Flexible flat cable (FFC) gaw electronic jak ni hta ahkyak ai signal shapoi ai ladat rai nna, shi a hkamja lam gaw jak a ngang grin ai lam hte kam hpa mai ai lam hpe hkrak sha hkra machyi shangun ai. FFC a bungli galaw ai lam hpe madang hte maren galaw lu na matu, hkrang shapraw ai jep joi ai lam hpe grai sadi maja let hkang zing da ai. Lahta na gaw, madung jep joi ai lam ni hpe hkrak tup tsun dan da ai.
Hkum hkrang hpe jep yu ai gaw shawng nnan na lahkam re. Myi man hte (sh) magnifying glass hte, cable ntsa kaw n-gun n rawng ai, n-gun rawng ai, n-gun n rawng ai, oxidation masat kumla ni n nga ai kun ngu jep yu u. Conductor ni hkrat sum ai, n hkrak ai, shing nrai, short circuit byin wa chye ai hpe jep yu na matu myit maju jung u. Bai nna, insulation hta bubbles, delamination, shing nrai, hkra machyi ai lam n nga ai hpe mung, jut ni gaw n-gun n rawng ai, n-gun n rawng ai hpe mung jep yu u. Ndai n kaja ai lam ni a majaw, hpang de lang ai shaloi wan n-gun yawm mat chye ai.
Dimensional shadawn na matu hkrak tup ai arung arai ni ra ai. Industry a madang hte maren, cable a galu kaba ai lam, galu kaba ai lam, conductor ni a tsan gang ai lam ni hpe jep joi nna, design ra ai lam ni hpe hkan sa ai kun ngu ai hpe jep yu ai, hkam sharang ai lam ni gaw ±0.05mm laman hta sha nga ai. Micrometer (sh) optical shadawn shadang jak hpe lang nna, hkrak ai shiga ni hpe lu la na matu, connector ni a htuk manu ai lam hpe hkra machyi shangun chye ai dimensional deviations ni hpe koi lu na matu galaw u.
Wan n-gun atsam hpe chyam yu ai gaw ahkyak ai lahkam langai rai nga ai. Multimeter (sh) laksan impedance analyzer hpe lang nna conductor a matut manoi ai lam hpe shadawn nna, daw garan ai lam (sh) n kaja ai matut mahkai lam ni hpe jep yu u. Vistand voltage chyam dinglik ai hta, n-gun n-gun n-htum hkra, n-gun n-gun (ga shadawn, 500V DC) hpe n yawm htum minit 1 daram lang ai. Dai hta n-ga, conductor ni a lapran na insulation resistance hpe chyam yu ai, 100MΩ hta grau kaba ai (sh) dai hte maren sha ra ai, n-gun rawng ai signal hpe n-gun rawng hkra shalai ya lu na matu.
Mechanical bungli galaw ai lam hpe jep joi ai lam hta bending hte tensile chyam dinglik ai lam ni lawm ai. Dai cable hpe masat da ai radius (ga shadawn, R=3mm) hta kalang 1,000 jan bai shinggrup nna, conductor hkrat sum ai (sh) insulation hkrat sum ai hpe yu lu ai. Tensile test gaw, rated tensile force (ga shadawn, 5N) a npu e, cable a npawt nhpang hpe hkam la lu na matu, n-gun jat ai shaloi hkrum katut ai n-gun ni hpe shingdaw ai.
Hpang jahtum, grup yin hpe galai shai lu ai atsam chyam dinglik ai lam gaw, aten galu kam hpa mai ai lam hpe jep chyoi na matu, nbung katsi ai (85℃), nbung katsi ai (-40℃), shing nrai, nbung katsi ai (95% RH) zawn re ai grai sawng ai masa ni hta bungli galaw ai lam hpe shingdaw ai.
Ndai multi-dimensional chyam dinglik ai lam ni hku nna, FFC ni a hkamja lam hpe tup hkrak kam mai ai, electronic jak ni a ngang grin ai bungli galaw lu na matu npawt nhpang hpe gaw gap ya ai. Ndai ngang kang ai ladat gaw hpaga lam a madang ni hpe hkan sa ai sha n-ga, jahtum lang ai ni a matu ahkyak ai ga sadi hpe mung madun dan nga ai.