Vaisala HMT140 - Manual (Page 46)

Battery Usage
38 VAISALA
Connection Performance
Consistent connection performance is essential for longevity
of battery life. The HMT140 Utility can perform a test to
indicate how well the HMT140 connects to the network,
which provides an indication about the expected battery life.
To perform the test, see page 43.
Note: If the average connection time is more than five
seconds, the HMT140 may not connect consis-
tently and the battery may be exhausted before
the battery meter indicates.
Connect Times
The following are the components of the connect time:
Determining Connection Problems
In some networks, one of the optional components of the
connect time may take too long to perform on a consistent
basis. If the average connection time is too long it is
important to try isolate the cause.
To isolate a connection problem:
1
Open the HMT140 Utility and connect the Configuration
Cable to the device and your PC.
Description Option
802.11 b
(sec)
802.11g
(sec)
Cache/
Noncache
HMT140 Startup No 2 0.1
Auto Find Channel Yes 1 0.1
Associate/
Authentication
No < 1 < 1
DHCP lookup Yes < 1 < 1
DNS lookup Yes < 1 < 1