Module trio enhances performance and flexibility of data-acquisition recorders

21-10-2015 | Yokogawa | Test & Measurement

Three new products have been added to the range of plug-in measurement
modules for Yokogawa's DL850E/DL850EV ScopeCorder family of family of
portable multi-channel data-acquisition recorders, bringing the total number
of modules now available to 19.

The new units are the 720211 high-speed (100 MS/s) 12-bit isolation module,
the 720243 SENT monitor module (available only for the DL850EV Vehicle
Edition ScopeCorder) and the 720254 4-channel 1 MS/s 16-bit isolation
module. Together, they enhance the performance and versatility of the
ScopeCorder family in applications including power systems, transportation
and mechatronics.

With the 720211 high-speed 100 MS/s 12-bit isolation module, up to eight
units can be installed in a DL850E or DL850EV ScopeCorder, compared with a
maximum of four for earlier units. This means that 100 MS/s, 12-bit, 1kV
isolation inputs will be available for up to 16 channels in a DL850E/DL850EV
unit using the 720211 module.

Applications for the 720211 module are in the electric power and energy
sectors, including the testing and evaluation of inverter, motor and power
devices with high speed, high resolution and high voltage. Multichannel
measurements are becoming a fundamental requirement for the above
applications in order for advanced control to be achieved.

The 720243 SENT monitor module enables the monitoring of SENT (Single Edge
Nibble Transmission) protocol communications, displaying the data trend as
an analogue waveform in the same way that existing CAN and LIN bus monitor
modules do. In addition to data trend monitoring, the new module will also
trigger on SENT transmissions.

The SAE J2716 SENT protocol is a point-to-point scheme for transmitting
signal values from a sensor to a controller. It is intended to allow for
high-resolution digital data transmission with a lower system cost than
standard serial data solutions for in-vehicle data transmission. Typical
applications include data communication between air flow sensors and ECUs.

Up to four 720243 modules (providing eight ports of SENT transmissions) can
be installed in a DL850EV. Alternatively, two units can be installed
together with either a 720240 (CAN) or 720241 (CAN-LIN) module.

Applications for the 720243 module include development and production
testing for SENT applications.

The 720254 4-channel 1 MS/s 16-bit isolation module incorporates four
isolated BNC inputs. By installing eight of these modules in a DL850E/EV, a
total of 32 channels can be achieved in a stand-alone measurement system. In
addition to increasing the number of channels that can be installed in a
single mainframe, it also offers increased flexibility to the user in terms
of the variety of modules that can be installed.

Each isolated BNC input has a maximum isolation voltage of 600V (DC + AC
peak) when combined with a 702902(10:1) or 701947(100:1) probe. Maximum
allowable common mode voltage is 300V RMS (CAT II).

The 720254 is suited to a wide range of multi-channel measurement
applications, but particularly for isolated high-voltage measurements and
the long-term monitoring of power generators or multi-output power supplies.
It is also ideally suited to the dynamic analysis of ECUs and/or
powertrains.

Like existing members of Yokogawa's ScopeCorder family, the DL850E combines
features from a high-performance digital oscilloscope and a multi-channel
data-acquisition recorder. It can capture and analyse both transient events
and trends over time periods from milliseconds up to 200 days, storing
acquired data in the large acquisition memory, the internal hard disk and/or
an external PC hard disk.

Flexible modular inputs enable the DL850E to combine measurements of
electrical signals, physical parameters from sensors, and data from CAN/LIN
serial buses, giving engineers a thorough insight into any application by
synchronising the measurement of different types of electrical and physical
signals. Individually isolated and shielded input channels provide high
resolution and high sample rates, while Yokogawa's unique 'dual capture'
feature allows transient signals to be captured during long-term
measurements by recording at two different sampling rates.

The DL850E and DL850EV ScopeCorders are equipped with a large and fast
acquisition memory, allowing storage of up to 2 gigapoints of data and
providing high sample rates of up to 100 MS/s on multiple channels
simultaneously. Yokogawa's unique history memory function allows users to
quickly isolate and examine individual waveform records for detailed
analysis.

The ScopeCorder DE850EV Vehicle Edition is designed for engineers working in
the automotive and railway industries, combining measurements of electrical
signals, physical performance parameters acquired by sensors, and CAN- or
LIN-bus data transmitted by the powertrain management system.

A DC power option allows the DL850EV to be used in a vehicle, with power
being supplied by the vehicle's DC battery. The DC power option allows AC
and DC power supplies to be used together to ensure a highly reliable power
source. If the AC power goes down, the DL850V instantly switches to a DC
input without interrupting the measurement.

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