IEK UNIVERSAL Series User manual

1
ÌÓËÜÒÈÌÅÒÐÛ ÖÈÔÐÎÂÛÅ Ì830B; Ì832; Ì838
ÑÅÐÈÈ UNIVERSAL
Ðóêîâîäñòâî ïî ýêñïëóàòàöèè. Ïàñïîðò
TMD.U.003.1.C
Íàçíà÷åíèå è îáëàñòü ïðèìåíåíèÿ
Ìóëüòèìåòðû öèôðîâûå Ì830B; Ì832; Ì838 ñåðèè UNIVERSAL
òîâàðíîãî çíàêà IEK (äàëåå – ìóëüòèìåòðû) ïðåäñòàâëÿþò ñîáîé
ïðîôåññèîíàëüíûå ïðèáîðû ñ LCD-äèñïëååì íà 3 ½ ðàçðÿäà. Ïðèáîðû
âûïîëíÿþò ñëåäóþùèå ôóíêöèè:
– èçìåðåíèå ñèëû ïîñòîÿííîãî òîêà ;
– èçìåðåíèå çíà÷åíèÿ ïîñòîÿííîãî íàïðÿæåíèÿ ;
– èçìåðåíèå çíà÷åíèÿ ïåðåìåííîãî íàïðÿæåíèÿ ;
– èçìåðåíèå ýëåêòðè÷åñêîãî ñîïðîòèâëåíèÿ ;
– èçìåðåíèå åìêîñòè êîíäåíñàòîðîâ ;
– ïðîâåðêà äèîäîâ è òðàíçèñòîðîâ ;
– ïðîâåðêà öåëîñòíîñòè öåïè (çâóêîâàÿ ïðîçâîíêà) ;
– èçìåðåíèå òåìïåðàòóðû ;
– ãåíåðàöèÿ ñèãíàëîâ ÷àñòîòîé 50 Ãö (ìåàíäð) .
Ìóëüòèìåòðû ñîîòâåòñòâóþò òðåáîâàíèÿì ÃÎÑÒ IEC 61010-1,
ÃÎÑÒ IEC 61010-2-030 â ÷àñòè áåçîïàñíîñòè ïðèáîðîâ è ÃÎÑÒ Ð ÌÝÊ 61326-1,
ÃÎÑÒ Ð 51522.2.2 (ÌÝÊ 61326-2-2) â ÷àñòè ýëåêòðîìàãíèòíîé ñîâìåñòèìîñòè.

2
Ýëåìåíòû ëèöåâîé ïàíåëè ïðåäñòàâëåíû íà ðèñóíêå 1.
1 – LCD-äèñïëåé 3 ½ ðàçðÿäà, âûñîòà çíàêîâ 12,7 ìì. Äèñïëåé
îòîáðàæàåò â öèôðîâîì âèäå ðåçóëüòàò èçìåðåíèÿ.
2 – Ïîâîðîòíûé ïåðåêëþ÷àòåëü äèàïàçîíîâ èñïîëüçóåòñÿ äëÿ âûáîðà
ôóíêöèè è ïðåäåëà èçìåðåíèÿ, à òàêæå äëÿ âêëþ÷åíèÿ/ îòêëþ÷åíèÿ
ïðèáîðà. Ìóëüòèìåòð íå ðàáîòàåò, êîãäà ïåðåêëþ÷àòåëü óñòàíîâëåí
â ïîëîæåíèå «OFF».
3 – Ãíåçäî äëÿ èçìåðåíèÿ êîýôôèöèåíòà óñèëåíèÿ òðàíçèñòîðîâ hFE.
4 – Âõîäíîå ãíåçäî «10 À» äëÿ ïîäêëþ÷åíèÿ ùóïà ïîëîæèòåëüíîé
ïîëÿðíîñòè ïðè èçìåðåíèè òîêà äî 10 À.
5 – Âõîäíîå ãíåçäî «VWmA» äëÿ ïîäêëþ÷åíèÿ ùóïà ïîëîæèòåëüíîé
ïîëÿðíîñòè ïðè èçìåðåíèè íàïðÿæåíèÿ, ñîïðîòèâëåíèÿ, ñèëû òîêà
äî 200 ìÀ.
6 – Âõîäíîå ãíåçäî «COM» äëÿ ïîäêëþ÷åíèÿ ùóïà îòðèöàòåëüíîé
ïîëÿðíîñòè.
Ðèñóíîê 1 – Ýëåìåíòû ëèöåâîé ïàíåëè ìóëüòèìåòðîâ
1
2
4
5
6
3

3
Òåõíè÷åñêèå õàðàêòåðèñòèêè
Îñíîâíûå òåõíè÷åñêèå ïàðàìåòðû ïðåäñòàâëåíû â òàáëèöå 1.
Òàáëèöà 1
Ïîêàçàòåëü
Ìàêñèìàëüíîå ïîêàçàíèå äèñïëåÿ
Ìåòîä èçìåðåíèÿ
Âðåìÿ èçìåðåíèÿ
Èíäèêàòîð ïåðåãðóçêè
Èíäèêàòîð ïîëÿðíîñòè
Èíäèêàòîð ðàçðÿäà áàòàðåè
Êàòåãîðèÿ èçìåðåíèÿ
Çàùèòà îò ïåðåãðóçêè:
– âõîä «VWmA»
– âõîä «10 À»
Èçîëÿöèÿ êîðïóñà
Ñòåïåíü çàùèòû ïî ÃÎÑÒ 14254 (IEC 60529)
Ðàáî÷àÿ òåìïåðàòóðà, °C
Âûñîòà íàä óðîâíåì ìîðÿ, ì
Íàïðÿæåíèå ïèòàíèÿ, Â
Ðàçìåðû, ìì
Âåñ, ã
Ñðîê ñëóæáû, ëåò
Çíà÷åíèå
1 9 9 9
ÀÖÏ äâîéíîãî èíòåãðèðîâàíèÿ
2–3 èçìåðåíèÿ â ñåêóíäó
Öèôðà «1»
Çíàê « — »
Ñèìâîë « »
II
Ïðåäîõðàíèòåëü 500 ìÀ/250 Â
Áåç ïðåäîõðàíèòåëÿ
Äâîéíàÿ, êëàññ II
IP20
Îò 0 äî ïëþñ 40
2000
9
126ґ70ґ24
150
10
Ïðèìå÷àíèå
Ñ àâòîìàòè÷åñêèì îïðåäåëåíèåì
ïîëÿðíîñòè
Íà LCD-äèñïëåå
Ïðè îòðèöàòåëüíîé ïîëÿðíîñòè
Íà LCD-äèñïëåå
Ïðè îòíîñèòåëüíîé âëàæíîñòè
íå áîëåå 80 %
Áàòàðåÿ òèïà «ÊÐÎÍÀ»
(NEDA 1604, 6F22)
Ñ áàòàðååé

