25 Vchek Input Resistance

Electrical Components on Main PCA Table 2-1. Electrical Components on Main PCA Input Divider and Ohms Reference Resistor Network J2 Input Receptable Voltage Sense Resistor J1 Input Receptable Voltage Sense Resistor Reference Voltage for Volts Measurements AC to DC Converter AC Coupling Capacitor VCHEK input Positive Temp. Coef. Thermistor On Off and VCHEK Select Slide Switch When low (VSS), data from addressed register can be read. Negative power supply voltage (-3V relative to...

35 Calibration

To ensure that the meter performs to specifications, calibrate it annually using the following procedure 1. Set the calibrator for 0V dc. Put the meter in the 4.000V dc range. 2. Connect the calibrator to the + and COM jacks on the Meter. 3. Apply an input of +4.000V dc + -0.25 The meter display should read between 3.997-4.003V. If it does not, adjust R4 (see Figure 3-3) as follows. 1. Remove any input signals to the meter. 2. Remove the four screws on the back and separate the case bottom and...

Multimeter Safety

The Fluke 10, 11, 12 Multimeters have been designed and tested according to IEC Publication 348, Safety Requirements for Electronic Measuring Apparatus. This manual contains information and warnings which must be followed to ensure safe operation and retain the meter in safe condition. Use of this equipment in a manner not specified herein may impair the protection provided by the equipment. These mutimeters comply with part 15 of the FCC Rules. Operation is subject to the following two...

21 Introduction

Section 2 provides a basic theory of operation for the Series 10 Multimeters. Electrical components on the printed circuit assembly (A1 Main PCA) are listed in Table 2-1. Refer to Figure 4-2 for the location of these components and Figures 4-3 through 4-5 for the schematic diagrams. The analog digital IC (U1) implements the electrical measurement functions. See Table 2-2 for pin names and descriptions. The microcomputer (U2) controls U1, the LCD (U3), and the user interface. Discrete components...

42 How To Obtain Parts

Electrical components may be ordered directly from the manufacturer by using the manufacturers part number, or from the John Fluke Mfg. co., Inc. and its authorized representatives by using the part number under the heading FLUKE STOCK NO. In the U.S. order directly from the Fluke Parts Dept. by calling 1-800-526-4731. Parts price information is available from the John Fluke Mfg. Co., Inc or its representatives. Prices are also available in a Fluke Replacement Parts Catalog which is available...

32 Disassembly and Reassembly

Assembly Kamera Samsung S630

TO AVOID ELECTRICAL SHOCK, REMOVE TEST LEADS AND ANY INPUT SIGNALS BEFORE OPENING THE CASE. To avoid contamination from the fingers, handle the pca by the edges or wear gloves. PCA contamination can cause failures in humid environments. This meter contains components that can be damaged by static discharge. To avoid damaging these components when servicing the meter, take precautions indicated on the Static Awareness at the beginning of Section 3. Referring to Figure 3-1 as necessary,...