Standardisation - RFID: Fundamentals and Applications in Contactless Smart Cards and Identification - page 258

9.3 ISO 69873 - Data Carriers for Tools
and Clamping Devices
This standard specifies the dimensions for contactless data carriers and their mounting
space in tools and cutters (Figure 9.39). Normally the data carriers are placed in a quick
release taper shaft in accordance with ISO 69871 or in a retention knob in accordance
with ISO 69872 . The standard gives installation examples for this.
The dimensions of a data carrier are specified in ISO 69873 as d 1 = 10mm and
t 1 = 4 . 5mm. The standard also gives the precise dimensions for the mounting space.
9.4 ISO 10374 - Container Identification
This standard describes an automatic identification system for containers based upon
microwave transponders. The optical identification of containers is described in the
standard ISO 6346 and is reflected in the data record of the transponder-based container
identification .
Active — i.e. battery supported — microwave transponders are used. These are
activated by an unmodulated carrier signal in the frequency ranges 850-950MHz
and 2400-2500MHz. The sensitivity of the transponder is defined with an electric
field strength E of a maximum of 150mV/m. The transponder responds by backscatter
modulation (modulated reflection cross-section), using a modified FSK subcarrier pro-
cedure (Figure 9.40). The signal is modulated between the two subcarrier frequencies
40 kHz and 20 kHz.
The transmitted data sequence corresponds with the example in Table 9.17.
9.5 VDI 4470 - Anti-theft Systems for Goods
9.5.1 Part 1 - Detection gates - inspection guidelines
for customers
The VDI 4470 guideline provides a practical introduction to the inspection and testing
of installed systems for electronic article surveillance (EAS) systems (see Figure 9.41).
t 1
d 1
Figure 9.39 Format of a data carrier for tools and cutters