Sanwa SP21, Instruction Manual, Page: 3 / 52

DRAWING No SP21 18-1805 2040 2040
CONTENTS
【 1 】 SAFETY PRECAUTIONS:Before use,read the following safety precautions
…… 2
1-1 Explanation of Warning Symbols …………………………… 2
1-2 Warning Instruction for safe use …………………………… 2
1-3 Maximum Overload Protection Input ……………………… 4
【 2 】 APPLICATION AND FEATURES
……………………………… 5
2-1 Application …………………………………………………… 5
2-2 Features ……………………………………………………… 5
【 3 】 NAME OF COMPONENT UNITS
……………………………… 6
【 4 】 SCALE READING
……………………………………………… 7
【 5 】 DESCRIPUTION OF FUNCTIONS
…………………………… 9
5-1 Knob and Adjuster …………………………………………… 9
5-2 How to Use the Stand ……………………………………… 9
【 6 】 MEASUREMENT PROCEDURE
……………………………… 11
6-1 Start-up Inspection …………………………………………… 11
6-2 How to Setup Range
（
Selection of a appropriate range
）
… 13
6-3 Preparation for Measurement ……………………………… 13
6-4 Voltage Measurement ……………………………………… 15
6-4-1 DCV Measurement （ ）
……………………………… 15
6-4-2 ± DCV Measurement （± DCV ）
…………………… 17
6-4-3 ACV Measurement （〜）
……………………………… 19
6-5 DCA Measurement （ ）
……………………………………21
6-6 Resistance Measurement （Ω）
……………………………23
6-7 Battery check …………………………………………………25
6-8 Checking Continuity （ ）
……………………………………27
6-9 Measuring Capacity
（μ
F
）
…………………………………29
6-10
DC High Voltage measurement
（
Optional HV Probe
）
……31
6-11 End of Measurement …………………………………………34
【 7 】 MAINTENANCE
…………………………………………………34
7-1 Maintenance and Inspection …………………………………34
7-2 Calibration………………………………………………………34
7-3 How to Replace Battery and Fuse …………………………35
7-4 Storage …………………………………………………………38
【 8 】 AFTER-SALE SERVICE
…………………………………………38
8-1 Repair …………………………………………………………38
8-2 For Information or Enquiries …………………………………40
8-3 Sanwa Web Site ………………………………………………40
【 9 】 SPECIFICATIONS
………………………………………………42
9-1 General Specification
…………………………………………42
9-2 Optional Accessories …………………………………………42
9-3 Measurement Range and Accuracy …………………………44