Wireless Light-Level Monitoring
ILT1000
Wireless Range
Testing wireless range is very dependent on the environment. In a typical office and light
manufacturing environment this solution showed a range in excess of 100 feet / 30 meters.
Error Handling
Three types of error handling scenarios were tested for each of the wireless configurations. The
TL-WR702N results are as follows:
Error Handling Condition
Result
Wireless access point goes out
of range
During this testing, a system restart was forced (Windows 8
equivalent of a BSOD) upon leaving the wireless range while
accessing the NUS device. This is likely a driver issue related
to use on Windows 8. Past testing has demonstrated the
behavior on Windows XP, but not on Windows 7. This is
likely an issue related to the combination of system, OS-
version, and driver. If the wireless range is lost and re-gained
while the NUS device is not being accessed, the restart does
not occur. The workaround is to ensure that wireless
connectivity is maintained while accessing the NUS device.
Monitoring station/computer
returns from power down mode.
With “Connect Device Automatically” is selected (See Figure
15), the ILT1000 is automatically connected when returning
from low-power mode.
Reboot of the monitoring
station/computer.
With “Connect Device Automatically” is selected (See Figure
15), the ILT1000 is automatically connected upon start-up or
reboot.
Summary:
-
Pros
o
Works as advertised, with the combination of the wireless router and Ethernet-USB
Bridge providing robust wireless-to-USB bridging and supporting the ILT1000.
o
Can be configured to automatically re-connect ILT1000’s after reboot and return
from low-power modes.
o
Simple installation and setup.
o
1 reading/second sampling, which is likely good enough for most remote monitoring
applications.
-
Cons
o
Each Monoprice/Winstars NUS device can handle a maximum of 4 USB devices
connected to it. To expand beyond 4, multiple NUS devices are required.
o
Potential system restart requirement, based on the specific configuration tested,
while accessing the USB device when network connectivity is lost.
17
Содержание ILT1000
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