X4-A11-W-A Digi International, X4-A11-W-A Datasheet - Page 106
X4-A11-W-A
Manufacturer Part Number
X4-A11-W-A
Description
PORT XBEE 802.15.4 - WIFI802.11G
Manufacturer
Digi International
Series
ConnectPort™ X4r
Specifications of X4-A11-W-A
Function
Transceiver, Xbee, Gateway
Modulation Or Protocol
802.15.4 Zigbee
Frequency
2.4GHz
Interface
1 USB, 1 RS-232, 1 RJ-45
Sensitivity
-93dBm
Power - Output
15dBm
Data Rate - Maximum
54Mbps
Voltage - Supply
6 V ~ 30 V
Wireless Frequency
2.4 GHz
Interface Type
RS-232, Ethernet, SMA
Security
NAT, DES, 3DES, 256 bit AES
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
Applications
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
For Use With/related Products
NS9360
Other names
602-1109
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Request Idle Time-To-Live: Specifies the period of time, in seconds, that a DNS client
request will remain in the DNS Proxy cache, before it is deleted. This is a period of idle
time, during which neither a DNS client request retry is received by the DNS Proxy, nor
a DNS server response is received by the DNS Proxy, for a specific DNS client request.
A shorter Idle TTL results in resources being used more efficiently by the DNS Proxy,
since the client request cache is reduced in size and the request buffers are released more
quickly for future use for other DNS client requests.
Request Retries Per DNS Server: Specifies the number of retries using the same DNS
server, for a specific DNS client request that is being retried (retransmitted) by the DNS
client. There is always one “try” but the number of retries is configurable.
For new client requests received when the request cache is full:
Specifies how to handle new client requests when the maximum number of client
request entries is already being serviced (the request cache is full). There are two
choices for this option:
Replace the Least Recently Used (LRU) client request with the new request:
Remove the least recently used entry from the cache, and add an entry for the new client
request.
Discard (ignore) new requests until some existing requests have expired:
Silently discard the new client request, and do this for all future new requests until one
or more entries have expired and been removed from the request cache.
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