LG DM 332 free download

File name dm-332_cal.pdf

Adjustment and Test procedure Manual for digital multimeter Model: DM-332 LG Precision Co., Ltd. 1999/09/22 P/N: Adjustment and test procedure Manual DM-332 Revision History NO 1 Modification Test current error Correction(page 7 of 13) in DC Current Measurement ECN NO Date 1999/10/5 Name Yu Jong-Wook Created : 1999/09/20 Last Modified : 1999/10/5 Page 2 of 13 LG Precision Co., Ltd. Adjustment and Test procedure Manual DM-332 General Specifications of DM-332 Display: 3 3/4 Digit Multimeter Battery Life: Typical 200 hours Operating Temperature: 0єC ~ 40єC ( 80% RH) Storage temperature: -10єC ~ 60єC ( 70% RH) Accuracy guaranteed temperature: 23єC ± 5єC ( 80% RH) Maximum Reading Rate: 2 readings / second Explanation of each part of DM-332 Ёз Ёи Ёй Ёк LCD Display Power S/W Rotary S/W Used for selecting mode and range. Transistor Socket Used for inserting transistor to measure Ён Ём Ёл Terminal -V-mA-Hz Used for AC/DC voltage, Resistance, frequency and current measure terminal Terminal COM Used for common terminal Terminal 10A Used for measuring DC/AC current below 10A LCD Display Power S/W Rotary S/W Transistor Socket Terminal -V-mA-Hz Terminal COM Terminal 10A Fig 1 - Front View of DM-332 Note Adjustment and Test of DM-332 should be conducted under proper test environment. Check operating temperature and relative humidity before adjustment and test. Accuracy guaranteed temperature: 23єC ± 5єC (Below 80% RH) Created : 1999/09/20 Last Modified : 1999/10/5 Page 3 of 13 LG Precision Co., Ltd. Adjustment and Test procedure Manual l DM-332 Test Equipment List DMM Calibrator: 1set. Decade Capacitor: 1set. DC Power Supply (0 ~ 12V) or 9V Battery. Decade Resistor, Decad Capacitor : Each 1 set Signal Generator: 1set DMM (3 3/4 Digit) : 1set Created : 1999/09/20 Last Modified : 1999/10/5 Page 4 of 13 LG Precision Co., Ltd. Adjustment and Test procedure Manual l DM-332 Calibration Procedure 1. Power On Test Turn DM-332 on by using power S/W. and check LCD display is turned on. 2. Function Check 2-1. LCD Display Test Check LCD Display to each range by selecting range with Rotary S/W. Below chart shows correct display Function DC VOLTAGE AC VOLTAGE DC CURRENT AC CURRENT BAT HFE Capacitor Hz Diode Continuity Resistor LCD Display to each range 000.0mV 0.000V 00.00V 000.0V 0000V 000.0mV 0.000V 00.00V 000.0V 0000V 0.000mA 00.00mA 000.0mA 00.00A 0.000mA 00.00mA 000.0mA 00.00A 0.000V 00.00V 0000 00.00nF 000.0nF 0.000uF 00.00uF 00.00Hz More than 2.400V 400.0 400.0 4.000k 40.00k 400.0k 4000k 40.00M 2-2. MIN/MAX Function Test Check min/max display is set each time MIN/MAX button is pushed. 2-3. HOLD Function Test Check display is hold state when HOLD button is pushed. 2-4 Warning System Test Check Specification Buzzer Sound Insertion is not allowable Procedure Set other range with inserting a probe to 10A terminal on DC 10A range or AC 10A range. Insert a probe to 10A terminal on other range except DC 10A range or