Справочник Пользователя для Agrident Corporation ASR700
05.07.2007
Page 33 of 56
ASR700 Reader Operation
4.3.7 Cfg_Optimisations
The ASR700 reader is optimised for noise reduction. In most applications there is no need to
change the optimisations.
Optimised for noise reduction means that a certain time is need to calculate out parts of the
noise. This time might be to long for some applications (e.g. pass troughs, gates or raceways)
For this reason three optimisations for the reading speed are possible.
The ASR700 is delivered with optimisation High noise setting (see below).
The used optimisation for the application is depending on the size of the antenna, the speed of
the transponder and the noise of the environment.
Four optimisations are available at software version 3.16:
•
change the optimisations.
Optimised for noise reduction means that a certain time is need to calculate out parts of the
noise. This time might be to long for some applications (e.g. pass troughs, gates or raceways)
For this reason three optimisations for the reading speed are possible.
The ASR700 is delivered with optimisation High noise setting (see below).
The used optimisation for the application is depending on the size of the antenna, the speed of
the transponder and the noise of the environment.
Four optimisations are available at software version 3.16:
•
High noise setting
In this time step the ASR700 reader works with longest possible reading cycles (in compli-
ance with ISO 11784/85), to offer a maximum of noise reduction.
It is recommended to use this time step mode in noisy environments (e.g. in a slaughter-
house).
This is the default time step mode of the ASR700.
In this time step the ASR700 reader works with longest possible reading cycles (in compli-
ance with ISO 11784/85), to offer a maximum of noise reduction.
It is recommended to use this time step mode in noisy environments (e.g. in a slaughter-
house).
This is the default time step mode of the ASR700.
•
High speed setting
In this time step the ASR700 reader works with shortest possible reading cycles (in com-
pliance with ISO 11784/85), to offer a high reading speed but may be with minor noise re-
duction (depending on the speed of the transponder).
It is recommended to use this time step mode in noiseless environments, were high read-
ing speed is necessary (e.g. on trucks, pass troughs, gates or raceways).
In this time step the ASR700 reader works with shortest possible reading cycles (in com-
pliance with ISO 11784/85), to offer a high reading speed but may be with minor noise re-
duction (depending on the speed of the transponder).
It is recommended to use this time step mode in noiseless environments, were high read-
ing speed is necessary (e.g. on trucks, pass troughs, gates or raceways).
•
Median setting
This time step is a compromise between Low speed time step and Fast speed time step. It
offers a higher reading speed than Low speed operating mode and more noise reduction
than High speed operating mode.
This time step is a compromise between Low speed time step and Fast speed time step. It
offers a higher reading speed than Low speed operating mode and more noise reduction
than High speed operating mode.
•
Variable timing
This time step combines high reading speed with noise reduction. If no transponder is in
the field, the reader operates with shortest possible reading cycles (in compliance with ISO
11784/85). If a transponder signal is detected, the reading cycle will be stretched if neces-
sary (in compliance with ISO 11784/85). Noise reduction is less than with High noise set-
ting, because of the variable timing.
This time step combines high reading speed with noise reduction. If no transponder is in
the field, the reader operates with shortest possible reading cycles (in compliance with ISO
11784/85). If a transponder signal is detected, the reading cycle will be stretched if neces-
sary (in compliance with ISO 11784/85). Noise reduction is less than with High noise set-
ting, because of the variable timing.
Register
Cfg_
Adr
Bits to
set
Hex value
of
Settings
Significance of the registers or their configuration
0x00*
Optimisations
0x00
High noise setting
1
0x01
High speed setting
Cfg_
Optimisa-
tions
Optimisa-
tions
0x39
2
0x02
Median setting
1,2
0x03
Variable timing setting
* Default values specified.
Send 'Save_Cfg' command after configuration of Cfg_Optimisations, otherwise the new configu-
ration data will be lost when the power supply is switched off and will have to be redone after
switching on again.