PDF《差动测试棒》

5 DP-30HS Instruction Manual 10. REPAIR Maintenance, repairs under or out of guarantee. Please return to product to your distributor.

6 DP-30HS Instruction Manual DP-40LV Differential Probe (Low Voltage Model) DP-40LV LOW VOLTAGE DIFFERENTIAL PROBE

8 1. FEATURES The DP-40 differential voltage probe provides a safety means of measuring floating potentials for all models of oscilloscopes incomplete safety. It converts the high differential voltage (Q 650V peak) into a low voltage (Q 7.0V) with reference to the earth for display on the oscilloscopes. The BNC output is designed to operate on an input with an impedance of

1 MΩ. It is

2 times of the

50 Ω. Recommend to use PINTEK PL-10 with DP-40, and expand the measuring ranges. From DMM can observe more exact measured testing voltage. (Oscilloscope accuracy is 3%, and DMM is

10 times). 2. SPECIFICATIONS (1) Bandwidth: DC - to

40 MHz (-3 dB) for x 20, x

100 DC - to

20 MHz (for attenuation x 10) (2) Attenuation: x 10, x 20, or x

100 (3) Accuracy: +/- 2% (4) Voltage Input Ranges (DC + AC peak to peak) Q +/-

65 V for x 10, (i.e about

23 V RMS or DC) Q +/-

130 V for x 20, (i.e about

46 V RMS or DC) Q +/-

650 V for x 100, (i.e about

230 V RMS or DC) (5) Permitted Max Input Voltage Max differential voltage:

650 V (DC + AC peak to peak) Max voltage between each input terminal and ground:

600 V RMS

9 (6) Input Impedance: Differential:

2 MΩ / 1.7 pF Between terminals and ground:

1 MΩ / 3.4 pF (7) Output: Q +/- 7.0 V (8) Output Impedance:

50 Ω (9) Rise Time:

9 ns for x 20, and x 100;

18 ns for x

10 (10) Rejection Rate on Common Mode:

60 Hz: >

82 dB ;

100 Hz: >

62 dB ;

1 MHz: >

52 dB (11) EXT. Power Supply: External

9 V DC power supply. (12) Consumption:

35 mA max (0.4 WATT) 3. PANEL DESCRIPTION Power ON/OFF Indication Attenuation Function Switch Low Power Indication Input Connector Output Connector External Power Source DP-40LV Instruction Manual

10 5. OPERATING PROCEDURE ! Connect to leads to the input and place the wire-grip on the circuit to be tested. ! Connect the probe to the oscilloscope with the insulated BNC/BNC lead. ! Adjust the vertical zero adjustment of the oscilloscope if necessary. ! Select the attenuation ratio* and the verti........