Ht-instruments HT21 Manual do Utilizador

 Copyright HT ITALIA 2010 Release EN 1.01 - 19/01/2011 ENGLISH User manual

HT21 EN - 94.3.3. Resistance and Continuity Test measurements CAUTION Before taking resistance measurements in circuit remove power from th

HT21 EN - 104.3.4. Diode test CAUTION Before taking diode test measurements in circuit remove power from the circuit being tested and discha

HT21 EN - 114.3.5. Frequency and Duty Cycle measurements CAUTION The maximum input for AC voltage is 250V. Do not attempt to measure higher

HT21 EN - 124.3.6. Capacitance measurement CAUTION Before taking capacitance measurement in circuit remove power from the circuit being test

HT21 EN - 135. MAINTENANCE 5.1. GENERAL INFORMATION This is a precision instrument. To guarantee its performances be sure to use it according t

HT21 EN - 146. TECHNICAL SPECIFICATIONS 6.1. TECHNICAL FEATURES The accuracy is calculated as [%reading + (number of digits)*resolution]. It is

HT21 EN - 15Duty cycle (Autorange) Range Resolution Accuracy Sensibilità Overload protection0.1%-99% 0.1% (1.2%rdg + 2dgt) >8Vrms 250VDC

HT21 EN - 167. SERVICE 7.1. WARRANTY CONDITIONS This instrument is guaranteed against material or production defects, in accordance with our ge

HT21 EN - 1Table of Content: 1. SAFETY PRECAUTIONS AND PROCEDURES ... 2 1.1. Prelimin

HT21 EN - 21. SAFETY PRECAUTIONS AND PROCEDURES This meter is compliance with safety Standard IEC/EN61010-1 related to electronic measuring in

HT21 EN - 31.2. DURING USE Read the recommendations which follow and the instructions in this manual: CAUTION An improper use may damage the

HT21 EN - 42. GENERAL DESCRIPTION The HT21 meter performs, in completely Autorange, the herewith measurements:  DC Voltage  AC sine voltage

HT21 EN - 54. OPERATING INSTRUCTIONS 4.1. INSTRUMENT DESCRIPTION 4.1.1. Front panel description LEGEND: 1. LCD 2. Rotary selector 3. COM in

HT21 EN - 64.2. DESCRIPTION OF FUNCTION KEYS 4.2.1. HOLD/ key By pressing HOLD/ key the measured value is frozen on the display where the sy

HT21 EN - 74.3. MEASUREMENTS 4.3.1. DC Voltage measurement CAUTION The maximum input for DC voltage is 600V. Do not attempt to measure hi

HT21 EN - 84.3.2. AC Voltage measurement CAUTION The maximum input for AC voltage is 600V. Do not attempt to measure higher voltages to avo