Omron V780 Series, Руководство пользователя

Страница: 112 / 398

6 Functions
6 - 36 UHF RFID System V780-series Reader/Writer User’s Manual (Z389)
6-7 Maintenance: Communications Infor-
mation
You can access the reception level that was measured by the Reader/Writer while processing commu-
nications with an RF Tag. You can get the reception level information by sending a command from the
host device or by using an option specification for a communications command.
• The reception level information is valid only when the communications command ended normally.
• If the communications command ended in an error, a value of 0 will be returned.
You can measure the noise level in the environment around the Reader/Writer for each frequency
channel. You can get the noise level information by sending a command from the host device.
6-7-1 Getting the Reception Level
Item Description Remarks
Reception level
−
35 to
−
61 dBm
*1
*1. Values outside of the above range may be detected under some conditions.
A value of 0 dBm will be
returned if processing ended
in an error.
6-7-2 Getting the Noise Level
Item Description Remarks
Noise level
−
35 to
−
70 dBm
*1
*1. Values outside of the above range may be detected under some conditions.