Description

The Micsig DP1500 probe is part of Micsig's new series of cost-effective differential probes. The Micsig DP series probes can be used with your conventionally grounded oscilloscope to measure floating signals of up to 3000 V differential and common mode voltage in 1000:1 mode.

The high voltage differential probe has a very low noise floor and excellent amplitude-frequency characteristics. This makes it easy for users to test high frequency and high voltage signals.

Due to the 5 MHz bandwidth limitation, the probe effectively eliminates high frequency noise when measuring the FET switching frequency in switching power supplies. The probe also has a quick zero function, an LED overvoltage alarm, a dual range selection that improves the signal-to-noise ratio and a standard BNC interface. The probe is powered via USB, using either an external USB power supply or the USB port of the oscilloscope.

Applications

Sliding measurements
High-voltage insulation measurements
Switching network designs
Power converter design
Inverters, UPS power supply
Welding and galvanising power supply
Electronic ballasts
Motor drive designs
Induction heating, induction cookers
CRT display design
Electrical appliances with low voltage
Experiments with electronic power and electric drives

Other functions

High accuracy, high CMRR

High input impedance and low input capacitance, minimised load effect, significantly improved accuracy of the differential signal. High common mode rejection capability, suitable for floating measurements of large common mode voltages at high frequencies.

CH1: @ 100 KHz, 207.7 V, output common mode signal amplitude 94.62 mV, CMRR > -60 dB

Low noise over the full bandwidth

To get an idea of the noise, short the input ends and connect them to channel 1. Set both attenuation ratios to 50X, the vertical scale to 250mV/div, the time base to 1ms and the input impedance to 1MΩ:

Noise: 40.62mV (RMS) at full bandwidth.

Excellent bandwidth flatness

The DP series probe has excellent bandwidth flatness and amplitude variations of less than 0.5dB within its half bandwidth range, high accuracy can be maintained even in high frequency bands.

Productvideo

Overview DP Series

Technical Data

Model	Accuracy (typical)	Bandwidth	Differential voltage (DC+AC peak) max.	Common mode rejection ratio (CMRR)	Input impedance
DP700	±2 % (optional 1 % accuracy)	100 MHz	70 V (20X) 700 V (200X)	DC: >-80 dB 100 kHz: >-60 dB 10 MHz: >-30 dB 100 MHz: >-26 dB	6 MΩ / 1.67 pF (differential) 3 MΩ / 3.3 pF (each input to ground)
DP1500	±2 % (optional 1 % accuracy)	100 MHz	150 V (50X) 1500 V (500X)	DC: >-80 dB 100 kHz: >-60 dB 10 MHz: >-30 dB 100 MHz: >-26 dB	13.2 MΩ / 1.67 pF (differential) 6.6 MΩ / 3.3 pF (each input to ground)
DP3000	±2 % (optional 1 % accuracy)	100 MHz	300 V (100X) 3000 V (1000X)	DC: >-80 dB 100 kHz: >-60 dB 10 MHz: >-30 dB 100 MHz: >-26 dB	30 MΩ / 0.78 pF (differential) 15 MΩ / 1.57 pF (each input to ground)
DP7000	±2 % (optional 1 % accuracy)	100 MHz	700 V (100X) 7000 V (1000X)	DC: >-80 dB 100 kHz: >-60 dB 10 MHz: >-30 dB 100 MHz: >-26 dB	120 MΩ / 0.78 pF (differential) 60 MΩ / 1.57 pF (each input to ground)
DP702	±2 % (optional 1 % accuracy)	200 MHz	70 V (20X) 700 V (200X)	DC: >-80 dB 100 kHz: >-60 dB 10 MHz: >-30 dB 100 MHz: >-26 dB	6 MΩ / 1.67 pF (differential) 3 MΩ / 3.3 pF (each input to ground)
DP1502	±2 % (optional 1 % accuracy)	200 MHz	150 V (50X) 1500 V (500X)	DC: >-80 dB 100 kHz: >-60 dB 10 MHz: >-30 dB 100 MHz: >-26 dB	13.2 MΩ / 1.67 pF (differential) 6.6 MΩ / 3.3 pF (each input to ground)
DP3002	±2 % (optional 1 % accuracy)	200 MHz	300 V (100X) 3000 V (1000X)	DC: >-80 dB 100 kHz: >-60 dB 10 MHz: >-30 dB 100 MHz: >-26 dB	30 MΩ / 0.78 pF (differential) 15 MΩ / 1.57 pF (each input to ground)
DP7002	±2 % (optional 1 % accuracy)	200 MHz	700 V (100X) 7000 V (1000X)	DC: >-80 dB 100 kHz: >-60 dB 10 MHz: >-30 dB 100 MHz: >-26 dB	120 MΩ / 0.78 pF (differential) 60 MΩ / 1.57 pF (each input to ground)
DP703	±2 % (optional 1 % accuracy)	300 MHz	70 V (20X) 700 V (200X)	DC: >-80 dB 100 kHz: >-60 dB 10 MHz: >-30 dB 100 MHz: >-26 dB	6 MΩ / 1.67 pF (differential) 3 MΩ / 3.3 pF (each input to ground)
DP1503	±2 % (optional 1 % accuracy)	300 MHz	150 V (50X) 1500 V (500X)	DC: >-80 dB 100 kHz: >-60 dB 10 MHz: >-30 dB 100 MHz: >-26 dB	13.2 MΩ / 1.67 pF (differential) 6.6 MΩ / 3.3 pF (each input to ground)
DP3003	±2 % (optional 1 % accuracy)	300 MHz	300 V (100X) 3000 V (1000X)	DC: >-80 dB 100 kHz: >-60 dB 10 MHz: >-30 dB 100 MHz: >-26 dB	30 MΩ / 0.78 pF (differential) 15 MΩ / 1.57 pF (each input to ground)
DP7003	±2 % (optional 1 % accuracy)	300 MHz	700 V (100X) 7000 V (1000X)	DC: >-80 dB 100 kHz: >-60 dB 10 MHz: >-30 dB 100 MHz: >-26 dB	120 MΩ / 0.78 pF (differential) 60 MΩ / 1.57 pF (each input to ground)