Text preview for : 5990-3780EN N2790A 100 MHz_252C N2791A 25 MHz and N2891A 70 MHz High-voltage Differential Probes - D part of Agilent 5990-3780EN N2790A 100 MHz 252C N2791A 25 MHz and N2891A 70 MHz High-voltage Differential Probes - D Agilent 5990-3780EN N2790A 100 MHz_252C N2791A 25 MHz and N2891A 70 MHz High-voltage Differential Probes - Data Sheet c20140821 [10].pdf
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Keysight N2790A 100 MHz,
N2791A 25 MHz and N2891A 70 MHz
High-voltage Differential Probes
Data Sheet
Oscilloscope users often need to make
floating measurements where neither
point of the measurement is at earth
ground. Use the N2790A, N2791A or
N2891A high-voltage differential probe
to make safe and accurate floating
measurements with an oscilloscope.
The N2790A, N2791A and N2891A
high-voltage differential probes allow
conventional earth-grounded Keysight
oscilloscopes to be used for floating
signal measurements.
02 | Keysight | N2790A 100 MHz, N2791A 25 MHz and N2891A 70 MHz High-voltage Differential Probes - Data Sheet
With a differential amplifier in the probe head, the N2790A
is rated to measure differential voltage up to 1,400 VDC +
peak AC with high CMRR (common mode rejection ratio) of
>50 dB at 1 MHz. The N2791A and N2891A can measure
differential voltage up to 700 V and 7 kV differential or
common mode respectively. The N2790A, N2791A and
N2891A differential probe offers sufficient dynamic range
and bandwidth for your application to make the floating
measurements found in power electronics circuits safely
and accurately.
The N2790A, N2791A and N2891A differential probe
offers user selectable attenuation settings that make it
highly versatile, allowing it to be used for a broad range of
applications. The probe comes with probe tip accessories
for use with both small or large components in tight
places. The N2790A and N2891A also have an overrange
Figure 2. N2791A 25-MHz high-voltage differential probe with standard
indicator which alerts the user when the probe input accessories
exceeds the dynamic range of the probe.
The N2791A and N2891A are compatible with any
oscilloscope with 1 Mohm BNC input. The N2791A
and N2891A probe's power is supplied by included 4x
AA batteries or USB host port of the scope or PC via a
supplied USB power cable. The N2790A is compatible
with the Keysight Technologies, Inc. AutoProbe interface
where the probe's power is supplied by the Keysight
oscilloscope's probe interface.
Figure 3. N2891A 70-MHz high-voltage differential probe with
standard accessories.
Max number of
Keysight oscilloscope compatibility N2790A probes
supported by
oscilloscope
InfiniiVision 5000, 6000 (except 4
100 MHz), and 7000 Series with
version 5.26.0001 software
InfiniiVision 3000 X- and 4000 X-Series 4
Infiniium 8000, 54830 Series with 4
Figure 1. N2790A high voltage differential probe with standard accessories version 5.7 software
Infiniium 9000 Series with version 2.0 4
software
03 | Keysight | N2790A 100 MHz, N2791A 25 MHz and N2891A 70 MHz High-voltage Differential Probes - Data Sheet
6 Vout
Vout/Vin
3
dB 0
-3
Vin
-6
BW (-3dB) = 147 MHz
-9
106 107 108
Frequency (Hz)
Figure 4. Vout/Vin vs. frequency response of N2790A
Figure 5. Frequency response (Vout/Vin) of N2790A when inputs are driven in common (com-
mon mode rejection)
Figure 6. Input impedance vs. frequency of N2790A
04 | Keysight | N2790A 100 MHz, N2791A 25 MHz and N2891A 70 MHz High-voltage Differential Probes - Data Sheet
Vms
Frequency (Hz)
Figure 7. Voltage derating curve of N2790A (voltage between either input and ground)
Figure 8. Vout/Vin vs. frequency response of N2791A
Figure 9. Frequency response (Vout/Vin) of N2791A when inputs are driven in common
|(common mode rejection)
05 | Keysight | N2790A 100 MHz, N2791A 25 MHz and N2891A 70 MHz High-voltage Differential Probes - Data Sheet
Figure 10. Input impedance vs. frequency of N2791A
Figure 11. Voltage derating curve of N2791A (voltage between either input and ground)
06 | Keysight | N2790A 100 MHz, N2791A 25 MHz and N2891A 70 MHz High-voltage Differential Probes - Data Sheet
Figure 12. Vout/Vin vs. Frequency response of N2891A at 1000:1 attenuation
Figure 13. Frequency response (Vout/Vin) of N2891A when inputs are driven in common
(common mode rejection)
07 | Keysight | N2790A 100 MHz, N2791A 25 MHz and N2891A 70 MHz High-voltage Differential Probes - Data Sheet
Figure 14. Input impedance vs. Frequency of N2891A
Figure 15. Voltage derating curve of N2891A (voltage between either input and ground)
08 | Keysight | N2790A 100 MHz, N2791A 25 MHz and N2891A 70 MHz High-voltage Differential Probes - Data Sheet
Performance characteristics
Product number N2790A N2791A N2891A
Bandwidth (-3dB) 100 MHz probe bandwidth* 25 MHz probe 70 MHz
bandwidth
Rise time (calculated) 3.5 ns 14 ns 5 nsec
Attenuation 50:1 / 500:1 10:1 / 100:1 100:1 / 1000:1
Gain accuracy (% of reading)