Toshiba B-EX4 manual 11.4.2Q value / Q Value, 11.4.3AGC threshold / AGC Threshold

5. SYSTEM MODE

EO18-33027

5.11 RFID Module Setting

5.11.4.2Q value / Q VALUE

It is applicable for only B-SX704-RFID-U2-R/EU-R/US-R/CN-R.

In the case multiple RFID tags are read at the same time, this menu is useful to pinpoint a target tag. Set the Q value to”1” or greater (2 is recommended.). Q value “0” caused the tags to interfere with each other and disables proper data write. When a Q value is set, set an AGC threshold for data write and an AGC threshold lower limit for retry, also. Setting all these values enable writing data to a tag placed just above the antenna.

However, the problem that multiple tags are read the same time does not occur on the B-EX series with most RFID tag types. Ti is not necessary to change the default setting.

Max.	Min.	Step	Display	Sign	Integer	Decimal	0 fullfil	Unit
					digit	point
						digit
15	0	1	Decimal	Non	2	0	Non	Non

5.11.4.3AGC threshold / AGC THRESHOLD

It is applicable for only B-SX704-RFID-U2-R/EU-R/US-R/US-R.

Obtain the gain of the RFID tag, and when that gain is lower than the AGC threshold, tags are considered as error tags even if a data write succeeds.

When the AGC threshold is se to “0”, all tags are writable. When set to 8, for example, only tags with the AGC threshold level set to 9 or greater are writable.

The optimal value is different depending on the tags.

Max.	Min.	Step	Display	Sign	Integer	Decimal	0 fullfil	Unit
					digit	point
						digit
15	0	1	Decimal	Non	2	0	Non	Non

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