4
Òåõíè÷åñêèå õàðàêòåðèñòèêè ìóëüòèìåòðà ìîäåëè M830B
ïðåäñòàâëåíû â òàáëèöå 2.
Òàáëèöà 2
Ôóíêöèè
Ïîñòîÿííîå íàïðÿæåíèå (V )
Ïåðåìåííîå íàïðÿæåíèå (V ~)
Ïîñòîÿííûé òîê (A )
Ñîïðîòèâëåíèå (W)
Ïðîâåðêà äèîäîâ ( )
Ïðîâåðêà òðàíçèñòîðîâ (hFE)
Äèàïàçîí
200 ì–2000 ì–20–200 –1000 Â
200–750 Â
200 ìêÀ–2000 ìêÀ–20 ìÀ–200 ìÀ–10 À
200 Îì–2000 Îì–20 êÎì–200 êÎì–2000 êÎì
2,8 Â/1 ìÀ
0–1000
Òî÷íîñòü
±1,2 % ± 2 åä. ñ÷åòà
±1,2 % ±10 åä. ñ÷åòà
±2,0 % ± 2 åä. ñ÷åòà
±1,0 % ± 2 åä. ñ÷åòà
–
–
Òåõíè÷åñêèå õàðàêòåðèñòèêè ìóëüòèìåòðà ìîäåëè M832 ïðåäñòàâëåíû
â òàáëèöå 3.
Òàáëèöà 3
Ôóíêöèè
Ïîñòîÿííîå íàïðÿæåíèå (V )
Ïåðåìåííîå íàïðÿæåíèå (V ~)
Ïîñòîÿííûé òîê (A )
Ñîïðîòèâëåíèå (W)
Ïðîâåðêà äèîäîâ ( )
Ïðîâåðêà òðàíçèñòîðîâ (hFE)
Äèàïàçîí
200 ì–2000 ì–20 –200 –1000 Â
200–750 Â
2000 ìêÀ–20 ìÀ–200 ìÀ–10 À
200 Îì–2000 Îì–20 êÎì–200 êÎì–2000 êÎì
2,8 Â/1 ìÀ
0–1000
Òî÷íîñòü
±1,2 % ± 2 åä. ñ÷åòà
±1,2 % ± 10 åä. ñ÷åòà
±2,0 % ± 2 åä. ñ÷åòà
±1,0 % ± 2 åä. ñ÷åòà
–
–

5
Êîìïëåêòíîñòü
Êîìïëåêò ïîñòàâêè ìóëüòèìåòðîâ ïðåäñòàâëåí â òàáëèöå 5.
Äîïîëíèòåëüíî â êîìïëåêò ïîñòàâêè ìóëüòèìåòðîâ M838 âõîäèò
òåðìîïàðà òèïà «Ê»: ÒÐ-01 – 1 øò.
Èíôîðìàöèÿ ïî áåçîïàñíîñòè
Ìåðû ïî çàùèòå îò ïîðàæåíèÿ ýëåêòðè÷åñêèì òîêîì
Ïðè ðàáîòå ñ öèôðîâûì ìóëüòèìåòðîì ñëåäóéòå âñåì ïðàâèëàì
ðàáîòû ñ ïðèáîðîì è óêàçàíèÿì ïî áåçîïàñíîñòè, ÷òîáû èçáåæàòü
ïîðàæåíèÿ ýëåêòðè÷åñêèì òîêîì:
– íå èñïîëüçóéòå ìóëüòèìåòð, åñëè îí èìååò ïîâðåæäåíèÿ êîðïóñà.
Óäåëÿéòå îñîáîå âíèìàíèå ãí¸çäàì ïîäêëþ÷åíèÿ;
– èñïîëüçóéòå îðèãèíàëüíûå ùóïû äëÿ ýòîé ìîäåëè ìóëüòèìåòðà;
– íå ïîëüçóéòåñü íåèñïðàâíûìè ùóïàìè, ðåãóëÿðíî ïðîâåðÿéòå
èçîëÿöèþ ùóïîâ, ïðè íåîáõîäèìîñòè çàìåíèòå ùóïû àíàëîãè÷íûìè òîé æå
ìîäåëè èëè ñ òåìè æå ýëåêòðè÷åñêèìè ïàðàìåòðàìè;
Òàáëèöà 5
Íàèìåíîâàíèå
Ìóëüòèìåòð
Òåñòîâûå ùóïû
Áàòàðåÿ 9 Â
Ðóêîâîäñòâî ïî ýêñïëóàòàöèè. Ïàñïîðò
Óïàêîâî÷íàÿ êîðîáêà
Êîëè÷åñòâî
1 øò.
1 ïàðà
1 øò.
1 ýêç.
1 øò.
Òåõíè÷åñêèå õàðàêòåðèñòèêè ìóëüòèìåòðà ìîäåëè M838 ïðåäñòàâëåíû
â òàáëèöå 4.
Òàáëèöà 4
Ôóíêöèè
Ïîñòîÿííîå íàïðÿæåíèå (V )
Ïåðåìåííîå íàïðÿæåíèå (V ~)
Ïîñòîÿííûé òîê (A )
Ñîïðîòèâëåíèå (W)
Ïðîâåðêà äèîäîâ ( )
Ïðîâåðêà òðàíçèñòîðîâ (hFE)
Èçìåðåíèå òåìïåðàòóðû (°Ñ)
Äèàïàçîí
200 ì–2000 ì–20 –200 –1000 Â
200–750 Â
2000 ìêÀ–20 ìÀ–200 ìÀ–10 À
200 Îì–2000 Îì–20 êÎì–200 êÎì–2000 êÎì
2,8 Â/1 ìÀ
0–1000
îò ìèíóñ 20 äî 1370
Òî÷íîñòü
±1,2 % ± 2 åä. ñ÷åòà
±1,2 % ± 10 åä. ñ÷åòà
±2,0 % ± 2 åä. ñ÷åòà
±1,0 % ± 2 åä. ñ÷åòà
–
–
±1,5 % ± 2 åä. ñ÷åòà

