SICK RFU62 Series

9
Side cover open
ß
“USB” connection (female connector, 5-pin, type Micro-B), servicing interface for tempo‐
rary use only
à
Slot for microSD memory card
á
4 x M5 blind tapped holes, 9 mm deep, for alternative mounting of the device
â
Pressure compensation valve (ventilation element)
ã
2 x M6 blind tapped holes, 6 mm deep for mounting the device
3.2.2 Working range of the antenna (sensing range of the reading and writing field)
The UHF field is influenced by its environment, making it impossible to provide a “clear”
demarcation of the sensin range:
•
Application-specific reflections can result in both overreaches and “holes”
(destructive interferences).
•
Other factors that can significantly impact the sensing range include:
°
Quality of the transponder (antenna gain, the integrated transponder IC and
related sensitivity, reflected energy)
°
Material of the carrier object (plastic, wood, metal)
°
Objects between the device and transponder that can affect the UHF field
(items, liquids, people)
In addition to the read results, the RFU device can also output diagnostic data that pro‐
vide an indication of the write and read quality. This data can be used to achieve opti‐
mum read results when setting up the system.
The radiation pattern shown here for the device’s antenna was obtained in a repro‐
ducible environment (absorber chamber as a reflection-free space) for illustrative pur‐
poses. It may therefore only have limited applicability to your specific application. The
diagram shows how the UHF field propagates in a reflection-free space, but cannot be
used to draw any conclusions on the likely sensing range in a real on-site application.
–28
–25
–22
–19
–16
–13
–10
–7
–4
–1
2
0°
15°
30°
45°
60°
75°
90°
105°
120°
135°
150°
165°
180°
–165°
–150°
–135°
–120°
–105°
–90°
–75°
–60°
–45°
–30°
–15°
5
2
1
Figure 4: Radiation pattern of the internal antenna of the RFU620 (typical): Measured antenna
gain in dBic at 866.5 MHz, RHCP (right-hand circularly polarized)
1
Azimuth plane (horizontal)
2
Elevation plane (vertical)
PRODUCT DESCRIPTION 3
8015930/ZTM0/2018-11-06 | SICK O P E R A T I N G I N S T R U C T I O N S | RFU62x
19
Subject to change without notice