V750-series UHF RFID System User's Manual - PLCeasy
V750-series UHF RFID System User's Manual - PLCeasy
V750-series UHF RFID System User's Manual - PLCeasy
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(8) Noise monitoring (NOIS)<br />
This command is to check the noise level of the specified antenna.<br />
Command NOIS(S)Mode(S)Antenna<br />
Mode: noise level measurement mode (0: fixed)<br />
Antenna: the port number of antenna (1-4) that is to check the noise level.<br />
Response NOIS[RC](S)[ch1 and ch2](S)[ch3 and ch4](S)・・・<br />
・・・(S)[ch49 and ch50]<br />
[RC]: Response Code<br />
[ch1 and ch2] to [ch49 and ch50]:<br />
Noise level of each communication channel.<br />
*The response data has a noise level every 2channels<br />
(1MHz band,1ch and 2ch, 3ch and 4ch,…,49ch and 50ch).<br />
*1ch means 902.75MHz, 2ch means 903.25MHz, 3ch means 903.75MHz, …,<br />
50ch means 927.25MHz<br />
* (S) Space Character<br />
** To convert the response data to dBm, put them into the following formula;<br />
20 log 10 (response value) - 135. (The derived value should be used only as a guide.)<br />
Example 1) Noise level check for the antenna port 1:<br />
[Tx] NOIS 0 1<br />
[Rx] NOIS0000 0000032A 00000345 000003B9 000003E0 ... 00000339<br />
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