Vaisala HMT140 Guide de l'utilisateur télécharger pdf (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:

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

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Vaisala HMT140 Guide de l'utilisateur Page 46