P401-DAI Wireless Video Transmitter User Manual

1. IntroductiontoP401-DAI

P401-DAIisa2.4/5.8Gdual-band,high-bandwidth,high-power,2x2MIMOwirelessdata

transmissionmodule.BasedontheprincipleofTDD,ituseskeytechnologiessuchasOFDMand

MIMOtoimprovefrequencybandutilizationwhileprovidingalongertransmissiondistance.It

supportsautomaticfrequencyhoppingandautonomousdynamicadjustmentofMCS,andhas

advantagessuchaslongrange,stronganti-interferenceability,andlowlatency.Asahighly

integratedmoduleproduct,thisproductcanbewidelyusedinfieldssuchasdrones,security

monitoring,wirelessscreenprojection,wirelessaudioandvideo,andspecialinspections,and

canmeettheneedsofcustomersforrapiddevelopmentandapplication.

P401-DAIcanoperateinAPandDevicemodes,enablingstableandreliablelong-range

wirelesscommunication.

2. TechnicalFeaturesofP401-DAIModule

•

BasedontheprincipleofTDD,keytechnologiessuchasOFDMandMIMOareadoptedto

improvetheutilizationoffrequencybands.

•

SupportsAESencryption,multiplesecuritypolicies,andpreventsillegaleavesdroppingand

interception.

•

Adoptafrequencyhoppingscheme,monitorinterferenceinrealtime,andautomatically

selectthefrequencyhoppingrange;basedontheinterferencesituationofthecurrent

channel,automaticallyandquicklychangethefrequencypointandadjusttheModulation

andCodingScheme(MCS).

•

Supportsstarnetworkingplusrelaynetworking,enablingtheconstructionofwirelessmulti-

hopnetworkingapplications.

•

Themaximumrateofairinterfacetransmissioncanreach40Mbps.

2.1 FrequencyHoppingandSweepingMechanism

The

framestructurecanbeconfiguredandsupportsreal-timefrequencyhopping

perframe.Iftheperiodofeachframeis5ms(arelativelyshortframestructure),then200hops

canbeachievedin1second.Ofcourse,forone-to-manyapplications,theframeperiodis

generallyaroundseveraltensofmilliseconds.

supportstwosweepmodes,referredtohereasshortsweepandlongsweep.

Shortfrequencysweepismainlyusedtoconductinterferencetestingonfrequencypoints

withinafrequencyband(suchasthe2.4Gfrequencybandor5.8Gfrequencypoint),andonly

requiresshortfrequencysweeptestingatthereceivingend.Themainpurposeistoobserve

whetherthereareinterferencesignalswithintheworkingfrequencyband,identifythecurrent

workingfrequencypointandalternativefrequencypointswithlessinterference,sothatwhen

thecurrentworkingfrequencypointisinterferedwith,frequencyhoppingcanbeperformedto

thealternativefrequencypoints.Generally,weobserveinterferencesignalsfrom-90dBmto

-60dBm.

Longsweepfrequencyismainlyusedtoevaluatethesignalqualityoftwofrequencybands

(suchasadual-bandsystemwith2.4Gand5.8Gfrequencybands).Thetransmitterwilltime-

shareselectsomefrequencypointsfromthetwofrequencybandstotransmitknown

sequences,andthereceiverwillobtainalternativefrequencypointsbasedonthereceived

signaltonoiseratio,preparingforfuturefrequencyhopping.

2.2 Anti-interferenceperformancecharacteristics

supportsinterleavedblocksof1.25ms,2.5ms,and5ms.Takingthe5msinterleaved

blockasanexample,itcanresistco-channelinterferenceofabout1ms.Thishasagood

performanceadvantageforsomesuddenshortWIFIpackets.Whencombinedwithahighlyreal-

timefrequencyscanningandhoppingmechanism,relativelygoodanti-interference

performancecanbeobtained.

3. KeySpecificationsofP401-DAIModule

3.1 BasicCharacteristics

Table1MainSpecificationsoftheModule

Category



Parameter



Description



System

 Dimensions 23x29x2.85mm(includingshield)

Weight 3.75grams

PowerSupply DC5V

Pin/Package 65pin/stamphole(including9PGNDPADs)

TemperatureRange

OperatingTemperature:-40to85°C

StorageTemperature:-40to120°C

Interface



USB 1xUSB2.0Host/Device

RMII 1xRMII

DEBUGUART 1x

UART 2x

Wireless



MaximumTransmitPower



ModulationMode

ChannelSelection Self-AdaptationFrequencyHopping

WirelessTransmissionDelay <10ms

AirInterfaceRate 200Kbps~160Mbps

NetworkingMode Point-to-Point,Point-to-Multipoint,Multi-HopRelay

MainChip V3



Encryption

SupportshardwareAES/DES/3DESencryption

algorithms

frequencyband

2.4G:2422-2466MHz

2.4G:OFDM-BPSK,QPSK,16QAM,64QAM

5G:OFDM-BPSK,QPSK,16QAM,64QAM,256QAM

5G:5730-5840MHz

2.4G: 18.33dBm

5G:6.88dBm

4.1 ModuleDimensions

Figure2.4.2ModuleDimensionDiagram

Top

Bottom

4.2 P401-DAIModuleInterfaceSignals

Figure2.4.4SchematicDiagramofModulePINs(TopView)

