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Differential probe

Differential Probe Capable of Wide-Band, High-Voltage Floating Measurements.

Differential probe
Differential probe

Contacts and Location

Description

Differential Probe Capable of Wide-Band, High-Voltage Floating Measurements. Oscilloscope input amplifiers are normally single-ended. They do not provide accurate measurements when used in combination with a 10:1 passive probe for measuring the gate-to-source voltage of a switching power supply, or potential difference with a common mode voltage in elements such as Insulated Gate Bipolar Transistors (IGBTs). Furthermore, there is a risk that current will enter through the oscilloscope’s ground line and damage the oscilloscope. With increases in the speed of measured signals in recent years, it has become necessary to make floating measurements over a wide frequency band. The 700924 differential probe lets you make wide-band (100 MHz) differential input measurements. Just connect the probe to the input of a single-end input digital oscilloscope.

Specification

  • Input type: Balanced differential input
  • Frequency band: DC up to 100 MHz (-3 dB)
  • Input attenuation ratio: Switched between 1/100 and 1/1000
  • Input impedance: Approximately 4 MW, approximately 10 pF parallel
  • Gain accuracy:
    • ±2% (common mode voltage % 400 V)
    • ±3% (common mode voltage % 1000 V)
  • Maximum allowed differential voltage:
    • ±350 V (DC + ACpeak) or 250 Vrms (1/100 range)
    • ±1400 V (DC + ACpeak) or 1000 Vrms (1/1000 range)
  • Maximum common mode input voltage: ±1400 V (DC + ACpeak) or 1000 Vrms (both 1/100 and 1/1000 ranges)
  • Maximum input voltage: ±1400 V (DC + ACpeak) or 1000 Vrms (1/1000 range)
  • Common Mode Rejection Ratio (CMRR): -80 dB (60 Hz), -50 dB (1 MHz)
  • Output voltage: ±3.5 V
  • Output impedance: Used with 1 MW input impedance
  • Power supplies: Dry cells, four R6P (SUM-3); when using the AC/DC adapter, use an output voltage of 6 V/200 mA or greater/center plus
  • Dry cell life: Approximately 2 hours under continuous use
  • External dimensions (approximate): 207 mm 5 83 mm 5 38 mm
  • Total length: Approximately 1.5 meters
  • Weight: Approximately 800 grams (excluding dry cells)
  • Approved standards:
    • EMC: EN55011: 1991 + A1: 1997 + A2: 1996 EN50082-1: 1992
    • Safety: EN61010-1: 1993 + A2: 1995 EN61010-2-031: 1994

Services

addition to oscilloscopes for wide-band, high-voltage floating measurements

Status

free for rental

Funding Source

Other -
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