6
– íå ïðåâûøàéòå âåëè÷èí ïîðîãîâûõ çíà÷åíèé, óêàçàííûõ â òàáëèöå 6;
– åñëè çíà÷åíèå èçìåðÿåìîãî ïàðàìåòðà çàðàíåå íå èçâåñòíî,
óñòàíîâèòå ìàêñèìàëüíûé äèàïàçîí;
– íå ïðèêàñàéòåñü ê íåèñïîëüçóåìûì ãíåçäàì, êîãäà ìóëüòèìåòð
ïîäêëþ÷¸í ê èçìåðÿåìîé ñõåìå;
– íèêîãäà íå ïîëüçóéòåñü ìóëüòèìåòðîì ïðè íåçàêðûòîé çàäíåé
êðûøêå èëè ñ íåïëîòíî çàêðûòûì êîðïóñîì;
– ïîäêëþ÷àéòå èñïûòàòåëüíûé ùóï ïîñëå ïîäêëþ÷åíèÿ îáùåãî,
ðàçúåäèíÿéòå â îáðàòíîì ïîðÿäêå;
– íå èçìåðÿéòå ñîïðîòèâëåíèå â ñõåìå, íàõîäÿùåéñÿ
ïîä íàïðÿæåíèåì;
– âî èçáåæàíèå ïîðàæåíèÿ ýëåêòðè÷åñêèì òîêîì èç-çà íåïðàâèëüíûõ
ïîêàçàíèé ïðèáîðà çàìåíÿéòå áàòàðåþ íåìåäëåííî ïðè ïîÿâëåíèè çíà÷êà
« »;
– âñåãäà áóäüòå îñòîðîæíû ïðè ðàáîòå ñ íàïðÿæåíèåì âûøå 42 Â,
ïðè èçìåðåíèÿõ äåðæèòå ïàëüöû çà áàðüåðíîé êðîìêîé ùóïîâ.
Ìåðû ïî çàùèòå ìóëüòèìåòðà îò íåïðàâèëüíîãî ïðèìåíåíèÿ
Âî èçáåæàíèå ïîâðåæäåíèÿ ìóëüòèìåòðà ñëåäóéòå ñëåäóþùèì
ðåêîìåíäàöèÿì:
– îòêëþ÷àéòå ïèòàíèå è ðàçðÿæàéòå âûñîêîâîëüòíûå êîíäåíñàòîðû
ïðè èçìåðåíèè ýëåêòðè÷åñêîãî ñîïðîòèâëåíèÿ, ïðîâåðêå öåëîñòíîñòè
öåïè, äèîäîâ;
– èñïîëüçóéòå ãí¸çäà, ôóíêöèè è äèàïàçîíû èçìåðåíèé â ñîîòâåòñòâèè
ñ èíñòðóêöèåé;
Òàáëèöà 6
Ôóíêöèÿ/Ïðåäåë èçìåðÿåìîãî äèàïàçîíà
V / 200 ìÂ
V ~ / 200 ìÂ
V / 20–1000 ìÂ
V ~ / 200–750 ìÂ
À / 200 ìÀ
À ~ / 200 ìÀ
À / 10 À
Ìàêñèìàëüíûé âõîäíîé ñèãíàë
250 Â
600 Â ~
1000 Â
750 Â ~
200 ìÀ /~
10 À

7
– ïåðåä ïîâîðîòîì ïåðåêëþ÷àòåëÿ äèàïàçîíîâ äëÿ ñìåíû ôóíêöèè è
äèàïàçîíà èçìåðåíèé îòñîåäèíèòå èçìåðèòåëüíûå ùóïû îò ïðîâåðÿåìîé
öåïè;
– ïðè ïðîâåäåíèè ðàáîò ñ òåëåâèçèîííûìè ïðè¸ìíèêàìè, ìîíèòîðàìè
è èìïóëüñíûìè èñòî÷íèêàìè ïèòàíèÿ ïîìíèòå, ÷òî â íåêîòîðûõ òî÷êàõ èõ
ýëåêòðè÷åñêèõ ñõåì ïðèñóòñòâóþò èìïóëüñíûå íàïðÿæåíèÿ âûñîêîé
àìïëèòóäû, ñïîñîáíûå ïîâðåäèòü ìóëüòèìåòð;
– ïðåäîõðàíÿéòå ìóëüòèìåòð îò âîçäåéñòâèÿ ïðÿìûõ ñîëíå÷íûõ ëó÷åé,
âûñîêîé òåìïåðàòóðû è âëàæíîñòè.
Ñèìâîëû áåçîïàñíîñòè ïðåäñòàâëåíû â òàáëèöå 7.
Óõîä è îáñëóæèâàíèå
ÂÍÈÌÀÍÈÅ!  ñëó÷àå íàðóøåíèÿ óñòàíîâëåííûõ ïðîèçâîäèòåëåì
ïðàâèë ýêñïëóàòàöèè ïðèìåí¸ííàÿ â äàííîì ïðèáîðå çàùèòà ìîæåò
óõóäøèòüñÿ.
Ïðè ïîÿâëåíèè ñáîåâ èëè îøèáîê â ðàáîòå ìóëüòèìåòðà íåìåäëåííî
ïðåêðàòèòå åãî ýêñïëóàòàöèþ. Ïðîâåðêà ðàáîòû è ðåìîíò ïðèáîðà äîëæíû
âûïîëíÿòüñÿ â ñïåöèàëèçèðîâàííûõ ìàñòåðñêèõ.
Ïðîòèðàéòå ìóëüòèìåòð ìÿãêîé òêàíüþ, íå ïðèìåíÿéòå äëÿ ÷èñòêè
àáðàçèâû è ðàñòâîðèòåëè. Ýëåêòðîííàÿ ñõåìà ìóëüòèìåòðà íå íóæäàåòñÿ
â ÷èñòêå.
Õðàíåíèå ïîñëå ýêñïëóàòàöèè
Ïðè õðàíåíèè ïîñëå ýêñïëóàòàöèè ñîáëþäàéòå ñëåäóþùèå
ðåêîìåíäàöèè:
– îòêëþ÷èòå ùóïû îò ìóëüòèìåòðà;
– óáåäèòåñü, ÷òî ìóëüòèìåòð è àêñåññóàðû ñóõèå;
Òàáëèöà 7
Âàæíàÿ èíôîðìàöèÿ ïî áåçîïàñíîñòè. Ïåðåä ðàáîòîé ñ ïðèáîðîì íåîáõîäèìî èçó÷èòü
Ðóêîâîäñòâî ïî ýêñïëóàòàöèè è ñîáëþäàòü âñå ïðàâèëà è ðåêîìåíäàöèè èçãîòîâèòåëÿ
Âîçìîæíî íàëè÷èå âûñîêîãî íàïðÿæåíèÿ
ÀÑ (Ïåðåìåííûé òîê)
DC (Ïîñòîÿííûé òîê)
Çàçåìëåíèå
Ïðåäîõðàíèòåëü
Ïðèáîð çàùèùåí äâîéíîé èçîëÿöèåé
Òðåáóåòñÿ ñïåöèàëüíàÿ óòèëèçàöèÿ

