Sanwa EM7000, Инструкция по эксплуатации, Страница: 53 / 68

DRAWING No.EM7000 09-1306 2040 2040
— 49 —
Operating voltage for
Ω
range of this tester is 3 V, so lighting test
of LED can be performed. Appropriate range is
Ω
x 10 range.
For the
Ω
function, the measured current will be different largely
depending on the ranges used. Also, the resistance of a
semiconductor will vary largely depending on the intensity of the
measured current. Accordingly, even for the same semiconductor
(for instance, diode), the measured value will vary largely
depending on the ranges used.
If a test pin is touched by a finger during measurement ,
measurement will be influenced by the resistance in the human
body to result in measurement error.
Be sure to use the rated fuse (
φ 5 x 20, 500 mA/250 V, parts
No.F1176) for the instrument. In case a fuse other than the
rated one is used, indication errors may occur, and/or circuit
protection is become unable.
If the pointer does not move to 0 line even when the 0
Ω
adjuster is
turned fully, replace the internal batteries (R6P:1.5 V x 2) to
new ones.
The reading may vary because of external inductance when
measuring high resistance value.
1) Application
The probe is suitable for measuring voltage of high impedance
circuits, such as CRT anode voltage of TV sets.
6-8 DC High Voltage (HV) Measurement (Optional HV Probe)
Max. measurement value 30 kV DC
1. The probe are designed for the measurement of very small
direct current circuit. Never use the probe to measurement
high voltage in power lines, such as transmission and
distribution lines; it is very dangerous.
2. Never apply input signals that exceed 30kV.
3. Be sure to disconnect the test pins from the circuit when
changing the function/ range selector.
4. Always keep your fingers behind the finger guards on the
probe when making measurements.
WARNING
2) Measuring range:
HV PROBE
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