I/OTypeDefinition

Type Description

DI DigitalInput

DO DigitalOutput

AI AnalogInput

AO AnalogOutput

IO DigitalInput/Output

AIO AnalogInput/Output

PI PowerInput

PO PowerOutput

PU Pullup

PD Drop-down

\ Notapplicable

Table4PinDefinitions

PINNumber PINName Default

Status

Type Description PowerDom

ain

GPIOReuse



[1]

14 ANT-B \ AIO RFinterface \ \

24 ANT-A \ AIO RFinterface \ \

2 CLK_RTC_OU

T

\ AO 32.768KHzRTC

Clock

[2]



\ \

3 CLK_RTC_IN \ AI \ \

9 UART2_RX PU IO UART2RX 1.8V GPIOA_0

5 BB_TX_SYNC PD IO BasebandTX

Synchronous

Output

1.8V GPIOA_1

6 UART2_TX PD IO UART2TX 1.8V GPIOA_3

29 UART3_RX PD IO UART3RX 3.3V GPIOC_3

27 UART3_TX PD IO UART3TX 3.3V GPIOC_4

19 TR_SW_2G PD DO 2GTRControl

Signal

3.3V \

28 TR_SW_5G PD DO 5GTRControl

Signal

3.3V \

30 SYS_RST PU DI SystemReset 1.8~3.3 \

31 UART_TX0 PD DO DebugUART 1.8V GPIOB_4

32 UART_RX0 PD DI 1.8V GPIOB_3

34 RMII_MDC PD DO RMIIInterface 1.8V GPIOB_1

35 RMII_MDIO PD IO 1.8V GPIOB_2

39 RMII_RESET PU DO 1.8V GPIOD_12

42 RMII_CLKOUT PD DO 1.8V GPIOD_10

47 RMII_TXEN PD DO 1.8V GPIOD_5

48 RMII_TXC PD DO 1.8V GPIOD_4

43 RMII_TXD1 PD DO 1.8V GPIOD_9

44 RMII_TXD0 PD DO 1.8V GPIOD_8

54 RMII_RXDV PU DI 1.8V GPIOD_11

45 RMII_RXD1 PD DI 1.8V GPIOD_7

46 RMII_RXD0 PD DI 1.8V GPIOD_6

50 USB_DP \ IO USB2.0 \ \

51 USB_DM \ IO \ \

52 USB_ID PU DI USBID 1.8V \

53 USB_VBUS_3V \ PI USBVBUS

【

】

 3.0V \

18 BOOT_SEL0 PD DI Specialfor

enteringUSB

downloadmode

1.8V \

26 BOOT_SEL1 PD DI 1.8V \

33 VDD_1V8_OU

T

\ PO 1.8VPower

Supply

1.8V \

38 VDD_3V3_OU

T

\ PO 3.3VPower

Supply

3.3V \

8 VBAT_IN \ PI RTCPower

Supply,thisPIN

mustbe

externally

connectedto

1.8V,refertothe

notesafterthe

tablefordetails3

1.8V \

11,40,55,56 VDD_IN \ PI ModuleSOC

PowerSupply

3.3~5.5V \

16,17,21,22 VDD_RF_IN \ PI ModuleRFFEM

PowerSupply

5V \

7,36 NC

1,4,10,12,13,15,

20,23,25,37,41,

49

GND \ \ GND \ \

57,58,59,60,61,

62,63,64,65

PGND \ \ GND \ \

Federal Communications Commission (FCC) Statement

This device complies with part 15 of the FCC Rules. Operation is subject to the following

two conditions:

(1) This device may not cause harmful interference, and

(2) this device must accept any interference received, including interference that may

cause undesired operation

Note:This equipment has been tested and found to comply with the limits for a Class B

digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide

Reasonable protection against harmful interference in a residential installation. This

equipment generates, uses and can radiate radio frequency energy and, if not installed

and used in accordance with the instructions, may cause harmful interference to radio

communications. However, there is no guarantee that interference will not occur in a

particular installation. If this equipment does cause harmful interference to radio or

television reception, which can be determined by turning the equipment off and on, the

user is encouraged to try to correct the interference by one or more of the following

measures: Reorient or relocate the receiving antenna.

. Increase the separation between the equipment and receiver.

. Connect the equipment into an outlet on a circuit different from that to which

the receiver is connected.

. Consult the dealer or an experienced radio/TV technician for help.

Warning: Any changes or modifications not expressly approved by the party responsible

for compliance could void the user's authority to operate the equipment.

RF exposure statement:

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled

environment. This equipment should be installed and operated with minimum distance

20cm between the radiator&your body.

