Vaisala HMT140 User Manual

Page 48

Advanced Options

VAISALA

OutputLog.txt. To locate the file, go to the Help menu,

select Utility Folder Paths, and then Explore Data.

DHCP Caching:

When this option is selected, the

HMT140 will cache its IP address assigned from the

DHCP server until the DHCP lease time has expired or

the HMT140 is power cycled. If not selected, the

HMT140 will request an IP address each time it attempts

to contact the host.

ARP Caching:

When this option is selected, the HMT140

will store and keep a list of IP/MAC relationships. If not

selected, the HMT140 will rebuild the IP/MAC relation-

ships with every attempt to contact the host.

DNS Caching:

When this option is selected, the HMT140

will cache the IP address that results from the DNS

lookup of the Destination hostname. The HMT140 will

keep the destination IP address until either the DHCP

lease time expires or the HMT140 is powered cycled. If

not selected, the HMT140 will request a DNS lookup of

the Destination hostname each time it attempts to con-

tact the host.

Connect Window:

Set the amount of time in seconds

(three to eight seconds) that the HMT140 will attempt to

associate and authenticate to an access point or a wire-

less router (this includes the time to obtain an IP address

from a DHCP server). The default rate is 5 seconds.

Data Rate:

The default data rate is 1 Mbit/sec. and can be

set from one to 54 Mbit/sec. The lower the data rate the

longer range the HMT140 will have. The 802.11b data

rates are: 1, 2, 5.5 and 11. All other data rates are 802.11g

data rates.

Note:

An access point or wireless router may be config-

ured to exclude 802.11b data rates.

Override Destination Port:

Leave blank to not use this

feature. If a number (1 to 65535) is placed in this field,

the utility will force the Destination Port to use this

entered number. Use this feature to force the Destination

Port to another value other than the default 6767.