– åñëè â òå÷åíèå äëèòåëüíîãî âðåìåíè âû íå ñîáèðàåòåñü ïîëüçîâàòüñÿ
ìóëüòèìåòðîì, èçâëåêèòå áàòàðåþ, èíà÷å îíà ìîæåò ïîòå÷ü è âûâåñòè
ïðèáîð èç ñòðîÿ.
Èíñòðóêöèÿ ïî ðàáîòå ñ ìóëüòèìåòðîì
Èçìåðåíèå ñèëû ïîñòîÿííîãî òîêà
Ïðè èçìåðåíèè ñèëû òîêà äî 200 ìA âñòàâüòå ðàçú¸ì òåñòîâîãî ùóïà
÷¸ðíîãî öâåòà â ãíåçäî «ÑÎÌ», à ðàçú¸ì òåñòîâîãî ùóïà êðàñíîãî öâåòà –
â ãíåçäî «VWmA». Ïîëÿðíîñòü êðàñíîãî ùóïà ñ÷èòàåòñÿ ïîëîæèòåëüíîé.
Åñëè âû ïðåäïîëàãàåòå, ÷òî èçìåðÿåìûé òîê íàõîäèòñÿ â äèàïàçîíå
îò 200 ìÀ äî 10 À, íåîáõîäèìî ïåðåñòàâèòü êðàñíûé ùóï â ãíåçäî «10 A».
Ïîâîðîòíûì ïåðåêëþ÷àòåëåì âûáåðèòå æåëàåìûé ïðåäåë èçìåðåíèÿ
ïîñòîÿííîãî òîêà A .
Ðàçîìêíèòå èçìåðÿåìóþ öåïü è ïîäñîåäèíèòå ùóïû ïðèáîðà
ïîñëåäîâàòåëüíî ñ íàãðóçêîé, â êîòîðîé èçìåðÿåòñÿ òîê.
Ñ÷èòàéòå ñ äèñïëåÿ ïîêàçàíèÿ âåëè÷èíû è ïîëÿðíîñòè èçìåðÿåìîé
ñèëû òîêà.
Ïî îêîí÷àíèè ðàáîò ïîâîðîòíûé ïåðåêëþ÷àòåëü óñòàíîâèòå
â ïîëîæåíèå «OFF».
Ïðèìå÷àíèÿ.
– Åñëè âåëè÷èíà òîêà çàðàíåå íå èçâåñòíà, óñòàíîâèòå ïåðåêëþ÷àòåëü
ïðåäåëîâ â ïîëîæåíèå 10 À, à çàòåì, ïåðåêëþ÷àÿ íà ìåíüøèå ïðåäåëû,
äîáåéòåñü òðåáóåìîé òî÷íîñòè èçìåðåíèÿ.
– Åñëè íà äèñïëåå îòîáðàæàåòñÿ òîëüêî öèôðà «1» â ëåâîì ðàçðÿäå,
ýòî îçíà÷àåò, ÷òî âîçíèêëà ïåðåãðóçêà è íåîáõîäèìî óñòàíîâèòü
ïåðåêëþ÷àòåëü äèàïàçîíîâ íà áîëüøåå çíà÷åíèå.
Èçìåðåíèå çíà÷åíèÿ ïîñòîÿííîãî è ïåðåìåííîãî íàïðÿæåíèÿ.
Âñòàâüòå ðàçú¸ì òåñòîâîãî ùóïà ÷¸ðíîãî öâåòà â ãíåçäî «ÑÎÌ»,
à ðàçú¸ì òåñòîâîãî ùóïà êðàñíîãî öâåòà – â ãíåçäî «VWmA». Ïîëÿðíîñòü
êðàñíîãî ùóïà ñ÷èòàåòñÿ ïîëîæèòåëüíîé.
Ïîâîðîòíûì ïåðåêëþ÷àòåëåì âûáåðèòå æåëàåìûé ïðåäåë èçìåðåíèÿ
ïîñòîÿííîãî íàïðÿæåíèÿ V èëè ïåðåìåííîãî íàïðÿæåíèÿ V~.
Ïîäñîåäèíèòå ùóïû ïàðàëëåëüíî ê èñòî÷íèêó íàïðÿæåíèÿ èëè íàãðóçêå.
Ñ÷èòàéòå ñ äèñïëåÿ ïîêàçàíèÿ âåëè÷èíû è ïîëÿðíîñòè èçìåðÿåìîãî
íàïðÿæåíèÿ.
Ïî îêîí÷àíèè ðàáîò ïîâîðîòíûé ïåðåêëþ÷àòåëü óñòàíîâèòå
â ïîëîæåíèå «OFF».
8

