Tenda AP4 User Manual

89
Name
Description
APSD
It specifies whether to enable the Automatic Power Save Delivery (APSD) mode.
APSD is a WMM power saving protocol created by Wi-Fi Alliance. Enabling APSD
helps reduce power consumption. By default, this mode is disabled.
Minimum RSSI
Threshold
It specifies the minimum strength of received signals acceptable to this device. If
the strength of the signals transmitted by a wireless device is weaker than this
threshold, the wireless device cannot connect to this device. If there are multiple
devices in a network, setting a proper value helps wireless devices connect to WiFi
network with better WiFi signal.
Preamble
It specifies a group of bits located at the beginning of a packet to enable a receiver
of the packet to perform synchronization and prepare for receiving data.

Long Preamble (default): Select this option for compatibility with old network
adapters installed on wireless clients.

Short Preamble: Select this option to achieve better synchronization performance
of networks.
Signal Transmission
It specifies the wall penetrating capability of the device.

Coverage-oriented: Applies to a large area with less interference nearby.

Capacity-oriented: Applies to an area with strong interference nearby. This mode
improves the device’s anti-interference capability.
Interference Mitigation
It specifies the device’s capacity to mitigate interference in different environments.
Select a proper option from the drop-down list menu according to your actual
situation. The default is 0.
Beacon Interval
It specifies the interval at which this device sends Beacon frames.
Beacon frames are sent at the interval to announce the existence of a WiFi network.
Generally, a smaller interval allows wireless clients to connect to this device sooner,
while a larger interval allows the WiFi network to transmit data quicker.
Fragment Threshold
It specifies the threshold of a fragment. The unit is byte. Fragmenting is a process
that divides a frame into several fragments, which are transmitted and
acknowledged separately. If the size of a frame exceeds this threshold, the frame is
fragmented. In case of a high error rate, you can reduce the threshold to enable this
device to resend only the fragments that have not been sent successfully, so as to
increase the frame throughput. In an environment with little interference, you can
increase the threshold to reduce the number of frames, so as to increase the frame
throughput. Frame length threshold for triggering the RTS/CTS mechanism. If a
frame exceeds this threshold, the RTS/CTS mechanism is triggered to reduce
conflicts. The unit is byte. Set the RTS threshold based on the actual situation. An
excessively small value increases the RTS frame transmission frequency and
bandwidth requirement. A higher RTS frame transmission frequency enables a WiFi
network to recover from conflicts quicker. For a WiFi network with high user
density, you can reduce this threshold for reducing conflicts. The RTS mechanism
requires some network bandwidth. Therefore, it is triggered only when frames
exceed this threshold.

Tenda AP4 Specifications

General

5 GHz	No
2.4 GHz	Yes
Frequency band	2.4 - 2.483 GHz
Number of users	5 user(s)
Operating modes	Access Point (AP), Repeater, WISP
Transmitting power	20 dBmW
Maximum indoor range	40 m
Networking standards	IEEE 802.11b, IEEE 802.11g, IEEE 802.11n
Ethernet LAN data rates	10, 100 Mbit/s
Maximum data transfer rate	300 Mbit/s
Output current	0.6 A
Output voltage	9 V
Power consumption (typical)	4 W
Placement	Table, Wall
Certification	FCC, CE, VoC, Rohs
Product color	Black
LED indicators	LAN, System, WLAN, WPS
Antenna gain level (max)	5 dBi
USB 2.0 ports quantity	0
Ethernet LAN (RJ-45) ports	1
Security algorithms	64-bit WEP, 128-bit WEP, WPA, WPA2, WPA2-PSK
Number of SSID supported	8
Service Set Identifier (SSID) features	SSID broadcast on/off
Supported network protocols	http/https
Storage temperature (T-T)	-30 - 70 °C
Operating temperature (T-T)	-10 - 45 °C
Storage relative humidity (H-H)	5 - 90 %
Operating relative humidity (H-H)	10 - 90 %

Weight and Dimensions

Depth	31.5 mm
Width	148 mm
Height	146.2 mm