Device Construction; Read And Write Techniques - Leuze electronic RFM 32 SL 200 Technical Description

3.2.6

Device construction

Figure 3.5:
3.3

Read and write techniques

RFID devices with working frequency of 13.56MHz (HF) form a spherical, homogeneous
electromagnetic field around the antenna. The operating range varies depending on the
device type. The transponder that is used (antenna geometry) also has a significant
influence. For exact data, please refer to the specifications of the read/write systems (see
also "Typical reading behavior" from page 11).
The front of the device (black) or the active side (equipped with LEDs, depends on model)
must not be enclosed by metal. A metal surface in the read field will likewise reduce the
operating range.
Notice!
The antenna surfaces of transponder and read/write system should be as parallel with one
another as possible at the read/write position.
Leuze electronic
Device construction using the RFM 32 as an example
RFM - HF RFID Series
Device description RFM - HF RFID Series
Device top: Active surface (antenna)
PWR (yellow), READ (green), ACT (red)
(mounting on metal surface possible)
(cross hairs = antenna middle)
Indicator LEDs:
Defined antenna field
Shielded connection cable
with system plug
15