Vaisala HMT140 User Manual

Page 70

Appendix Specifications and Troubleshooting

VAISALA

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.

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.

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.

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.

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

Set a longer transmit period.

Check the HMT140. Was the SERVICE button pressed

frequently?

Check alarm history. Were there a large number of

alarms initiating more frequent transmission attempts?