Hardware Description. ETAS ES650

ETAS

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3.1

Hardware Description

Hardware Description

This chapter contains information on the following topics:

• ES600 Measurement Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

• ES650.1 A/D and Thermo Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

• Package Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

• Housing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

• Ports and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

• Maximum Input and Common-Mode Voltages. . . . . . . . . . . . . . . . . . . . 19

• Measurement Accuracy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

ES600 Measurement Modules

The ES6xx series comprises a range of advanced and powerful measurement and interface modules. All modules are designed for use under harsh environ mental conditions and are therefore ideally suited for automotive use. This applies both to the housings of the ES6xx series and all cable connections. The ability of these modules to operate under a wide range of ambient tempera tures and power supply voltages further contributes to their suitability for auto motive applications.

The compact and rugged housings of the ES6xx series allow easy mounting even under difficult installation conditions. By installing the modules close to the signal source, it is possible to avoid long signal lines that would corrupt measurement signals. The housings of the ES6xx series stack easily to build larger blocks of units.

The measurement modules provide a high sampling rate with high resolution and accuracy. The accuracy is guaranteed across A/D and Thermo Modulethe entire extensive ambient temperature range.

The interface modules provide the connection to the popular bus systems used in motor vehicles and to various emulator probes (ETK).

Each module is equipped with a powerful Ethernet interface that ensures highspeed data exchange with the host PC.

A synchronization and power management module makes it possible to con nect several measurement and interface modules to one Ethernet interface on the host PC. This synchronization and power management module also ensures simultaneous sampling of all measurement channels—even in large module networks. The periodic synchronization signal is superimposed onto the Ethernet signals without affecting data transfer. This excludes the possibil ity of a phase shift between the individual signals, even when measurements are taken from different modules.

All modules of the ES6xx series have an automatic power saving feature. For this purpose, the modules are equipped with a link signal detector that is con trolled directly by the Ethernet interface. As soon as a device connected to the

ES650.1 starts to send link signals via the Ethernet interface, the module is

ES650.1 - User Guide 12