Frequency/Duty Cycle; Specifications; General Specifications; Technical Specifications - MAC TOOLS EM720C Notice D'instructions

4.9 Frequency/Duty Cycle

1. Insert the red test lead in the "INPUT" jack and the black lead in
the "COM" jack.
2. Move the rotary switch to the "Hz%" position. Connect the test
leads across the circuit to be measured.
3. Read measured resistance on the display.
4. Read measured duty cycle on the display.

SPECIFICATIONS

5.1 General Specifications

• Safety rating: CAT III 600V
• Max. operating altitude: 2000m
• Operating temperature: 0~40°C, <80% RH
• Storage temperature: -10~60°C, <70% RH (battery removed)
• Coefficient: 0.1 accuracy/°C
• Max. voltage between terminals and ground: 600V DC or AC rms
• Sample rate: Approx. 3 times/sec
• Display: digit LCD (max. display: 5999/1999 (Resistance))
• Over-range indication: Display only shows "OL"
• Low battery indication: When battery voltage drops below operating
voltage,
«
• Polarity indication: automatically displays "-"
• Power: 3x 1.5V AAA batteries
• Dimensions: 215mmX79mmX39mm
• Weight: 195g
• Max. jaw opening: 26mm

5.2 Technical Specifications

Accuracy: ±(% of reading + digits), 1 year warranty.
Ambient temp: 18°C~28°C, humidity: <75%.
Temperature coefficient: 0.1accuracy/°C
12
symbol appears on the display
»
(0°C~18°C or 28°C~40°C).
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