User`s Manual (PDF 324K)
Contents
1. y A 457 G4 General Technologies Corp 1 SAFETY RULES e This meter is designed for indoor use at temperatures between 0 C to 40 C and altitudes up to 2 000m To ensure that the meter is used safely follow all safety and operating instructions in this operation manual If the meter is not used as described in this operation manual the safety features of this meter might be impaired Do not use the meter if the meter or test leads look damaged or if you suspect that the meter is not operating properly When using the instrument keep your fingers behind the finger guards on the plastic casing and probes Disconnect the live test lead before disconnecting the common test lead Make sure power is off before cutting desoldering or breaking the circuit wires Small amounts of current can be dangerous Do not apply more than 600 VDC or 600V AC rms between a terminal and ground To avoid electrical shock use CAUTION when working above 60V DC or 25V AC rms Such voltages pose a shock hazard e Never make measurements with the battery cover off To avoid electrical shock or damage to the meter do not exceed the input limits 2 INTERNATIONAL SYMBOLS Important information Dangerous Voltages see manual Continuity AC Ground DC E Double Insulation 3 TECHNICAL SPECIFICATIONS 3 1 General Specifications Display 3 1 2 digits LCD max of 1999 display Polarity Automatic negative polarity indication Zero adjust2. 5 Function Range Switch 3 6 Temperature function r i 7 Resistance function i 8 Temperature probe socket 5 TE 9 Input and common connector O 10 DC Voltage function 6 1 1 AC Voltage function DWELL 13 12 DC Current function Or a 13 Dwell function ae 4 2 Measurement Procedures A CAUTION Maximum Input Voltage is 6 00Vrms do not exceed this rating to avoid personal injuries or damage to the instrument The range FUNCTION RANGE switch should be set to the range you want to test before the operation CAUTION Always ensure that the correct terminals are used for the type of measurement to be made Avoid making connections to live circuits whenever possible When making current measurements en sure that the circuit is not live before opening it in order to connect the test leads 4 2 1 DC Voltage measurement e Connect the black test lead to the COM socket and red test lead to the V Q socket e Set the FUNCTION RANGE switch to the desired range in the V function If the voltage range is not known beforehand set the switch to the highest range and work down as needed e Connect the test leads across the source or load under measurement e The measurement and polarity will be shown the LCD Display when the probe are connected 4 2 2 AC Voltage measurement e Connect the black test lead to the COM socket and red test lead to the V
3. Q socket e Set the FUNCTION RANGE switch to the desired range in the V function e Connect the test leads across the source or load under measurement e The measurement will be shown in the LCD Display when the probe are connected 4 2 3 DC Current measurement e Connect the black test lead to the COM socket and red test lead to the A input connector e Set the FUNCTION RANGE switch to the A function e Connect the test leads in series with the source or load under measurement e The measurement and polarity of the current will be shown the LCD Display when the current is flowing through the instrument 4 2 4 Resistance measurement CAUTION Maximum Input Voltage for this function is 250 Vrms for less than 10 Sec do not exceed this rating to avoid personal injuries or damage to the instrument Also ensure there is no power applied to the component or circuit and all capacitors are discharged e Connect the black test lead to the COM socket and red test lead to the V Q socket e Set the FUNCTION RANGE switch to the desired range in the Q function If the resistancege range is not known beforehand set the switch to the highest range and work down as needed e Connect the test leads across the componet or circuit under measurement e The measurement will be shown in the LCD Display when the probe are connected 4 2 5 Tach RPM Measurement CAUTION Maximum Input Vo
