Agilent Technologies N2782B Spezifikationen PDF herunterladen (Seite 11)

11

High-voltage Differential Active Probes

• 25 to 800 MHz bandwidth

• Switchable attenuation

• Measure up to 1,400 V CAT II and

7 kV CAT I

N2790A/91A and N2891A high

voltage differential probes

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 voltage

differential probes allow conventional

earth-grounded Agilent oscilloscope

to be used for floating signal

measurements.

Each 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 small and

large components in tight spaces.

The N2791A and N2891A are

compatible with any oscilloscope

with 1 M BNC input. The N2791A

and N2891A probe 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

Agilent’s AutoProbe interface where

the probe power is supplied by the

Agilent oscilloscope’s probe interface.

1141A 200 MHz differential

probe

The 1141A is a 1x FET differential

probe with 200-MHz bandwidth and

a 3000:1 CMRR. The probe has a

high-input resistance and low-input

capacitance of 7 pF to minimize

circuit loading. The 1141A must be

used with 1142A probe control and

power module, which controls input

coupling modes dc, dc with variable

offset, and dc reject. Two attenuators,

10x and 100x are provided to expand

the linear differential input range to

±30 V. This probe works with any

50- input oscilloscope including

3000 X-, 4000 X-, 5000, 6000 300 MHz

- 1 GHz, and 7000 Series.

1141A 200-MHz differential probe with

1142A probe control and power module

Characteristics for N2790A, N2791A and N2891A differential probe

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

Input impedance

(between inputs)

8 MΩ//3.5 pF 8 MΩ//8 pF 100 MΩ//5 pF

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

Max number of

probes supported

by 3000 X-/4000

X-/ 5000/6000

/7000 Series

4 4 4

Characteristics for 1141A differential

probe

1141A

Bandwidth 200 MHz

Risetime 1.75 ns

Attenuation ratio 10:1 and 100:1

with attenuater

CMRR 3000:1 at 1 MHz

10:1 at 100 MHz

Input

impedance

Between inputs:

1 MΩ//7 pF

Max input voltage 200 Vdc + peak ac

(probe alone)

500 Vdc + peak ac

(with attenuator)

Max number

of probes

supported by

3000 X-/4000 X-

/5000/6000/7000

Series

4

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 25 26

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