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User’s Guide
Agilent Technologies N2771A 15 kV High Voltage
Probe
WARNING This high voltage probe is designed to prevent accidental shock to the operator when properly
used. This operating note must be read and understood prior to using the probe. Improper
procedures or incorrect analysis of the measurement situation can result in serious shock.
General Information
The Agilent Technologies N2771A High Voltage Divider Probe is an accessory to be used with analog
or digital oscilloscopes having input resistance of 1 M Ω (±1%) and nominal input capacitance between
6 and 20 pF. The Agilent Technologies N2771A is a 1000:1 divider which extends the voltage
measurement capability to 15 kV dc or 10 kV rms ac (30 kV peak).
Specifications
Maximum Input Voltage Temperature Coefficient
DC Voltage: 15 kV
AC Voltage: 10 kV RMS
PEAK Voltage: 30 kV
Compensation Range Division Ratio Accuracy
For input capacitance of 6 pF to 20 pF 1000:1 ±1% when terminated in 1 MΩ
Bandwidth Pollution Degree 2
50 MHz (-3 dB)
Other Characteristics
Input Resistance Operating Temperature
100 MΩ, 1 pF 0 °C to +50 °C
Cable Length: Storage Temperature:
2 meter −20 °C to +70 °C
Altitude: Humidity
Up to 4,600 meters (15,000 ft) Up to 80% relative humidity at +40 °C
Accuracy
DC Volts: ±2%
AC Volts: ±2% at 1 kHz
Less than 200 ppm/ °C
Voltage Derating
The following graph shows the voltage versus frequency derating curve for the Agilent N2771A High
Voltage Probe.
Voltage Versus Frequency Derating Curve
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Frequency Compensation Adjustment
The N2771A High Voltage Probe has a Frequency Compensation adjustment that compensates for
the input capacitance of the oscilloscope being used with the probe.
Use a square-wave generator set for approximately 100 Hz output. Proceed with the following steps
for frequency compensation.
1 Connect the probe to the oscilloscope.
2 Connect probe tip to square-wave generator.
3 Adjust the square wave generator for approximately 10 volts amplitude.
4 Adjust the oscilloscope time base for 20 usec/div.
5 Use a trimmer tool to adjust the compensation capacitor for the flattest pulse top. See the figure
below for the location of the adjustment.
Frequency Compensation Adjustment
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