9
Ïðèìå÷àíèÿ.
– Ïðè óñòàíîâêå ïåðåêëþ÷àòåëÿ ïðåäåëîâ â ïîëîæåíèå «600 V»
íà äèñïëåå ïîÿâèòñÿ çíàê «HV» è «7 », íàïîìèíàþùèé î ðàáîòå ñ âûñîêèì
íàïðÿæåíèåì. Òðåáóåòñÿ îñòîðîæíîñòü.
– Åñëè âåëè÷èíà íàïðÿæåíèÿ çàðàíåå íå èçâåñòíà, óñòàíîâèòå
ïåðåêëþ÷àòåëü ïðåäåëîâ â ïîëîæåíèå ìàêñèìàëüíîãî íàïðÿæåíèÿ, à çàòåì,
ïåðåêëþ÷àÿ íà ìåíüøèå ïðåäåëû, äîáåéòåñü òðåáóåìîé òî÷íîñòè èçìåðåíèÿ.
– Åñëè íà äèñïëåå îòîáðàæàåòñÿ òîëüêî öèôðà «1» â ëåâîì ðàçðÿäå,
ýòî îçíà÷àåò, ÷òî âîçíèêëà ïåðåãðóçêà è íåîáõîäèìî óñòàíîâèòü
ïåðåêëþ÷àòåëü äèàïàçîíîâ íà áîëüøåå çíà÷åíèå.
Èçìåðåíèå ýëåêòðè÷åñêîãî ñîïðîòèâëåíèÿ
Âñòàâüòå ðàçú¸ì òåñòîâîãî ùóïà ÷¸ðíîãî öâåòà â ãíåçäî «ÑÎÌ»,
à ðàçú¸ì òåñòîâîãî ùóïà êðàñíîãî öâåòà – â ãíåçäî «VWmA». Ïîëÿðíîñòü
êðàñíîãî ùóïà ñ÷èòàåòñÿ ïîëîæèòåëüíîé.
Ïîâîðîòíûì ïåðåêëþ÷àòåëåì âûáåðèòå æåëàåìûé ïðåäåë èçìåðåíèÿ
ñîïðîòèâëåíèÿ «W» è ïîäñîåäèíèòå ùóïû ê ðàçíûì êîíöàì èçìåðÿåìîãî
ïðîâîäíèêà.
Ñ÷èòàéòå ñ äèñïëåÿ ïîêàçàíèÿ âåëè÷èíû è ïîëÿðíîñòè èçìåðÿåìîãî
ñîïðîòèâëåíèÿ ïðîâîäíèêà.
Ïî îêîí÷àíèè ðàáîò ïîâîðîòíûé ïåðåêëþ÷àòåëü óñòàíîâèòå
â ïîëîæåíèå «OFF».
ÂÍÈÌÀÍÈÅ! Åñëè èçìåðÿåìîå ñîïðîòèâëåíèå óñòàíîâëåíî â ñõåìå,
ïåðåä ïðîâåäåíèåì èçìåðåíèé âûêëþ÷èòå ïèòàíèå è ðàçðÿäèòå âñå
åìêîñòè ñõåìû.
Ïðèìå÷àíèÿ.
– Åñëè çíà÷åíèå èçìåðÿåìîãî ñîïðîòèâëåíèÿ ïðåâûøàåò
ìàêñèìàëüíóþ âåëè÷èíó âûáðàííîãî ïðåäåëà èçìåðåíèé, íà äèñïëåå
ïîÿâèòñÿ öèôðà «1» â ñòàðøåì ðàçðÿäå.
– Åñëè âõîä íå ïîäñîåäèí¸í, òî åñòü öåïü ðàçîìêíóòà, íà äèñïëåå
ïîÿâèòñÿ öèôðà «1».
– Ïðè èçìåðåíèè ñîïðîòèâëåíèÿ â äèàïàçîíå äî 200 ÌÎì îò çíà÷åíèÿ
ðåçóëüòàòà èçìåðåíèÿ, ïîêàçàííîãî íà äèñïëåå, íóæíî âû÷èòàòü 1 ÌÎì.
– Íàïðÿæåíèå õîëîñòîãî õîäà ïðèáëèçèòåëüíî 2,8 Â.
Èçìåðåíèå òåìïåðàòóðû (òîëüêî äëÿ ìîäåëè Ì838)
Óñòàíîâèòå ïåðåêëþ÷àòåëü äèàïàçîíîâ â ïîëîæåíèå «TEMP», è èíäèêàòîð
ïîêàæåò òåìïåðàòóðó îêðóæàþùåãî âîçäóõà.

10
Ïðèñîåäèíèòå òåðìîïàðó òèïà «Ê» ê ãíåçäàì «ÑÎÌ» è «VWmA».
Ïðèæìèòå òåðìîïàðó ê îáúåêòó èçìåðåíèÿ è ñ÷èòàéòå ñ äèñïëåÿ
çíà÷åíèå òåìïåðàòóðû â ãðàäóñàõ Öåëüñèÿ.
Ïî îêîí÷àíèè ðàáîò ïîâîðîòíûé ïåðåêëþ÷àòåëü óñòàíîâèòå
â ïîëîæåíèå «OFF».
ÂÍÈÌÀÍÈÅ! Âî èçáåæàíèå ïîðàæåíèÿ ýëåêòðè÷åñêèì òîêîì ïðè ñìåíå
ôóíêöèè è äèàïàçîíà ðàáîò óáåäèòåñü, ÷òî òåðìîïàðà âûíóòà èç ðàçú¸ìà
ïðèáîðà.
Ïðîâåðêà öåëîñòíîñòè öåïè (çâóêîâàÿ ïðîçâîíêà)
Âñòàâüòå ðàçú¸ì òåñòîâîãî ùóïà ÷¸ðíîãî öâåòà â ãíåçäî «ÑÎÌ»,
à ðàçú¸ì òåñòîâîãî ùóïà êðàñíîãî öâåòà – â ãíåçäî «V WmA».
Óñòàíîâèòå ïîâîðîòíûé ïåðåêëþ÷àòåëü â ïîëîæåíèå .
Ïîäñîåäèíèòå ùóïû ê äâóì òî÷êàì èññëåäóåìîé ñõåìû. Åñëè
ñîïðîòèâëåíèå ìåíüøå, ÷åì 50 Îì, ïðîçâó÷èò çâóêîâîé ñèãíàë.
Ïî îêîí÷àíèè ðàáîò ïîâîðîòíûé ïåðåêëþ÷àòåëü óñòàíîâèòå
â ïîëîæåíèå «OFF».
Ïðîâåðêà äèîäîâ
Âñòàâüòå ðàçú¸ì òåñòîâîãî ùóïà ÷¸ðíîãî öâåòà â ãíåçäî «ÑÎÌ»,
à ðàçú¸ì òåñòîâîãî ùóïà êðàñíîãî öâåòà – â ãíåçäî «V WmA». Ïîëÿðíîñòü
êðàñíîãî ùóïà ñ÷èòàåòñÿ ïîëîæèòåëüíîé.
Óñòàíîâèòå ïåðåêëþ÷àòåëü ôóíêöèé â ïîëîæåíèå « / ».
Ïîäêëþ÷èòå êðàñíûé ùóï ê àíîäó äèîäà, à ÷¸ðíûé ùóï – ê êàòîäó.
Ñ÷èòàéòå ñ äèñïëåÿ ïðèáëèçèòåëüíî ïðÿìîå ïàäåíèå íàïðÿæåíèå íà
äèîäå ïðè ïðîòåêàíèè ÷åðåç íåãî ïðÿìîãî òîêà. Åñëè ïîëÿðíîñòü äèîäà
ÿâëÿåòñÿ îáðàòíîé, òî íà äèñïëåå áóäåò îòîáðàæàòüñÿ öèôðà «1» â ëåâîì
ðàçðÿäå.
Ïî îêîí÷àíèè ðàáîò ïîâîðîòíûé ïåðåêëþ÷àòåëü óñòàíîâèòå
â ïîëîæåíèå «OFF».
Ïðîâåðêà òðàíçèñòîðîâ
Óñòàíîâèòå ïåðåêëþ÷àòåëü íà ïîëîæåíèå «hFE».
Îïðåäåëèòå òèï òðàíçèñòîðà NPN èëè PNP è îïðåäåëèòå âûâîäû
ýìèòòåðà, áàçû è êîëëåêòîðà. Âñòàâüòå òðàíçèñòîð â ñîîòâåòñòâóþùèå
îòâåðñòèÿ ðàçú¸ìà íà ïåðåäíåé ïàíåëè: «Å» – ýìèòòåð, «Â» – áàçà, «Ñ» –
êîëëåêòîð òðàíçèñòîðà.
Ñ÷èòàéòå ñ äèñïëåÿ ïðèáëèæ¸ííîå çíà÷åíèå hFE ïðè òîêå áàçû 10 ìêÀ
è íàïðÿæåíèè Vce 2,8 Â.