OEM Guidance

1. Applicable FCC rules

This module has been tested and found to comply with part 15.247 and requirements for

Modular Approval.

2. The specific operational use conditions

This module can be used in IoT devices. The input voltage to the module is nominally

DC. The

operational ambient temperature of the module is - to degree C. Only the authorized

antenna is allowed. Any other external antenna is prohibited.

3. Limited module procedures

N/A

4. Trace antenna design

N/A

5. RF exposure considerations

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment.

This equipment should be installed and operated with minimum distance 20cm between the radiator&

８５

part 15.407

your body.

M onopole

6. Antenna

Antenna type: PCB antenna; Peak gain: 3.40dBi

7. Label and compliance information

An exterior label on

OEM’s end product can use wording such as the following:

“Contains Transmitter Module FCC ID: 2AC7Z-ESP32WROOM32E” or

“Contains FCC ID: 2AC7Z-ESP32WROOM32E.”

6. Antenna

Antenna type :

; Antenna Max. Peak Gain

7. La

bel and compliance information

can be used only when all FCC ID compliance requirements are met.

8. Information on test modes and additional testing requirements

a)The modular transmitter has been fully tested by the module grantee on the required

number of channels,modulation types, and modes, it should not be necessary for the host

installer to re-test all the available transmitter modes or settings. It is recommended that the

host product manufacturer, installing the modular transmitter,perform some investigative

measurements to confirm that the resulting composite system does not exceed the spurious

emissions limits or band edge limits (e.g., where a different antenna may be causing

additional emissions).

b)The testing should check for emissions that may occur due to the intermixing of emissions

with the other transmitters, digital circuitry, or due to physical properties of the host product

(enclosure). This investigation is especially important when integrating multiple modular

transmitters where the certification is based on testing each of them in a stand-alone

configuration. It is important to note that host product manufacturers should not assume that

because the modular transmitter is certified that they do not have any responsibility for final

product compliance.

If the investigation indicates a compliance concern the host product manufacturer is

obligated to mitigate the issue. Host products using a modular transmitter are subject to all

the applicable individual technical rules as well as to the general conditions of operation in

Sections 15.5, 15.15, and 15.29 to not cause interference. The operator of the host product

will be obligated to stop operating the device until the interference have been corrected .

The FCC ID

When the module is installed in the host device, the FCC ID label must be visible through a

window on the final device or it must be visible when an access panel, door or cover is easily

re-moved. If not, a second label must be placed on the outside of the final device that

contains the following text: “Contains FCC ID:

9. Additional testing, Part 15 Subpart B disclaimer

The final host / module combination need to be evaluated against the FCC Part 15B criteria for

unintentional radiators in order to be properly authorized for operation as a Part15 digital device.

The host integrator installing this module into their product must ensure that the final composite

product complies with the FCC requirements by a technical assessment or evaluation to the FCC

rules,including the transmitter operation and should refer to guidance in KDB 996369. For host

products with certified modular transmitter, the frequency range of investigation of the composite

system is specified by rule in Sections 15.33(a)(1) through (a)(3), or the range applicable to the

digital device, as shown in Section 15.33(b)(1), whichever is the higher frequency range of

investigation. When testing the host product, all the transmitters must be operating. The transmitters

can be enabled by using publiclyavailable drivers and turned on, so the transmitters are active. In

certain conditions it might be appropriate to use a technology-specific call box (test set) where

accessory devices or drivers are not available. When testing for emissions from the unintentional

radiator, the transmitter shall be placed in the receive mode or idle mode, if possible. If receive mode

only is not possible then, the radio shall be passive (preferred) and/or active scanning. In these

cases, this would need to enable activity on the communication BUS (i.e., PCIe, SDIO, USB) to

ensure the unintentional radiator circuitry is enabled.

Testing laboratories may need to add attenuation or filters depending on the signal strength of any

active beacons (if applicable) from the enabled radio(s). See ANSI C63.4, ANSI C63.10 for

further general testing details.

２ＢＶＳＪＰ４０１－ＤＡＩ

Monopole Antenna

:2.4G:3.38dBi,5G:5.52dBi

P401-DAI Wireless Video Transmitter

Product's Documents

User Manual

Specifications

Kutian (Xiamen) Microelectronics P401-DAI Questions and Answers

Related Products

Boss Audio Systems WTR20 Universal Wireless Video Transmitter and Receiver

Hollyland HL-MARS 4K TX Mars 4K Wireless Video Transmitter

Hollyland HL-MARS 300 PRO ENHANCED Mars 300 PRO HDMI Wireless Video Transmitter/Receiver Set Enhanced

Hollyland HL-MARS300PROSINGLETRANSMITTER Mars 300 PRO HDMI Wireless Video Transmitter

Hollyland HL-MARS 300 PRO STANDARD Mars 300 PRO HDMI Wireless Video Transmitter/Receiver Set Standard

ADV Wireless Hdmi Video Transmitter And Receiver