Teds Transducer Identification - HBM PACEline CMD600 Bedienungsanleitung

CMD600

3.7 TEDS transducer identification

TEDS stands for "Transducer Electronic Data Sheet". An electronic data sheet
as per the IEEE 1451.4 standard is stored in the charge amplifier of the
piezoelectric measurement chain, making it possible for the downstream
evaluating electronics to be set up automatically. The suitably equipped
evaluating electronics import the measuring chain characteristics (electronic
data sheet), translates them into its own settings and measurement can start.
The TEDS memory is empty when delivered.
We recommend the TEDS dongle module (Order No. 1−TEDS−DONGLE) to
read in the TEDS data.
A digital identification system is available at PIN 4 (to ground). The basis for
this is a DS2433 1-wire EEPROM, made by Maxim/Dallas.
Content of TEDS memory as per IEEE 1451.4:
The information in the TEDS memory is organized into templates which are
prestructured to store defined groups of data in table form. Only the entered
values are stored in the TEDS memory itself.
The amplifier firmware assigns the interpretation of the respective numerical
values. This places a very low demand on the TEDS memory.
The memory contents are divided into four areas:
Area 1:
An internationally unique identification number (cannot be changed).
Area 2:
The base area (basic TEDS), to the configuration defined in standard IEEE
1451.4. The transducer type, the manufacturer and the transducer serial
number are contained here.
Area 3:
Data specified by the manufacturer are contained in this area:
These specify
− the transducer type,
− the measurand,
− the electrical output signal,
− the required excitation.
The High Level Voltage template must be written by the customer.
A2781−2.1 en/de/fr
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