4. polarity from the diagram on the label inside the battery compartment e Reinstall the battery cover and tighten the securing screw 5 2 Fuse replacement e Remove the screw of the back Battery Cover back of the case and remove the battery e Remove the screws at the bottom of the case and of the battery compartment e Replace new fuse only with the identical type and rating F2 10A Type IEC60127 2 orUL248 14 6 3x25 4mm fast acting fuse rated at 10A 250V e Reinstall the back cover and replace the four screws e Reinstall the battery observing the polarity on the battery compart ment label the battery cover and tighten the securing screw 5 3 Cleaning Periodically wipe the case with a soft damp cloth and mild household cleanser Do not use abrasives or solvents Ensure that no water gets inside the instrument to prevent possible shorts and damage 6 WARRANTY One year limited warranty excluding batteries and fuses For de tails see Standard Warranty Information in our webpage or request a printed copy General Technologies Corp 121 7350 72nd Street Tel 604 952 6699 Fax 604 952 6690 www generaltechnologies net Delta BC Canada V4G 1H9 Copyright 2001 General Technologies
5. thermocouple probe connector into the Temperature socket observing the polarity of the connector and socket e When the Function Range switch is set to the TEMP position and no external thermocouple is connected the meter will automatically measure ambient temperature 4 3 Other Functions 4 3 1 Diode Continuity test CAUTION Maximum Input Voltage for this function is 250 Vrms for less than 10 Sec do not exceed this rating to avoid personal injuries or damage to the instrument Also ensure there is no power applied to the diode e Connect the black test lead to the COM socket and red test lead to the V Q socket e Set the FUNCTION RANGE switch to the 2000 gt within the Q function e For diode testing proceed to connect the test leads across the diode observing the polarity red probe to the anode of the diode and black test lead to the cathode e For continuity test proceed to connect the test leads across the circuit or component the buzzer will sound if the circuit resistance is below 100Q 5 MAINTENANCE CAUTION Before attempting battery removal or replacement disconnect test leads and remove the instrument from any energized circuit to avoid shock hazard 5 1 Battery Replacement e To replace the battery remove the screw of the back Battery Cover back of the case and remove the battery e Replace with a new 9 V alkaline battery tyoe NEDA 1604 or IEC6F22 observing the proper
6. ltage for this function is 250 Vrms for less than 10 Sec do not exceed this rating to avoid personal injuries or damage to the instrument e Connect the black test lead to the COM socket and red test lead to the V Q socket e Set the FUNCTION RANGE switch to the corresponding number of cylinders of the engine to test in the TACH function e Connect the black test lead to to the vehicle ground or negative terminal of the battery and the red test lead to the breaker point of the distributor or negative terminal of the ignition coil e The RPM will be shown in the LCD Display when the engine is running 4 2 6 Dwell Angle Measurement CAUTION Maximum Input Voltage for this function is 250 Vrms for less than 10 Sec do not exceed this rating to avoid personal injuries or damage to the instrument e Connect the black test lead to the COM socket and red test lead to the V Q socket e Set the FUNCTION RANGE switch to the corresponding number of cylinders of the engine to test in the Dwell function e Connect the black test lead to to the vehicle ground or negative terminal of the battery and the red test lead to the breaker point of the distributor or negative terminal of the ignition coil e The Dwell angle will be shown in the LCD Display when the engine is running 4 2 6 Temperature Measurement e Set the FUNCTION RANGE switch to the TEMP position e Connect the K type
7. ment Automatic Sample rate 0 5 Sec Over range indication 1 or 1 is displayed Power 9 volt battery type NEDA 1604 IEC6F22 Battery life Approx 50 hours w alkaline batteries Dimension 5 55 x2 71 X1 41 or 141x 69x36 mm Weight Approx 6 7 Oz or 190g with battery Accesories User s Manual Test Leads Protective Holster Soft Pouch K type temperature probe and 9V battery 3 2 Electrical Specifications e Accuracies are of reading number of least significant digits at 23 C 5 C less than 75 RH Ranae Renae Input Overload g y Impedance Protection DC Voltage 20v 600V om o 600 Vp p AC Voltage 600V 1 5 5 450 KQ 40 400Hz 600 Vp p Fuse 3 2V Resistance 1 5 5 max test Voltge 500 to 10000 0 8 2 250 Vp p 0 8 2 Test time 20 Sec 250Vp p CT8025 Automotive Digital Multimeter Rande Acciai Input Overload g y Impedance Protection 32 to 104 F 3 0 1 Built in Sensor Temperature R F Version 40 to 752 F 0 75 3 K Type Thermocouple 752 to 1832 F 3 0 10 Probe Dwell Angle ety i 1 5 2 0 1 Resoultion 250 Vp p Continuity Buzzer sounds when lt 100Q Test Voltage 2 4 V Max 250 Vrms Diode Test Test Current 1 0 0 6mA Test Voltage 2 4 V Max 250 Vrms 4 OPERATION 4 1 Instrument Description 1 Case 4 2 3 1 2 Digit LCD display 3 Power OFF position 4 Tachometer function
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