Delta DVW-W1I2-E1 Series User Manual page 53

De lta Indus tr ia l W ire less D VW-W0 1 I2- E1 Ser ies Us er Man ua l
Client Mode
To enable or not enable fast roaming function.
Scan channel
_3
Set DVW scan strategy, the system offers two options.

Scan changing signals:
When the signal of AP in connection with DVW is lower than scan threshold,
once signal value changes and triggers DVW to scan for available AP; the
AP signal information received provides DVW to determine in switching or
not; the parameter of scan period is invalid under this mode.

Periodic scanning or scan changing signals:
When the signal of AP in connection with DVW is lower than scan threshold,
the DVW is triggered according to scan period or changing signal values for
available AP; the AP signal information received provides DVW to determine
in switching or not
To set fast roaming, DVW scans the assigned AP channels; when there are
more channels that need to be determined, roaming speed is also more
easily affected.
 Below are options in the first drop-down list:
-- Auto: Scan all the channels and select an option without selecting the
second and third drop-down lists.
--The present AP channels in connection with DVW.
 Below are options in the second and third drop-down list:
-- Not scanning: Scanning channels only from the previous drop-down list.
-- Channel value: Select desired channels for scanning.
Scan time
When DVW scans for available APs, set the scan time for each
channel.Setting range: 10~200ms.
Scan period
Set the AP interval period for DVW scan. Setting range: 1000~300000ms。
Scan threshold
Set the AP threshold once DVW is triggered for scanning, but only when the
AP's transmission power connected to the present DVW is lower than the
threshold value, the DVW will scan the available AP based on the scan
period. Setting range: -95~0 dBm.
Roaming signal difference
Set DVW roaming signal difference which is a condition for DVW to execute
switch action. When the signal difference between present AP's transmission
power in connection with DVW and the new AP is larger than the setting
value, the DVW will switch to the new AP. Setting range: 5~20 dBm.
3 - 3 4
Description Default value
Disabled
Scan changing
signals
Auto
50
1000
-50
5