Since 1991 we have been supplying the world with test and measurement equipment. At Pico we realize that your choice of test accessories can be almost as important as your choice of test equipment. Here you can purchase a variety of test and measurement accessories quickly and securely online.

Active oscilloscope probes

This range includes high-voltage probes that extend the input range of your scope, and high-frequency probes that boost its input impedance for more accurate measurements.

All active probes require a power supply or batteries. Our battery-powered probes are supplied complete with batteries, while optional AC adaptors are available for the externally powered types. Read our application note: Choosing the right Pico Technology active differential probe.

For making differential measurements from millivolts to 1000 V CAT III also consider the PicoScope 4444 differential input oscilloscope

25 MHz 1400 V differential oscilloscope probe 20:1/200:1

The TA057 is a 25 MHz bandwidth active differential probe suitable for high common-mode voltage measurement applications up to ±1400 V (DC + peak AC).

This differential probe extends the capability 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.

high voltage active differential oscilloscope probe
Title Language Issue Size Updated All products All languages All documents Status
TA057 25 MHz 1400 V Differential Probe User’s Guide English 1 381 KB Nov 07 2016 English open
Choosing the right Pico Technology active differential probe English 4 1 MB Apr 05 2019 English open

Accessories for the 25 MHz 1400 V differential oscilloscope probe 20:1/200:1

Product Price Quantity
9 V AC power adaptor
Battery pack for active differential probe
Lemo power cable for Pico TA04x and TA05x active differential probes
TA057 differential oscilloscope probe specifications
Bandwidth DC to 25 MHz (–3 dB)
Attenuation ratio 20:1/200:1
Accuracy ±2%
Rise time  14 ns
Input impedance 4 MΩ// 5.5 pF each side to ground
Input voltage
Differential range ±140 V (DC + peak AC) or 140 V RMS @ 20:1 
±1400 V (DC + peak AC) or 1000 V RMS @ 200:1 
Common mode range ±1400 V (DC + peak AC) or 1000 V RMS @ 20:1 and 200:1
Absolute max. voltage
(differential or common mode)
±1400 V (DC + peak AC) or 1000 V RMS CAT III
@ 20:1 and 200:1
Max. amplitude ±7 V into 50 kΩ load
Offset (typical)  < ±5 mV
Noise (typical) 0.7 mV RMS
Source impedance (typical) 1 Ω @ 1 kHz, 8 Ω @ 1 MHz
CMRR (typical)  80 dB @ 50 Hz; 60 dB @ 20 kHz 
Ambient operating temperature –10 to +40 °C
Ambient storage temperature –30 to +70 °C
Power requirements 
Standard 4xAA cells or 6 V DC / 60 mA mains adaptor or regulated 9 V DC / 40 mA mains adaptor
Options Power leads
Length of input leads 45 cm
Length of BNC lead 95 cm
Weight 400 g (including probe and PVC jacket)
Dimension (LxWxH)  170 x 63 x 21 mm