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© Copyright Pico Technology 2008

DO139-1

7. Specifications

Bandwidth

DC to 70 MHz (-3 dB)

Attenuation ratio

1:100/1000

Accuracy

±2%

Input Impedance

10 M

Ω // 10 pF each side to ground

Input Voltage

Differential Range* (1/100)

Max. Differential* (1/1000)

±700 V (DC + Peak AC) or 700 V rms

±7000 V (DC + Peak AC) or 5000 V rms

Common Mode Range*

±7000V (DC + Peak AC) or 2500 V rms

(1/100 and 1/1000)

Absolute Max. Voltage*

Common mode

±7000 V (DC + Peak AC) or 2500 V rms

(1/100 & 1/1000)

Differential mode

±7000 V (DC + Peak AC) or 5000 V rms

(1/100 & 1/1000)

Output Voltage

Swing

±7V 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

℃

Ambient Storage Temperature

-30 to 70

℃

Ambient Operating Humidity

25 to 85% RH

Ambient Storage Humidity

25 to 85% RH

Power Requirements

Standard

4xAA cells or 6 V DC / 200 mA mains adaptor**

or regulated 9 V DC / 120 mA mains adaptor**

Options

Power leads

Length of Input Leads

60 cm

Length of BNC Lead

90 cm

Weight

500 g

Dimension (LxWxH)

202 mm x 83 mm x 38 mm

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

**

a.

The supplied voltage must be less than 12 V and greater than 4.4 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.

DO139-1

© Copyright Pico Technology 2008

3

Use proper power source

To ensure proper functioning of this probe, use four AA cells or a 6 VDC / 200 mA

mains adaptor or 9 VDC / 120 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.

Install four AA cells or connect an appropriate power source to this probe.

c.

Select the proper attenuation ratio.

When measuring signals below 700 V,

switch the attenuation ratio to 1/100 in order to get higher resolution and less

noise.

Otherwise, set the attenuation to 1/1000.

WARNING

To protect against electric shock, use only the

accessories designed for use with this differential

probe.

d.

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.