Siemens SIMATIC RF300 - Page 23

RF300 system planning
4.1 Fundamentals of application planning
SIMATIC RF300
System Manual, Release 04/2006, J31069 D0166-U001-A2-7618
4-3
Table 4-2 RF340R transmission window and read/write distance
S
a
: Operating distance between transponder and reader
S
g
Limit distance (maximum clear distance between upper surface of the reader and the
transponder, at which the transmission can still function under normal conditions)
L
x
Length of a transmission window in the x direction
The length L
x
is valid for the calculation. At S
a,min
, the field length increases from L
x
to L
max
,
see field data.
L
y
Length of a transmission window in the y direction
The length L
y
is valid for the calculation. At S
a,min
, the field length increases from L
y
to L
y max
,
see field data.
M Center of antenna