Description

The Micsig DP1501 probe is from Micsig's new series of low cost 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 comparison	Bandwidth	Differential voltage (DC+AC PK) Max.	CMRR	Input impedance
DP700	100 MHz	70V（10X） 700V（100X）	DC：>-80dB 100kHz: >-60dB 10MHz: >-30dB 100MHz: >-26dB	16MΩ / 1.5pF(differential) 8MΩ / 3pF(each input to ground)
DP1500	100 MHz	Rev 1: 150V（50X） 1500V（500X） Rev 2: 150V（20X） 1500V（200X）	DC：>-80dB 100kHz: >-60dB 10MHz: >-30dB 100MHz: >-26dB	16MΩ / 1.5pF(differential) 8MΩ / 3pF(each input to ground)
DP3000	100 MHz	Rev 1: 300V（100X） 3000V（1000X） Rev 2: 300V（50X） 3000V（500X）	DC：>-80dB 100kHz: >-60dB 10MHz: >-30dB 100MHz: >-26dB	20MΩ / 0.5pF(differential) 10MΩ / 1pF(each input to ground)
DP7000	100 MHz	700V（100X） 7000V（1000X）	DC：>-80dB 100kHz: >-60dB 10MHz: >-30dB 100MHz: >-26dB	60MΩ / 0.78pF(differential) 30MΩ / 1.6pF(each input to ground)
DP701	150 MHz	Rev 1: 70V（20X） 700V（200X） Rev 2: 70V（10X） 700V（100X）	DC：>-80dB 100kHz: >-60dB 10MHz: >-30dB 100MHz: >-26dB	16MΩ / 1.5pF(differential) 8MΩ / 3pF(each input to ground)
DP1501	150 MHz	Rev 1: 150V（50X） 1500V（500X） Rev 2: 150V（20X） 1500V（200X）	DC：>-80dB 100kHz: >-60dB 10MHz: >-30dB 100MHz: >-26dB	16MΩ / 1.5pF(differential) 8MΩ / 3pF(each input to ground)
DP3001	150 MHz	Rev 1: 300V（100X） 3000V（1000X) Rev 2: 300V（50X） 3000V（500X）	DC：>-80dB 100kHz: >-60dB 10MHz: >-30dB 100MHz: >-26dB	20MΩ / 0.5pF(differential) 10MΩ / 1pF(each input to ground)
DP7001	150 MHz	700V（100X） 7000V（1000X）	DC：>-80dB 100kHz: >-60dB 10MHz: >-30dB 100MHz: >-26dB	60MΩ / 0.78pF(differential) 30MΩ / 1.6pF(each input to ground)
DP702	200 MHz	Rev 1: 70V（20X） 700V（200X） Rev 2: 70V（10X） 700V（100X）	DC：>-80dB 100kHz: >-60dB 10MHz: >-30dB 100MHz: >-26dB	16MΩ / 1.5pF(differential) 8MΩ / 3pF(each input to ground)
DP1502	200 MHz	Rev 1: 150V（50X） 1500V（500X） Rev 2: 150V（20X） 1500V（200X）	DC：>-80dB 100kHz: >-60dB 10MHz: >-30dB 100MHz: >-26dB	16MΩ / 1.5pF(differential) 8MΩ / 3pF(each input to ground)
DP3002	200 MHz	Rev 1: 300V（100X） 3000V（1000X） Rev 2: 300V（50X） 3000V（500X）	DC：>-80dB 100kHz: >-60dB 10MHz: >-30dB 100MHz: >-26dB	20MΩ / 0.5pF(differential) 10MΩ / 1pF(each input to ground)
DP7002	200 MHz	700V（100X） 7000V（1000X）	DC：>-80dB 100kHz: >-60dB 10MHz: >-30dB 100MHz: >-26dB	60MΩ / 0.78pF(differential) 30MΩ / 1.6pF(each input to ground)
DP703	300 MHz	70V（20X） 700V（200X）	DC：>-80dB 100kHz: >-70dB 10MHz: >-40dB 120MHz: >-26dB	16MΩ / 1.5pF(differential) 8MΩ / 3pF(each input to ground)
DP1503	300 MHz	150V（50X） 1500V（500X）	DC：>-80dB 100kHz: >-70dB 10MHz: >-40dB 120MHz: >-26dB	16MΩ / 1.5pF(differential) 8MΩ / 3pF(each input to ground)
DP3003	300 MHz	300V（100X） 3000V（1000X）	DC：>-80dB 100kHz: >-70dB 10MHz: >-40dB 120MHz: >-26dB	20MΩ / 0.5pF(differential) 10MΩ / 1pF(each input to ground)
DP704	400 MHz	70V（20X） 700V（200X）	DC：>-80dB 100kHz: >-70dB 10MHz: >-40dB 120MHz: >-26dB	16MΩ / 1.5pF(differential) 8MΩ / 3pF(each input to ground)
DP1504	400 MHz	150V（50X） 1500V（500X）	DC：>-80dB 100kHz: >-70dB 10MHz: >-40dB 120MHz: >-26dB	16MΩ / 1.5pF(differential) 8MΩ / 3pF(each input to ground)
DP3004	400 MHz	300V（100X） 3000V（1000X）	DC：>-80dB 100kHz: >-70dB 10MHz: >-40dB 120MHz: >-26dB	20MΩ / 0.5pF(differential) 10MΩ / 1pF(each input to ground)
DP705	500 MHz	70V（20X） 700V（200X）	DC：>-80dB 100kHz: >-70dB 10MHz: >-40dB 120MHz: >-26dB	16MΩ / 1.5pF(differential) 8MΩ / 3pF(each input to ground)
DP1505	500 MHz	150V（50X） 1500V（500X）	DC：>-80dB 100kHz: >-70dB 10MHz: >-40dB 120MHz: >-26dB	16MΩ / 1.5pF(differential) 8MΩ / 3pF(each input to ground)
DP3005	500 MHz	300V（100X） 3000V（1000X）	DC：>-80dB 100kHz: >-70dB 10MHz: >-40dB 120MHz: >-26dB	20MΩ / 0.5pF(differential) 10MΩ / 1pF(each input to ground)

Micsig DP1501 (20X/200X) High-voltage differential probe head