11
Ïî îêîí÷àíèè ðàáîò ïîâîðîòíûé ïåðåêëþ÷àòåëü óñòàíîâèòå
â ïîëîæåíèå «OFF».
ÂÍÈÌÀÍÈÅ! Ïåðåä ïðîâåðêîé òðàíçèñòîðà èçâëåêèòå ùóïû èç ãíåçä
ìóëüòèìåòðà.
Ãåíåðàòîð ñèãíàëà (òîëüêî äëÿ ìîäåëè Ì832)
Âñòàâüòå ðàçú¸ì òåñòîâîãî ùóïà ÷¸ðíîãî öâåòà â ãíåçäî «ÑÎÌ»,
à ðàçú¸ì òåñòîâîãî ùóïà êðàñíîãî öâåòà – â ãíåçäî «V W mA». Ïîëÿðíîñòü
êðàñíîãî ùóïà ñ÷èòàåòñÿ ïîëîæèòåëüíîé.
Óñòàíîâèòå ïåðåêëþ÷àòåëü äèàïàçîíîâ â ïîëîæåíèå « ».
Ìåæäó ãíåçäàìè «V W mA» è «COM» ïîÿâèòñÿ ñèãíàë ÷àñòîòîé
50 Ãö ïðÿìîóãîëüíîé ôîðìû (ìåàíäð). Âûõîäíîå íàïðÿæåíèå
ïðèáëèçèòåëüíî ðàâíî 5 Â è ñîäåðæèò êîìïîíåíòó ïîñòîÿííîãî
íàïðÿæåíèÿ, òàê ÷òî ñëåäóåò èñïîëüçîâàòü ðàçäåëèòåëüíóþ åìêîñòü.
Ïî îêîí÷àíèè ðàáîò óäàëèòå ïåðåõîäíèê èç ãí¸çä ìóëüòèìåòðà.
Îòêëþ÷èòå ìóëüòèìåòð êíîïêîé îòêëþ÷åíèÿ (ïîëîæåíèå «OFF»).
ÂÍÈÌÀÍÈÅ!
– Ñèãíàë ÿâëÿåòñÿ âûõîäíûì.
– Ñõåìà íå çàùèùåíà îò êîðîòêîãî çàìûêàíèÿ.
– Íå äîïóñêàéòå â ýòîì ðåæèìå ïîäà÷è íà ùóïû íàïðÿæåíèÿ áîëåå 40 Â.
Çàìåíà áàòàðåè è ïðåäîõðàíèòåëÿ
Åñëè íà äèñïëåå ïîÿâèëñÿ ñèìâîë « », íåîáõîäèìî çàìåíèòü
áàòàðåþ. Äëÿ çàìåíû áàòàðåè îòâåðíèòå âèíòû íà çàäíåé êðûøêå êîðïóñà,
îòêðîéòå êîðïóñ.
Óäàëèòå ñòàðóþ áàòàðåþ è óñòàíîâèòå íîâóþ, ñîîòâåòñòâóþùóþ
ñïåöèôèêàöèè: 9 Â òèï «ÊÐÎÍÀ» (NEDA 1604, 6F22). Óñòàíîâèòå íà ìåñòî
çàäíþþ êðûøêó êîðïóñà, çàâåðíèòå âèíòû.
ÂÍÈÌÀÍÈÅ!
– Ïåðåä îòêðûòèåì çàäíåé êðûøêè ìóëüòèìåòðà óáåäèòåñü,
÷òî ìóëüòèìåòð âûêëþ÷åí è ùóïû îòêëþ÷åíû îò ïðîâåðÿåìûõ óñòðîéñòâ.
– Ïðè óñòàíîâêå íîâîé áàòàðåè ñîáëþäàéòå ïîëÿðíîñòü.
– Ïðåäîõðàíèòåëü âûõîäèò èç ñòðîÿ òîëüêî â ñëó÷àå çíà÷èòåëüíîé
è äëèòåëüíîé ïåðåãðóçêè ïðèáîðà ïðè îøèáî÷íîì âûáîðå äèàïàçîíîâ
èçìåðåíèÿ.

