YF-303
Analog Multimeter

  • transistor tester
  • circuit tester

APPLICATION

•ındication of zero correction:
 Before measuring, place the pointer on zero position of the scale left by adjusting the screw of zero corrector.
•Range selection:
 When measuring an unknown value of voltage or current, start from the highest range, then adjust to a proper lower range. Measurement is more accurate as near to the full scale, for resistance measurement, near to the middle scale.
•OFF range:
 After measurement place range selector to OFF range. This is to prevent pointer from swaying and to protect multitester.

FEATURES

  • Core magnet movement:
  • Avoids interruption of external magnetic field.
  • Double protection device:
  • Diode to protect movement，fuse to protect parts of circuit board.
  • Handy stand attached，with wide visual for easy readout.
  • With DC 12A measuring range.

SPECIFICATIONS

  • Dimensions: 146(L) x 98 (W) x 37mm (H)
  • Weight: about 255 g(including batteries).
  • Power supply: 006P 9V 1pc, 1.5V/UM3 batteries *2.
  • Operating temperature and humidity: 0℃~40℃,0%~80% RH.
  • Fuse:5Ø*20mm 0.5A 1pc.
MEASUREMENT RANGES AND PERFORMANCE
As a transistor tester
Leakage current
(iceo)(LI)
0-150μA atx1K range
0-15mA atx10 range
0-150mA atx1 range
±5% of arc
Current across terminals
DC current
amplification factor(hFE)
0~1000 at x 10 range
±3% of arc
With connector extra
As a circuit tester
Measurement
Measurement ranges
Allowance
Remarks
DC Voltage
(DCV)
0-0.3V-3V-12V-
30V-120V-300V-1200V
Battery 1.5VCheck 0-1.5V
±3% fs
Input impedance 20KΩ/V
AC Voltage
(ACV)
0-6V-30V-120V-300V-1200V
±4% fs
Input impedance 8KΩ/V
DC Current
(DCmA  A)
0-0.06m A(60μA)-3m A-
30m A-0.3A-12A，
0.06m A at 0.3V DC position
±3% fs
Voltage drop 300m V
Resistance
(Ω)
 •Range
x1-x10-x1K-x10K
 •Minimum
 0.2-2-200-2Ｋ(Ω)
 •Midscale
 20-200-20K-200K(Ω)
 •Maximum
 2K-20K-2M-20M(Ω)
±3% of arc
Internal
batteries
UM-3×2 006Px1
AF output
(dB)
 -10dB-+17dB at AC6V   position 0dB/0.775V
(1mW through 600Ω)
-10dB-+63dB
(ACV all ranges)
±4% fs
8KΩ/V for
out put terminal