GW INSTEK GDM-452 [2/2] Gw kister
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GW INSTEK GDM-452 [2/2] Gw kister

GW INSTEK GDM-452 [2/2] Gw kister

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GW KISTER P N 82DM 45200M01 V Making Measurements Notice before operation 1 Power on the Multimeter and inspect 9V battery Replace the battery if S displays If not proceed into next step 2 Pay attention to rated voltage or current value next to A near input terminals any input that go beyond the rating may damage the Multimeter 3 Function switch shall be placed in required range before test 4 Instrument introduction A Notice 1 Set to the maximum range and reduce it gradually if the measured current is unknown 2 If 1 displays on LCD it indicates over range please select a higher range for your measurement 3 A indicates the maximum input current mA input is protected by 200mA 600Vfuse 10A 600V fuse is used to protect 10A range Measuring AC Current 1 Insert black test lead into COM jack and insert red one into mA jack if measured current is not more than 200mA insert red test lead into 10A jack if measured current is between 200mA and 10A 2 Place function switch at A range and connect testing leads to measurement loop in series LCD display POWER button HOLD button Function switch A Notice I n put jack 1 Please refer to Notice for DC current measurement G Measuring Resistance 1 Insert black test lead into COM jack and insert red one into ft jack 2 Place function switch at Q range and connect testing leads to measurement loop in series A Notice 1 Over range of 1 will be displayed if measured resistance exceeds the maximum value of selected range It is necessary to select higher range and reading cannot be stable until several seconds for resistance of more than 1M Q It is normal for high resistance reading Data Hold 1 Press HOLD button to realize such function 2 Whether the test leads are disconnected or not will not influence Data Hold function Auto Power Off 1 The Multimeter is designed with automatic power off circuit to power off after instrument operates for about 15 minutes and enter into sleeping status 2 Press POWER button twice to wake up the Multimeter from the sleep mode VI Maintenance A This kind of Multimeter belongs to precise electronic instruments Please do not alter wires randomly and pay attention to following items 1 Do not access to voltage which is higher than 600V DC or 600Vrms AC 2 Do not access to voltage signals when function switch is in position of current ranges Q and 3 Please do not use this meter before installing battery or tightening rear cover 4 Battery or fuse cannot be replaced until removing test leads and power off M VII Replacing the Battery 2 Instrument displays 1 if there is no input for open circuit etc Measuring DC Voltage 3 Be sure to power off measured wires and discharge capacitance load when inspecting wire impedance 1 Insert test leads into input jacks Red to V and black to COM 2 Set the function switch to V range Connect test leads to the wire under test in parallel and the positive polarity of the test end will indicate Measuring Capacitance A Notice 1 Connect the tested capacitor directly to the capacitance jacks 1 Set to the maximum range and reduce it gradually if the measured voltage is unknown 2 If 1 displays on LCD it indicates over range please select a higher range for your measurement 3 A indicates not to input voltage higher than 600V which may cause damage to the Multimeter or personal injury although the reading may be obtained 4 Extreme care should be taken to avoid electric shock when measuring high voltage Measuring AC Voltage 1 Insert black test lead into COM jack and insert red one into V jack 2 Place function switch at V range scope and then connect test leads to measurement wires in parallel Notice 1 Please refer to Notice for DC voltage 2 A refers to input voltage being not more than 600V The higher voltage is possible but it may cause damage to internal wires and electric shock Measuring DC Current 1 Insert black test lead into COM jack and insert red one into mA jack if measured current is not more than 200mA Insert the red test lead into 10A jack if measured current is between 200mA and 10A 2 Place function switch at A range and then connect testing leads to measurement loop in series It will dispaly current and polarity of red test lead at the same time 2 The floating reading exists every time you switch to another capacitance range and reset to zero before connecting to a tested capacitor which however will have no impact on the accuracy A Notice 1 Discharge the tested capacitor before measurement although the capacitance ranges are protected internally it may also cause damage to the multimeter 2 Reading stabilizing period is required when measuring large capacitance 3 Unit 1pF 10 6pF 1nF 10 3pF Measuring Frequency 1 Insert red test leads into HZ jack and insert black one into COM jack 2 Place function switch at kHZ range and connect test leads to frequency signal in series Frequency value can be read from display directly W Accessories 1 User s Manual 2 Test Leads 1 pc 1 pair A Note The accuracy cannot be ensured if input signal voltage is higher than 30Vrms and please take extreme care Testing Diodes and Continuity 1 Insert black test lead into COM jack and insert red one into VQ jack with polarity for red probe place function switch at gear and connect test leads to measured diode Reading is approximate positive drop for diode 2 Connect test leads to 2 ends of measurement wires Embedded buzzer rings if resistance between 2 ends is less than 30 Q This manual contains proprietary information which is protected by copyright All rights are reserved No part of this manual may be photocopied reproduced or translated to another language without prior written consent of Good Will company The information in this manual was correct at the time of printing However Good Will continues to improve products and reserves the rights to change specification equipment and maintenance procedures at any time without notice Good Will Instrument Co Ltd No 7 1 jhongsing Rd Tucheng Dist New Taipei City 236 Taiwan

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