercase;letter-spacing:.03em;border:0;border-radius:8px;padding:15px 24px;cursor:pointer;transition:.2s;box-shadow:0 8px 20px rgba(27,85,166,.28)}\n  .btn-submit:hover{background:var(--blue-d)}\n  @media (max-width:880px){.lh-grid{grid-template-columns:1fr;gap:26px}.lh-head .ln{width:48px}}\n  <\/style>\n<div class=\"wrap\">\n<div class=\"lh-head\">\n      <span class=\"ln\"><\/span><span class=\"chev\"><svg viewBox=\"0 0 24 24\"><path d=\"M9 6l6 6-6 6\"\/><\/svg><svg viewBox=\"0 0 24 24\"><path d=\"M9 6l6 6-6 6\"\/><\/svg><\/span><span class=\"title\">CONTACT<\/span><span class=\"chev\"><svg viewBox=\"0 0 24 24\"><path d=\"M15 6l-6 6 6 6\"\/><\/svg><svg viewBox=\"0 0 24 24\"><path d=\"M15 6l-6 6 6 6\"\/><\/svg><\/span><span class=\"ln r\"><\/span>\n    <\/div>\n<div class=\"lh-grid\">\n<div class=\"info-col\">\n<div class=\"info-panel\">\n<h2>Techmaster Electronics JSC<\/h2>\n<p class=\"intro\">Please contact Techmaster using the details below. Our team is always ready to assist and answer any questions you may have. Thank you for trusting our services.<\/p>\n<div class=\"ip-card\">\n<h3>Head Office (Ho Chi Minh City)<\/h3>\n<p><b>Address:<\/b> 175 Vo Nguyen Giap, An Khanh Ward, Ho Chi Minh City<\/p>\n<p><b>Hotline:<\/b> +84 908 173 345<\/p>\n<p><b>Email:<\/b> marketing@techmaster.com.vn<\/p>\n<\/p><\/div>\n<div class=\"ip-card\">\n<h3>Bac Ninh Branch<\/h3>\n<p><b>Address:<\/b> D1, Phu Dien Urban Area, Dong Nguyen Ward, Bac Ninh Province<\/p>\n<\/p><\/div>\n<div class=\"ip-foot\">\n<p>Business Registration No.: 0312668882 (issued 28\/02\/2014)<\/p>\n<p>Issued by: Department of Planning and Investment, Ho Chi Minh City<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"info-note\">\n<p>We are here and remain the right choice for you.<\/p>\n<p>Techmaster&#8217;s technical staff are ready to address any questions, concerns or requests about our calibration information and services. Please complete the form below so we can respond to your enquiry.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n<p><!-- ====== CTA BAND ====== --><\/p>\n<section class=\"ctaband\">\n<div class=\"wrap ctaband-inner\">\n<div>\n<h2>Need ISO\/IEC 17025 accredited calibration?<\/h2>\n<p>Get expert advice on the right calibration discipline and a fast quote from the Techmaster team.<\/p>\n<\/div>\n<div style=\"display:flex;gap:12px;flex-wrap:wrap\">\n      <a class=\"btn btn-outline\" href=\"tel:0908173345\">\ud83d\udcde 0908 173 345<\/a><br \/>\n      <a class=\"btn btn-primary\" style=\"background:#fff;color:var(--blue)\" href=\"#lien-he\">Request a quote<\/a>\n    <\/div>\n<\/p><\/div>\n<\/section>\n<p><script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@graph\": [\n    {\n      \"@type\": \"WebPage\",\n      \"@id\": \"https:\/\/techmaster.com.vn\/en\/electrical-calibration\/#webpage\",\n      \"url\": \"https:\/\/techmaster.com.vn\/en\/electrical-calibration\/\",\n      \"name\": \"Electrical Calibration (DMM, scopes) | Techmaster\",\n      \"description\": \"ISO\/IEC 17025 electrical calibration \u2014 multimeters, DC sources, oscilloscopes, clamp meters, safety testers. ANAB & ILAC-MRA recognized. 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