Vaisala HUMICAP HMT140, Руководство пользователя

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Appendix Specifications and Troubleshooting
62 VAISALA
9
Check if the hostname is being resolved in Config mode
(go to the HMT140 Utility Status tab and examine the
Resolved Destination field).
Can connect to the network and Contact Destination using the
utility, but host is not receiving UDP packets in Transmitter
mode.
1
Verify your network settings.
2
Check if the access point using Auto Channel mode is
switching between channels. The access point may have
switched to a different channel than is set up in the
HMT140.
3
Use the Connect Time tool in the utility to verify how
long the HMT140 takes to connect to the network.
• If the network consistently takes longer than five
seconds to connect to the network, you may need to
make adjustments to the settings. Set the connect time
window to a longer value (use the Connect Time tool to
help determine this value) or change a connection
component like channel AutoFind or DHCP.
Note:
Extending the Connect Window may cause the
battery to be exhausted more quickly. The bat-
tery meter may need to be de-rated.
4
Verify the signal strength where the HMT140 is located.
Also check how the HMT140 is mounted and oriented at
this location with respect to the access point. For
example, the HMT140 is mounted at the back of a
refrigerator but may work better being mounted near the
top of the refrigerator.
5
Change batteries.
Battery Meter indicates a lower battery life than expected
1
Confirm whether the battery meter was reset when the
batteries were last changed. (See Battery Usage on
page 37.)
2
Set a longer transmit period.
3
Check the HMT140. Was the SERVICE button pressed
frequently?
4
Check alarm history. Were there a large number of
alarms initiating more frequent transmission attempts?