Differential attenuator TP-DA25

Differential attenuator TP-DA25

The Differential attenuator TP-DA25 is a differential 1:25 attenuator, combined with a low noise differential measure lead. It is specially designed to be used with the Automotive scope ATS610004D-XMSG or Automotive scope ATS5004D, to measure high voltages like e.g. in electrical and hybrid vehicles.

Due to the differential inputs of the scope, a standard attenuator or attenuating oscilloscope probe cannot be used without introducing measuring errors. Instead a differential attenuator is required.

The Differential attenuator TP-DA25 can simply be placed directly on the input of the scope and the test probes directly on the 4 mm banana plugs at the end of the measure lead. The Differential attenuator TP-DA25 has a passive design and does not require a battery.

Category: Miscellaneous

The inputs of the Automotive scope ATS610004D-XMSG and Automotive scope ATS5004D are differential. A standard attenuator or attenuating oscilloscope probe only has attenuation in one signal path, but the differential input requires attenuation in both signal paths. Therefore a standard attenuator or attenuating oscilloscope probe cannot be used without introducing measuring errors.

Single ended attenuator mismatch

Instead a differential attenuator like the Differential attenuator TP-DA25 is required, it has attenuation in both signal paths.

Differential attenuator match

Low noise sensitivity

A differential input also means that both sides of the input have a high impedance. There is no connection to ground as in conventional oscilloscopes which are used with coax cables. Using a coax cable on the Automotive scope ATS610004D-XMSG or Automotive scope ATS5004D would result in the scope picking up a lot of external interference.

The specially designed Differential attenuator TP-DA25 has a high Common Mode Rejection Ratio (CMRR), it is very insensitive to external interfering signals. The two ends can be placed up to more than two meters apart, while picking up very little interference. With a conventional oscilloscope with a standard oscilloscope probe this is not possible. The maximum distance between the positive side and ground is then usually limited to approximately 20 cm. And this 20 cm is very susceptible to interference. The Differential attenuator TP-DA25 for the Automotive scope ATS610004D-XMSG and Automotive scope ATS5004D does not have this disadvantage. External interference is very well suppressed by the special construction of the Differential attenuator TP-DA25. Measuring between two distant points is now possible.

The table below shows detailed specifications of the Differential attenuator TP-DA25.

Differential attenuator TP-DA25

Designpassive, no battery required
Attenuation25 x, differential
Maximum input voltage1000 V CAT II
Impedance25 MOhm // 15 pF
Bandwidth2.5 MHz
Connectors 
Instrument sideisolated BNC connector
Test point sidered and black 4 mm shrouded banana plugs
Dimensions 
Total length2000 mm
Length to split800 mm
Length individual ends1200 mm
Width50 mm
Height25 mm
Weight102 g
Colorblack
Certifications and compliances 
CE conformityyes
RoHSyes
Accessories 
Color coding rings5 x 3 rings, various colors
Suitable instrumentsdepending on model,
Differential attenuator TP-DA25 - 6A for Automotive scope ATS610004D-XMSG,
Differential attenuator TP-DA25 - 4A for Automotive scope ATS5004D

The Differential attenuator TP-DA25 is available in the following models, each adjusted for a specific instrument:

Order codePrice
TP-DA25-6A 135.00
TP-DA25-4A 135.00

The Differential attenuator TP-DA25 is delivered with:

AmountItem
1 Differential attenuator TP-DA25
3 Red color coding rings
3 Blue color coding rings
3 Yellow color coding rings
3 Green color coding rings
3 Pink color coding rings

DescriptionVersionRemarksSize
Differential attenuator TP-DA25 user manual1.2English335.83 kB download