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© Copyright Pico Technology 2008

DO144-1

8. Specifications

Bandwidth

DC to 50 MHz (-3 dB)

Attenuation ratio

1:10

Accuracy

±1%

Rise time

< 7 ns

Input impedance

1.6 M

Ω || 7 pF each side to ground

Input Voltage

Differential Range*

±70 V (DC + Peak AC) or 70 V RMS

Common Mode Range*

±700V (DC + Peak AC) or 600 V RMS

Absolute Max. Voltage*

(either input to ground)

±700 V (DC + Peak AC) or 600 V RMS CAT I

Output

Swing (into 5 kΩ load)

±7 V

Offset (typical)

< ±2 mV

Noise (typical)

0.7 mV RMS

Source impedance (typical)

50

Ω

CMRR (typical)

-95 dB @ 60 Hz; -60 dB @ 1 MHz

Ambient operating temperature

-10 to +40 °C

Ambient storage temperature

-30 to +70 °C

Ambient operating humidity

25 to 85% RH

Ambient storage humidity

25 to 85% RH

Power requirements**

Option 1

Mains adaptor (6 V DC 90 mA or 9 V DC 70 mA)

Option 2

Removable battery pack (4xAA cells)

Option 3

Power leads

Optional extension plugs for mains adaptor

- Input

One jack with 1 A current rating

- Output

Three plugs with 1 A current rating

Length of input leads

50 cm

Length of BNC cable

125 cm

Weight

300 g

Dimension (LxWxH)

111 mm x 22 mm x 14 mm

* Voltage limit is the lesser of the DC+Peak AC and RMS values.

**

a.

The supplied voltage must be less than 16 V and greater than 3.3 V, otherwise

the probe could be damaged or might not operate properly.

b.

Polarity is “+” inside and “–” outside.

If the polarity is wrong, a built-in circuit

protects the probe so that no danger or damage will occur.

c.

When the voltage of the cells becomes too low, the power indicator on the

panel will flicker.

DO144-1

© Copyright Pico Technology 2008

3

Use proper power source

To ensure proper functioning of this probe, use four AA cells or a 6 V DC / 90 mA

mains adaptor or 9 V DC / 70 mA mains adaptor or power leads.

Do not operate the probe if it is damaged

If you suspect there is damage to this probe, have it inspected by qualified service

personnel.

3. Description

By enabling conventional oscilloscopes to display and measure in-circuit waveforms

that are referenced to high common-mode voltages, this differential probe extends

the measurement capability of oscilloscopes to electronic power converters,

inverters, motor speed controls, switch-mode power supplies and many other

applications.

4. Installation

a.

Simply plug in the BNC output connector to the vertical input of a

general-purpose oscilloscope or other measurement instrument, and connect

the auxiliary grounding terminal to a proper ground.

The measurement

instrument must have a ground reference.

b.

Connect an appropriate power source (mains adaptor, battery pack or power

lead) to this probe and then turn it on.

WARNING

To protect against electric shock, use only the

accessories designed for use with this differential

probe.

c.

Using the appropriate probe accessories, connect the input to the circuits under

measurement.

CAUTION

This probe is designed for carrying out differential

measurements between two points on the circuit

under test.

It is not intended for electrically

insulating the circuit under test and the measuring

instrument.