Units And Temperature; Connection Performance - Vaisala HMT140 User Manual

Battery Usage

Units and Temperature

Use the Options menu to set the measurement units you
want to display on screen.
To change display units:
 On the Options tab, select Units.

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:
Connect Times
The following are the components of the connect time:
Description
HMT140 Startup
Auto Find Channel
Associate/
Authentication
DHCP lookup
DNS lookup
Determining Connection Problems
In some networks, one of the optional components of the
connect time may take too long to perform on a consistent
38
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.
Option
No
Yes
No
Yes
Yes
802.11g
802.11 b (sec)
(sec) Cache/
Noncache
2 0.1
1 0.1
< 1 < 1
< 1 < 1
< 1 < 1
VAISALA