Micsig DP Series High-Voltage Differential Probe Quick Guide
This guide provides essential information for using the Micsig DP Series High-Voltage Differential Probes, designed for accurate high-speed differential voltage measurements.
1. Overview
The Micsig DP Series High-Voltage Differential Probes offer selectable bandwidths ranging from 100MHz to 500MHz, with a maximum differential input voltage of 7000Vpk. A standard BNC interface ensures compatibility with all major oscilloscope brands. Built-in metal shielding enhances anti-interference performance. With a compact 2cm-thin design, the probes save workspace and feature one-click auto-zero for quick setup. Additional functions include overload protection alarms and power-off memory for seamless operation.
An ultra-low noise floor (as low as 5mVrms) and dual-range design optimize the signal-to-noise ratio across different voltage levels. A high-impedance input and low input capacitance minimize loading effects, delivering ±2% measurement accuracy and excellent common-mode rejection (CMRR).
The 5MHz bandwidth limit reduces high-frequency noise for accurate, high-speed differential voltage measurements. Ideal for EV power systems, solar inverters, switching power supplies, and floating or isolated high-voltage signal testing.
2. Characteristics
| Model | DP700 | DP702 | DP1500 | DP1502 | DP3000 | DP3002 | DP7000 | DP7002 |
| Bandwidth | 100MHz | 200MHz | 100MHz | 200MHz | 100MHz | 200MHz | 100MHz | 200MHz |
| Rise time | < 1.75ns | < 3.5ns | < 1.75ns | < 3.5ns | < 1.75ns | < 3.5ns | < 1.75ns | < 3.5ns |
| Accuracy | ±2% | ±2% | ±2% | ±2% | ±2% | ±2% | ±2% | ±2% |
| Max. input Differential Voltage (DC+AC PK) | 70V (20X) 700V (200X) | 150V (20X) 1500V (200X) | 300V (50X) 3000V (500X) | 300V (50X) 3000V (500X) | 700V (100X) 7000V (1000X) | 700V (100X) 7000V (1000X) | 7000Vpk | 7000Vpk |
| Max. Voltage to ground | 600V (CAT I) 1000V (CAT II) | 450V (CAT II) 600V (CAT III) | 1000V (CAT III) | 1000V (CAT III) | 1000V (CAT III) | 1000V (CAT III) | 1000V (CAT III) | 1000V (CAT III) |
| Noise | Full Bandwidth: 10X: 13mVrms, 100X: 25mVrms; 5MHz bandwidth limit: 10X: ≤ 5mVrms, 100X: ≤ 30mVrms | Full Bandwidth: 20X: 13mVrms, 200X: 25mVrms; 5MHz bandwidth limit: 20X: ≤ 10mVrms, 200X: 60mVrms | Full Bandwidth: 50X: 63mVrms, 500X: < 200mVrms; 5MHz bandwidth limit: 50X: 25mVrms, 500X: < 150mVrms | Full Bandwidth: 50X: 63mVrms, 500X: < 200mVrms; 5MHz bandwidth limit: 50X: 25mVrms, 500X: < 150mVrms | Full Bandwidth: 100X: 125mVrms, 1000X: ≤ 400mVrms; 5MHz bandwidth limit: 100X: ≤ 50mVrms, 1000X: ≤ 300mVrms | Full Bandwidth: 100X: 125mVrms, 1000X: ≤ 400mVrms; 5MHz bandwidth limit: 100X: ≤ 50mVrms, 1000X: ≤ 300mVrms | Full Bandwidth: 100X: 125mVrms, 1000X: ≤ 400mVrms; 5MHz bandwidth limit: 100X: ≤ 50mVrms, 1000X: ≤ 300mVrms | Full Bandwidth: 100X: 125mVrms, 1000X: ≤ 400mVrms; 5MHz bandwidth limit: 100X: ≤ 50mVrms, 1000X: ≤ 300mVrms |
| CMRR | DC: >-80dB; 100kHz: >-60dB; 10MHz: >-30dB; 100MHz: >-26dB | DC: >-80dB; 100kHz: >-60dB; 10MHz: >-30dB; 100MHz: >-26dB | DC: >-80dB; 100kHz: >-60dB; 10MHz: >-30dB; 100MHz: >-26dB | DC: >-80dB; 100kHz: >-60dB; 10MHz: >-30dB; 100MHz: >-26dB | DC: >-80dB; 100kHz: >-60dB; 10MHz: >-30dB; 100MHz: >-26dB | DC: >-80dB; 100kHz: >-60dB; 10MHz: >-30dB; 100MHz: >-26dB | DC: >-80dB; 100kHz: >-60dB; 10MHz: >-30dB; 100MHz: >-26dB | DC: >-80dB; 100kHz: >-60dB; 10MHz: >-30dB; 100MHz: >-26dB |
| Delay time | 11.7ns(10X) 11.1ns(100X) | 12.7ns(20X) 12.2ns(200X) | 12.1ns(50X) 11.5ns(500X) | 12.1ns(50X) 11.5ns(500X) | 12.2ns(100X) 12.3ns(1000X) | 12.2ns(100X) 12.3ns(1000X) | 12.2ns(100X) 12.3ns(1000X) | 12.2ns(100X) 12.3ns(1000X) |
