Rohde & Schwarz HZO20 High Voltage Probe 1000:1 (400MHz, 1000 Vrms)

• Attenuation ratio 1): 1000:1 ±2% at DC
• Voltage coefficient: 0.0005 %/V (typical)
• System bandwidth: 400 MHz (-3 dB)
• Probe risetime:  900 ps (10 % - 90 %)(typical)
• Input resistance:  50 MΩ ± 1 %

The HZO20 is the general purpose high voltage probe with a 1000 : 1 attenuation. Its fast rise time and accurate frequency response make it suitable for a variety of measurement applications. The very sharp probe tip is spring loaded and minimizes the pressure to the dut (device under test). It also prevents the probe from slipping on the board surface. Especially when probing at an angle. The probe tips are changeable. Replacement tips are provided within the accessory pack. Refer to the maintenance section to learn how to change the probe tip.

Compensation

The probe can be adjusted for low frequency (LF) compensation and for high frequency (HF) compensation and DC dividing ratio.

LF Compensation

LF needs to be adjusted when the probe is connected to the scope input the first time. LF compensation matches the probes cable capacitance to the oscilloscope input capacitance. This matching assures good amplitude accuracy from DC to upper bandwidth limit frequencies. A poorly compensated probe clearly influences the overall system performance (probe + scope) and introduces measurement errors resulting in inaccurate readings and distorted waveforms.

LF compensation is performed by connecting the probe to the probe adjust output on the oscilloscope front panel and adjusting the LF compensation trimmer to optimum square wave response. For clarification see below figures.

HF Compensation (Probe Adjust 1 MHz)

HF needs to be adjusted when the probe is connected to the scope input the first time.HF adjustment is performed by connecting the probe to the rectangular wave generator with a fast rise time. Adjust trimmers for optimum square wave response.
 

DC Adjustment

In order to provide highest accuracy over the voltage range this probes dividing ratio is factory adjusted using 500 VDC source and a measuring device with a precision input impedance of 1MΩ ± 0,01%

Factory calibration traceable to DKD is available on request.