12
Äëÿ çàìåíû ïðåäîõðàíèòåëÿ âûêðóòèòå âèíòû íà çàäíåé êðûøêå
è îòêðîéòå åå, êàê è ïðè çàìåíå áàòàðåè. Çàìåíèòå ïðåäîõðàíèòåëü íîâûì,
ñîîòâåòñòâóþùèì òèïó 500 ìA/250 Â. Çàêðîéòå êîðïóñ.
ÂÍÈÌÀÍÈÅ! Äëÿ ïðåäîòâðàùåíèÿ âîçãîðàíèÿ èñïîëüçóéòå
ïðåäîõðàíèòåëè ñî çíà÷åíèÿìè òîêà/íàïðÿæåíèÿ, àíàëîãè÷íûìè çíà÷åíèÿì
òîêà/íàïðÿæåíèÿ ïðåäîõðàíèòåëÿ, óñòàíîâëåííîãî íà çàâîäå.
Óòèëèçàöèÿ
Ìóëüòèìåòðû íå ïîäëåæàò óòèëèçàöèè â êà÷åñòâå áûòîâûõ îòõîäîâ. Äëÿ
óòèëèçàöèè ïåðåäàòü â ñïåöèàëèçèðîâàííîå ïðåäïðèÿòèå äëÿ ïåðåðàáîòêè
âòîðè÷íîãî ñûðüÿ â ñîîòâåòñòâèè ñ çàêîíîäàòåëüñòâîì ÐÔ.
Èçâëåêèòå ýëåìåíò ïèòàíèÿ ïåðåä óòèëèçàöèåé ïðèáîðà. Ýëåìåíòû
ïèòàíèÿ âû ìîæåòå ñäàòü â ñïåöèàëèçèðîâàííûå ïðè¸ìíûå ïóíêòû ïî ìåñòó
æèòåëüñòâà, çàíèìàþùèåñÿ ñáîðîì òàêîãî âèäà îòõîäîâ.
Óñëîâèÿ òðàíñïîðòèðîâàíèÿ è õðàíåíèÿ
Òðàíñïîðòèðîâàíèå ìóëüòèìåòðîâ äîïóñêàåòñÿ ëþáûì âèäîì êðûòîãî
òðàíñïîðòà, îáåñïå÷èâàþùèì ïðåäîõðàíåíèå óïàêîâàííûõ ìóëüòèìåòðîâ
îò ìåõàíè÷åñêèõ ïîâðåæäåíèé, çàãðÿçíåíèé è âëàãè.
Òðàíñïîðòèðîâàíèå ìóëüòèìåòðîâ â ÷àñòè âîçäåéñòâèÿ ìåõàíè÷åñêèõ
ôàêòîðîâ îñóùåñòâëÿåòñÿ ïî ãðóïïå Ñ è Æ ÃÎÑÒ 23216
ïðè òåìïåðàòóðå îò ìèíóñ 10 äî ïëþñ 35 °C.
Õðàíåíèå ìóëüòèìåòðîâ îñóùåñòâëÿåòñÿ â óïàêîâêå èçãîòîâèòåëÿ
â ïîìåùåíèÿõ ñ åñòåñòâåííîé âåíòèëÿöèåé ïðè òåìïåðàòóðå îêðóæàþùåãî
âîçäóõà îò ìèíóñ 10 äî ïëþñ 45 °Ñ è îòíîñèòåëüíîé âëàæíîñòè íå áîëåå
80 %.
Ãàðàíòèéíûå îáÿçàòåëüñòâà
Ãàðàíòèéíûé ñðîê ýêñïëóàòàöèè ìóëüòèìåòðà – 1 ãîä ñî äíÿ
ïðîäàæè ïðè óñëîâèè ñîáëþäåíèÿ ïîòðåáèòåëåì ïðàâèë
ýêñïëóàòàöèè, òðàíñïîðòèðîâàíèÿ è õðàíåíèÿ. Ãàðàíòèÿ íå
ðàñïðîñòðàíÿåòñÿ
íà êîìïëåêòóþùèå – òåñòîâûå ùóïû, áàòàðåþ.
 ïåðèîä ãàðàíòèéíûõ îáÿçàòåëüñòâ è ïðè âîçíèêíîâåíèè
ïðåòåíçèé îáðàùàòüñÿ ê ïðîäàâöó èëè â îðãàíèçàöèè:
10 Ñâèäåòåëüñòâî î ïðè¸ìêå
Ìóëüòèìåòð öèôðîâîé ñåðèè UNIVERSAL èçãîòîâëåí â
ñîîòâåòñòâèè
ñ äåéñòâóþùåé òåõíè÷åñêîé äîêóìåíòàöèåé è ïðèçíàí ãîäíûì
äëÿ ýêñïëóàòàöèè.
Íîìåð ïàðòèè, ìåñÿö è ãîä èçãîòîâëåíèÿ èçäåëèÿ óêàçàíû íà
óïàêîâêå
â ãðàôàõ «ÏÀÐÒÈß» è «ÄÀÒÀ».
M830Â
M832
M838
Øòàìï ÎÒÊ ____________________
Äàòà ïðîäàæè __________________
Øòàìï ìàãàçèíà________________

13
DIGITAL MULTIMETER M830B, M832, M838, UNIVERSAL SERIES
Operating manual. Passport
TMD.U.003.1.C
Íàçíà÷åíèå è îáëàñòü ïðèìåíåíèÿ
Digital multimeters Ì830B, Ì832, Ì838 UNIVERSAL series of IEK
trademark (hereinafter referred to as multimeters) are professional devices
equipped with 3 ½ digits LCD display. Devices perform the following functions:
– measurement of DC strength ;
– measurement of DC voltage ;
– measurement of AC voltage ;
– measurement of electrical resistance ;
– measurement of capacitance of capacitors ;
– check of diodes and transistors testing ;
– check of circuit continuity (sound continuity test) ;
– temperature measurement ;
– generation of signals with the frequency of 50 Hz (square signal) .
Multimeters conform to the requirements of EN 61010-1 with regard to the
safety of devices and EN 61010-2-030 part security devices and EN 61326-1,
EN 61326-2-2 with regard to the electromagnetic compatibility.

14
Front panel elements are shown in the Figure 1.
1 – 3 ½ digits LCD, height of characters is 12.7 mm. Display shows
measurement results in digital form.
2 – Rotary range switch is used to select the functions and the limit of
measurement, as well as to enable/disable the device. The multimeter does not
operate when the switch is in the "OFF" position.
3 – Jack for hFE transistor amplification gain measurement.
4 – "10 A" input jack for connection of the positive polarity probe when
measuring current up to 10 A.
5 – «VWmA» input jack to connect the positive polarity probe when measuring
the voltage, resistance, current strength up to 200 mA.
6 – "COM" input jack to connect the negative polarity probe.
Figure 1 – Multimeters front panel elements
1
2
4
5
6
3

15
Technical characteristics
Main technical parameters are presented in the Table 1.
Table 1
Indicator
Value
Note
Maximum display indication
1 9 9 9
With automatic definition of polarity
Method of measurement
Dual-slope ADC
Measurement time
2–3 measurements per second
Overload indicator
Digit "1"
On the LCD
Polarity indicator
"–"
When negative polarity
Battery discharge indicator
" " character
On the LCD
Measurement category
II
Overload protection:
– "VWmA"
– "10A" input
500 mA/250 V fuse
Without fuse
Isolation of casing
Double, class II
Protection degree according to the IEC 60529
IP20
Operating temperature, °C
From 0 to +40
At a relative humidity of not more
than 80 %
Height above the sea level, m
2000
Supply voltage, V
9
"Krona" type battery (NEDA 1604, 6F22)
Dimensions, mm
126ґ70ґ24
Weight, g
150
With battery
Service life, years
10

16
Technical specifications of the multimeter M830B model are presented
in the Table 2.
Table 2
Function
Measurements limit
Accuracy
Constant voltage (V )
200 mV–2000 mV–20 V–200 V–1000 V
± 1.2 % ± 2 counts
AC voltage (V~ )
200–750 V
± 1.2 % ± 10 counts
DC (A )
200 µÀ–2000 µÀ–20 mÀ–200 mÀ–10 À
± 2.0 % ± 2 counts
Resistance (W)
200 Ohm–2000 Ohm–20 kOhm–
200 kOhm–2000 kOhm
± 1.0 % ± 2 counts
Diodes check ( )
2.8 V/1 mA
–
Transistors test (hFE)
0–1000
–
Functions:
Functions:
Technical specifications of the multimeter M832 model are presented in the
Table 3.
Table 3
Function
Measurements limit
Accuracy
Constant voltage (V )
200 mV–2000 mV–20 V–200 V–1000 V
± 1.2 % ± 2 counts
AC voltage (V~ )
200–750 V
± 1.2 % ± 10 counts
DC (A )
2000 µÀ–20 mÀ–200 mÀ–10 À
± 2.0 % ± 2 counts
Resistance (W)
200 Ohm–2000 Ohm–20 kOhm–
200 kOhm–2000 kOhm
± 1.0 % ± 2 counts
Diodes check ( )
2.8 V/1 mA
–
Transistors test (hFE)
0–1000
–

