TA042 100 MHz 1400 V differential oscilloscope probe

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TA042 100 MHz 1400 V differential oscilloscope probe

TA042 100 MHz 1400 V Active differential oscilloscope probe

The TA042 is an active differential probe suitable for high common-mode voltage measurement applications up to ±1400 V (DC + peak AC). It is capable of acquiring higher speed signals of up to 100 MHz. This differential probe extends the functionality of standard single-ended input oscilloscopes to allow a safe and accurate method of making high-voltage differential measurements. Applications include making safe measurements in power circuit applications and acquisition of low speed balanced differential signals found in serial communications buses. The TA042 is an active probe powered by either four AA batteries, included, or the PS008 power supply, available as an optional extra.

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TA042 active differential probe specifications


DC to 100 MHz (–3 dB) 



Rise Time

3.5 ns



Input impedance

4 MΩ ∥ 7 pF each side to ground

Input voltage

Max differential voltage input (100:1)
Max differential voltage input (1000:1)

± 140 V (DC + peak AC) or 140 V RMS
±1400 V (DC + peak AC) or 1000 V RMS

Absolute max. voltage
(differential or common mode)

±1400 V (DC + peak AC) or 1000 V RMS CAT III (1/100 & 1/1000) 

Output voltage

Swing (into 50 kΩ load)


Offset (typical)

<±5 mV

Noise (typical) 

0.9 mV RMS

Source impedance (typical) 

50 Ω

CMRR (typical)

80 dB @ 60 Hz; 50 dB @ 1 MHz

Ambient operating temperature

–10 to 40 °C

Ambient storage Temperature 

–30 to 70 °C

Power requirements 


4xAA cells or 6 V DC / 200 mA mains adaptor
or regulated 9 V DC / 120 mA mains adaptor


Power leads 

Length of input leads

30 cm

Length of BNC lead

90 cm


500 g

Dimension (LxWxH)

207 mm x 83 mm x 38 mm


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