| Input impedance | 5MΩ/2pF (differential) 2.5MΩ/4pF (each input to ground) | 10MΩ/2pF (differential) 5MΩ/4pF (each input to ground) | 20MΩ/1.2 pF (differential) 10MΩ/2.4pF (each input to ground) | 20MΩ/1.2 pF (differential) 10MΩ/2.4pF (each input to ground) | 60MΩ / 0.78pF (differential) 30MΩ / 1.6pF (each input to ground) | 60MΩ / 0.78pF (differential) 30MΩ / 1.6pF (each input to ground) | 60MΩ / 0.78pF (differential) 30MΩ / 1.6pF (each input to ground) | 60MΩ / 0.78pF (differential) 30MΩ / 1.6pF (each input to ground) |
| Output voltage | <7V | <7.5V | <6V | <6V | <7V | <7V | <7V | <7V |
| Output impedance | 1MΩ | 1MΩ | 1MΩ | 1MΩ | 1MΩ | 1MΩ | 1MΩ | 1MΩ |
| Power supply | DC 5V | DC 5V | DC 5V | DC 5V | DC 5V | DC 5V | DC 5V | DC 5V |
| Overrange | LED flashes, Buzzer beeps | LED flashes, Buzzer beeps | LED flashes, Buzzer beeps | LED flashes, Buzzer beeps | LED flashes, Buzzer beeps | LED flashes, Buzzer beeps | LED flashes, Buzzer beeps | LED flashes, Buzzer beeps |
| Dimensions | Control module: L*W*H: 91 *33*15/mm Signal box: L*W*H: 100*36*20/mm | Control module: L*W*H: 91 *33*15/mm Signal box: L*W*H: 100*36*20/mm | Control module: L*W*H: 91 *33*15/mm Signal box: L*W*H: 100*36*20/mm | Control module: L*W*H: 91 *33*15/mm Signal box: L*W*H: 100*36*20/mm | Control module: L*W*H: 91 *33*15/mm Signal box: L*W*H: 100*36*20/mm | Control module: L*W*H: 91 *33*15/mm Signal box: L*W*H: 100*36*20/mm | Control module: L*W*H: 91 *33*15/mm Signal box: L*W*H: 100*36*20/mm | Control module: L*W*H: 91 *33*15/mm Signal box: L*W*H: 100*36*20/mm |
| Cable length | Approx. 28 cm (Input); Approx. 135cm (Output) | Approx. 28 cm (Input); Approx. 135cm (Output) | Approx. 28 cm (Input); Approx. 135cm (Output) | Approx. 28 cm (Input); Approx. 135cm (Output) | Approx. 28 cm (Input); Approx. 135cm (Output) | Approx. 28 cm (Input); Approx. 135cm (Output) | Approx. 28 cm (Input); Approx. 135cm (Output) | Approx. 28 cm (Input); Approx. 135cm (Output) |
| Temperature | Operating: 0°C ~ 40 °C; Non-operating: -30 °C ~ 70 °C | Operating: 0°C ~ 40 °C; Non-operating: -30 °C ~ 70 °C | Operating: 0°C ~ 40 °C; Non-operating: -30 °C ~ 70 °C | Operating: 0°C ~ 40 °C; Non-operating: -30 °C ~ 70 °C | Operating: 0°C ~ 40 °C; Non-operating: -30 °C ~ 70 °C | Operating: 0°C ~ 40 °C; Non-operating: -30 °C ~ 70 °C | Operating: 0°C ~ 40 °C; Non-operating: -30 °C ~ 70 °C | Operating: 0°C ~ 40 °C; Non-operating: -30 °C ~ 70 °C |
| Humidity | Operating: 5~85% RH (0°C~40°C); Non-operating: 5%~85% RH (≤40°C); 5%~45% RH (40 °C~70°C) | Operating: 5~85% RH (0°C~40°C); Non-operating: 5%~85% RH (≤40°C); 5%~45% RH (40 °C~70°C) | Operating: 5~85% RH (0°C~40°C); Non-operating: 5%~85% RH (≤40°C); 5%~45% RH (40 °C~70°C) | Operating: 5~85% RH (0°C~40°C); Non-operating: 5%~85% RH (≤40°C); 5%~45% RH (40 °C~70°C) | Operating: 5~85% RH (0°C~40°C); Non-operating: 5%~85% RH (≤40°C); 5%~45% RH (40 °C~70°C) | Operating: 5~85% RH (0°C~40°C); Non-operating: 5%~85% RH (≤40°C); 5%~45% RH (40 °C~70°C) | Operating: 5~85% RH (0°C~40°C); Non-operating: 5%~85% RH (≤40°C); 5%~45% RH (40 °C~70°C) | Operating: 5~85% RH (0°C~40°C); Non-operating: 5%~85% RH (≤40°C); 5%~45% RH (40 °C~70°C) |
| Implementation standard | Q/MKX001-2023 | Q/MKX001-2023 | Q/MKX001-2023 | Q/MKX001-2023 | Q/MKX001-2023 | Q/MKX001-2023 | Q/MKX001-2023 | Q/MKX001-2023 |
| LVD standard | EN 61010-1:2010; EN IEC 61010-2-030:2021; EN 61010-031:2015+A1:2021+A11:2021 | EN 61010-1:2010; EN IEC 61010-2-030:2021; EN 61010-031:2015+A1:2021+A11:2021 | EN 61010-1:2010; EN IEC 61010-2-030:2021; EN 61010-031:2015+A1:2021+A11:2021 | EN 61010-1:2010; EN IEC 61010-2-030:2021; EN 61010-031:2015+A1:2021+A11:2021 | EN 61010-1:2010; EN IEC 61010-2-030:2021; EN 61010-031:2015+A1:2021+A11:2021 | EN 61010-1:2010; EN IEC 61010-2-030:2021; EN 61010-031:2015+A1:2021+A11:2021 | EN 61010-1:2010; EN IEC 61010-2-030:2021; EN 61010-031:2015+A1:2021+A11:2021 | EN 61010-1:2010; EN IEC 61010-2-030:2021; EN 61010-031:2015+A1:2021+A11:2021 |