17
Technical specifications of the multimeter M838 model are presented in the
Table 4.
Table 4
Function
Measurements limit
Accuracy
Constant voltage (V )
200 mV–2000 mV–20 V–200 V–1000 V
± 1.2 % ± 2 counts
AC voltage (V~ )
200–750 V
± 1.2 % ± 10 counts
DC (A )
2000 µÀ–20 mÀ–200 mÀ–10 À
± 2.0 % ± 2 counts
Resistance (W)
200 Ohm–2000 Ohm–20 kOhm–
200 kOhm–2000 kOhm
± 1.0 % ± 2 counts
Diodes check ( )
2.8 V/1 mA
–
Transistors test (hFE)
0–1000
–
Temperature (°C)
From -20 up to 1370
± 1.5 % ± 2 counts
Functions:
Complete set
The scope of delivery of the multimeter is presented in the Table 5.
Table 5
Name
Quantity
Multimeter
1 Pcs.
Test probes
1 pair
9V battery
1 Pcs.
Operating manual. Passport
1 copy
Packing box
1 Pcs.
Optionally the scope of M838 clamp meter delivery includes a thermocouple
type "K": TP-01 – 1 Pcs.
Safety information
Measures to protect from electric shock
When working with the digital multimeter follow all the rules of work with the
device and safety instructions to avoid the risk of electric shock:
– do not use the multimeter if its casing is damaged. Pay special attention to
the connection jacks;
– use original probes for this model of multimeter;
– do not use defective probes, regularly check the isolation of probes, if
necessary, replace the probes with those of the same model or same electric
parameters;

18
– do not exceed the threshold values listed in the Table 6;
Function/measuring range limit
Maximum input signal
V /200 mV
250 V
V~ /200 mV
250 V~
V /20–1000 V
1000 V
V~ /200–750 V
750 V~
A /200 mA
200 mA/~
A~ /200 mA
A /10 A
10 À
– if the value of the measured parameter is not known beforehand, set the
maximum range;
– do not touch unused jacks when the meter is connected to a measured
circuit;
– do not use the multimeter when the back cover is not closed or the casing
is loosely closed;
– connect the test probe after connecting the basic one, disconnect them in
reverse order;
– do not measure the resistance in the circuit under tension;
– to avoid the risk of electric shock due to incorrect readings, replace the
battery immediately when the " " icon appears;
– always be careful when working with voltages over 42 V, when making
measurements keep your fingers behind the barrier edge of probes.
Measures to protect the multimeter against improper use
To avoid the damage to the multimeter, follow these guidelines:
– disconnect the power and discharge the high-voltage capacitors when
measuring the electrical resistance, checking the circuits integrity, diodes;
– use the jacks, functions and ranges of measurements in accordance with
the regulations;
– before turning the range switch to change functions and ranges of
measurement, disconnect the measuring probes from the tested circuit;
– when working with television receivers, monitors and pulsed power sources
remember that in some points of their electrical circuits there is a high voltage
pulse amplitude that can damage the multimeter;
– protect the multimeter from direct sunlight, high temperature and humidity.
Table 6

19
Safety symbols are presented in the Table 7.
Table 7
Important safety information. Before working with the device you must learn the manual and comply with
all the rules and recommendations of the manufacturer
High voltage is possible
AC (alternating current)
DC (direct current)
Grounding
Fuse
The device is protected with double insulation
Special disposal is required
Care and maintenance
ATTENTION! In the case of breaches of service regulations specified by the
manufacturer the protection of this device can be compromised.
If malfunctions or errors occur in the work of the multimeter immediately
discontinue its use. Check of work and repairs must be carried out in special
workshops.
Wipe the multimeter with a soft cloth, do not use abrasives or solvents for
cleaning. Electronic circuit of the multimeter does not need to be cleaned.
Storage after operation
During the storage after operation, please observe the following
recommendations:
– disconnect the test probes from the multimeter;
– make sure the meter and accessories dry;
– if for a long time, you are not going to use the multimeter, remove the
battery, otherwise it may leak and pull the device out of order.
How to work with multimeter
Measurement of DC strength
When measuring the current strength up to 200 mA, insert the connector
of black test probe in "COM" jack and insert the red test probe into the "VWmA"
jack. The polarity of the red probe is considered positive.
If you suspect that the measured current is within the range from 200 mA
to 10 A, you must insert the red probe into the "10 A" jack.
Use the rotary switch to select the desired limit of DC A .

20
Shut off the circuit to be measured and connect the test probes of the device
in series on load which is used to measure the current.
Read the indications of magnitude and polarity of the measured current
strength on the display.
Upon completion the work, set the rotary switch in the "OFF" position.
Notes.
– If the current value is not known beforehand, set the limits switch to the
position 10 A, and then, switching to smaller limits, adjust the required accuracy
of measurements.
– If the display shows only the digit "1" in the left digit, it means that there
is an overload and it is necessary to set the range switch to a higher volume.
Measurement of DC and AC voltage
Insert the connector of black test probe in "COM" jack and insert the
connector of red test the probe into "VWmA" jack. The polarity of the red probe
is considered positive.
With the use of the rotary switch select the desired limit of measurement
of DC V or AC voltage V~ .
Connect the test probes in parallel to the voltage source or load.
Upon completion the work, set the rotary switch in the "OFF" position.
Upon completion the work, set the rotary switch in the "OFF" position.
Notes.
– When setting the switch of limits to "600 V" position, "HV" and "7 " signs will
appear on the display, reminding of the work with high voltage. Caution is required.
– If the voltage is not known beforehand, set the switch of limits to the
position of maximum voltage, then, switching to smaller limits, adjust the required
accuracy of measurements.
– If the display shows only the digit "1" in the left digit, it means that there is
an overload and it is necessary to set the range switch to a higher volume.
Measurement of electrical resistance
Insert the connector of black test probe in "COM" jack and insert the
connector of red test the probe into "VWmA" jack. The polarity of the red probe
is considered positive.
Select the desired measuring range by setting the rotary switch to the
appropriate scale division "W", and connect the test probes to different ends of
the conductor to be measured.