Agilent Technologies N2783B Bedienungsanleitung PDF herunterladen (Seite 24)

General Purpose Differential Active Probes - N2790A/91A/891A

High-voltage Differential Probes

• 25 to 800 MHz bandwidth

• Switchable attenuation

• Measure up to 1,400 V CAT II and

7 kV CAT I

Oscilloscope users often need to make

floating measurements where neither

point of the measurement is at earth

ground. Use N2790A, N2791A, or

N2891A high voltage differential probes

to make safe and accurate floating

measurements with an oscilloscope. The

N2790A, N2791A, and N2891A high volt-

age differential probes allow conventional

earth-grounded Agilent oscilloscopes to be

used for floating signal measurements.

Each probe offers user-selectable attenu-

ation 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 small and

large components in tight spaces.

The N2791A and N2891A are compatible

with any oscilloscope with 1 MΩ BNC

input. The N2791A and N2891A probe

power is supplied by the included 4x

AA batteries or the USB host port of the

scope, or PC via a supplied USB power

cable. The N2790A is compatible with

the Agilent’s AutoProbe interface where

the probe power is supplied by the

Agilent oscilloscope’s probe interface. The

N2790A is not compatible with 80000 and

90000 Series oscilloscope.

N2790A N2791A N2891A

Bandwidth 100 MHz 25 MHz 70 MHz

Risetime 3.5 ns 14 ns 5 ns

Attenuation ratio 50:1 / 500:1 10:1 / 100:1 100:1 / 1000:1

CMRR -80 dB at 50/60 Hz

-50 dB at 1 kHz

-50 dB at 1 MHz

-80 dB at 50/60 Hz

-40 dB at 1 MHz

-80 dB at 50/60 Hz

-60 dB at 20 kHz

Max input voltage

to ground

±1000 V (CAT II)

±600 V (CAT III)

±700 V at 100:1

±70 V at 10:1

±7000 V at 1000:1

±700 V at 100:1

Max input voltage

between two inputs

±1400 V at 500:1

±140 V at 50:1

±700 V at 100:1

±70 V at 10:1

±7000 V at 1000:1

±700 V at 100:1

Characteristics for N2790A, N2791A and N2891A differential probe

N2790A 100 MHz high voltage differential

probe

N2790A measuring a power supply signal

N2791A 25 MHz high voltage differential probe

N2891A 70 MHz high voltage differential probe

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