| EMC standard | EN IEC 61326-1:2021; EN IEC 61326-2-1:2021; EN61000-3-2:2019+A1:2021; EN61000-3-3:2013+A1:2019+A2:2021 | EN IEC 61326-1:2021; EN IEC 61326-2-1:2021; EN61000-3-2:2019+A1:2021; EN61000-3-3:2013+A1:2019+A2:2021 | EN IEC 61326-1:2021; EN IEC 61326-2-1:2021; EN61000-3-2:2019+A1:2021; EN61000-3-3:2013+A1:2019+A2:2021 | EN IEC 61326-1:2021; EN IEC 61326-2-1:2021; EN61000-3-2:2019+A1:2021; EN61000-3-3:2013+A1:2019+A2:2021 | EN IEC 61326-1:2021; EN IEC 61326-2-1:2021; EN61000-3-2:2019+A1:2021; EN61000-3-3:2013+A1:2019+A2:2021 | EN IEC 61326-1:2021; EN IEC 61326-2-1:2021; EN61000-3-2:2019+A1:2021; EN61000-3-3:2013+A1:2019+A2:2021 | EN IEC 61326-1:2021; EN IEC 61326-2-1:2021; EN61000-3-2:2019+A1:2021; EN61000-3-3:2013+A1:2019+A2:2021 | EN IEC 61326-1:2021; EN IEC 61326-2-1:2021; EN61000-3-2:2019+A1:2021; EN61000-3-3:2013+A1:2019+A2:2021 |
3. Appearance
The DP differential probe consists of a control module and a signal box.
Control Module Diagram:
- Button Panel
- BNC signal output
- Cable to Signal Box
- 5MHz Limit LED Indicator
- 5MHz Bandwidth Limit Button
- Auto Zero Button
- Range LED Indicator
- Range Selection Button
Signal Box Diagram:
- Signal input: Negative
- Signal input: Positive
- Cable to Control Module
5. Operation Steps
- Power the probe using the standard adapter.
- Connect the BNC end of the probe to the oscilloscope channel (ensure the oscilloscope is grounded).
- Select the appropriate voltage range according to the signal.
- Connect the DUT (Device Under Test) using clips or hooks. If an over-voltage alarm occurs, disconnect the power supply and the circuit immediately.
- Set the oscilloscope: Set input impedance to 1MΩ and adjust the channel attenuation ratio.
*Note: Try not to use extension leads when measuring, as it could introduce more noise. If extension leads must be used, twist the leads together to reduce noise, and ensure the input frequency does not exceed 5MHz. Exceeding 5MHz may result in output errors.
6. Warranty
Micsig warrants the main body of this differential probe for 1 year from the date of purchase. Micsig will provide free maintenance for any failure caused by product quality issues under normal use during the warranty period.
Micsig reserves the right to refuse maintenance services or charge a fee under the following circumstances:
- Absence of packaging or anti-counterfeiting label.
- Alteration or blurring of the anti-counterfeit label.
- Unauthorized disassembly, including changing wires or dismantling internal components.
- Absence of a sales voucher or if the voucher content does not match the product.
7. Safety Precautions
- Non-professionals should not open the product casing.
- Do not use the product while the casing is open.
- Avoid touching any bare metal parts during testing.
- Disconnect the power supply and circuit immediately if an over-voltage condition is detected.
- Do not use the probe in flammable or explosive environments.
4. Precautions
- The oscilloscope's bandwidth should be no less than the probe's bandwidth, and the channel input impedance should be 1MΩ.
- Calibrate the probe before use: Short-circuit the input ends, power on, press the “Zero” button. The 5MHz LED light will flash. If a “Di” sound is heard, calibration is successful. If “Di Di Di” sounds are heard, calibration has failed, and the process needs to be repeated.
- For optimal accuracy, it is recommended to warm up the probe for 10 minutes before use.
- When the Range LED indicator flashes and beeps rapidly, it indicates an overvoltage warning. Please switch to a higher range.
