Bench Meterman BDM40 Návod k obsluze Strana 1

Bench Digital MultimeterOperator’s Manual Model BDM40 Bench Digital Multimeter

9 The light grey area around the ACV / DCV switch is extended up and to the right to enclose the five range values of the voltage function. Push the

10 PEAK VOLTAGES METERED VOLTAGEAC COMPONENT ONLYAC COUPLEDINPUT WAVEFORMPK -PK0 - PKRMS CALACTRUE RMSDCCOMPONENTONLYDC AND ACTOTAL RMSTRUE RMS =ac

11 Circuit loading error Connecting most voltmeters to a circuit may change the operating voltage of the circuit if it loads the circuit down. As lon

12 100.16 = 100.04 = = 10.01 mV = 10.00 mV The error will be about 0.01mV the

13 Maximum current error due to Burden Voltage BESEBE x 100% in−= BESEMIBE x100 Ampsmilli in−−= Examples: Es = 14V, RL = 9Ω, IM = 1497.mA, 0.749V

14 CALIBRATION WARNING THESE SERVICING INSTRUCTIONS ARE FOR USE BY QUALIFIED PERSONNEL ONLY. TO AVOID ELECTRICAL SHOCK, DO NOT PERFORM ANY SERVIC

15 4. Turn the instrument upside down as viewed from the front panel. 5. All adjustments necessary to complete the calibration procedure are now a

16 Table 4. Display Test SELECT RANGE DISPLAY 200Ω 00.00* 2kΩ .0000* 20kΩ 0.000 200kΩ 00.00 2000kΩ 000.0 20MΩ 0.000 *The least significant

17 Current Test Use the following procedure to verify proper operation of both the AC and DC mA measurement functions: 1. Select DC mA, 200µA r

18 DC Voltage Calibration On the UUT select DC V, 2V range, and connect the calibrator HI volts output to the V-Ω terminal and the calibrator LO volt

1 LIMITED WARRANTY AND LIMITATION OF LIABILITY Your Meterman product will be free from defects in material and workmanship for 90 days from the date

19 MAINTENANCE Changing Input Power Configuration This meter was shipped with power cords and fuses for 117V (USA) and 230V (European) operation.

20 Non-Warranty Repairs and Replacement – US and Canada Non-warranty repairs in the United States and Canada should be sent to a Meterman Test Tools S

21 ELECTRICAL: The electrical specifications apply for an operating temperature of 18°C to 28°C (64.4°F to 82.4°F), relative humidity up to 90%, and

22 * * Typically 3 to 5 digits of drift will be observed at full scale at 20Hz. Crest Factor Range: Waveforms with a Peak / RMS ratio of 1 :1 to 3:

Manual Revision C 09/03 Manual Part Number 1566418 Information contained in this manual is proprietary to Meterman Test Tools and is pro

2 NLE FOR UNITED KINGDOM ONLY NOTE: This lead/appliance must only be wired by competent persons WARNING: THIS APPLIANCE MUST BE EARTHED IMPORTANT:

3 INTRODUCTION This instrument is a line powered, bench-type digital multimeter with a 4-1/2 digit LED display. The DMM can measure AC/DC volts, AC

4 The LED Display The high-contrast 4-1/2 digit LED display is easily read from across the room. It can register from 0000 to 19999 counts. For ease

5 OPERATING GUIDELINES INTRODUCTION To use your multimeter fully, there are some additional factors to be considered, such as measurement tech

6 MEASUREMENT TECHNIQUES The information provided here describes techniques In measurement and interpretation of measurements that may extend the

7 Your instrument has a crest factor range of 1.0 to 3.0 at full scale. Going down from full-scale, the crest factor capability increases from 3.0 to:

8 the rise and fall time equals the slew rate of 1.75 µsec. To do this we will calculate the values for the theoretical signal with zero rise and fal