DJI Digital FPV System: Redefine Your FPV World

Introduction

Slow­ly but sure­ly, DJI Inno­va­tions is fill­ing the drone hob­by rac­ing niche with each new prod­uct, tak­ing this fast-paced sport of the future to the next lev­el with each new prod­uct, thus allow­ing every­one to expe­ri­ence this unfor­get­table expe­ri­ence of high-speed flight with a first-per­son view. The DJI Dig­i­tal FPV Sys­tem is an advanced dig­i­tal ecosys­tem that includes FPV gog­gles, FPV video trans­mit­ter, FPV cam­era and FPV remote con­troller, pro­vid­ing smooth and clear HD video out­put, ultra-low end-to-end laten­cy and long dis­tance broad­cast­ing with pow­er­ful pro­tec­tion tech­nol­o­gy from inter­fer­ence, in a pack­age with a sim­pli­fied com­plex con­fig­u­ra­tion accord­ing to the prin­ci­ple of “set it and for­get it”. As usu­al, let’s start with the key fea­tures of the DJI FPV sys­tem.

Peculiarities

• First Low Laten­cy Dig­i­tal FPV Trans­mis­sion Sys­tem (DJI HDL FPV Trans­mis­sion)
• Sys­tem com­pat­i­ble with Betaflight soft­ware
• Full com­po­nent com­pat­i­bil­i­ty with Cad­dx Neb­u­la Nano Kit dig­i­tal sys­tem
• Oper­at­ing fre­quen­cy range: 5.725 — 5.850GHz
• Video delay 28ms
• Max. removal dis­tance 4 km
• Delay between remote con­trol (DJI FPV RC) and video mod­ule (DJI FPV Air Unit) 7ms
• Each sys­tem com­po­nent is pro­grammed to fire imme­di­ate­ly upon acti­va­tion and remem­ber the first pair­ing with the rest of the com­po­nents (set it and for­get it)
• 8 fre­quen­cy chan­nels for 8 par­tic­i­pants in a one-time race
• 4MP FPV cam­era built on 1/3.2‑inch CMOS sen­sor with 150° wide-angle lens
• Video record­ing in 1080P at 60 fps
• 3 × shoot­ing modes
• FPV gog­gles: 2 x 1440 x 810 screens (each) with 120Hz refresh rate
• 2× Live stream­ing modes (Low Laten­cy: 720P/120fps@28ms; High-Qual­i­ty: 720P/60fps@40ms)
• Focus mode
• 2 × built-in micro SD ports (FPV goggles/FPV mod­ule)
• Abil­i­ty to instant­ly view record­ed footage through FPV gog­gles
• Audi­ence mode
• The sys­tem soft­ware allows the user to remote­ly change the set­tings of each device from the remote
• FPV gog­gles adapt­ed for use with cor­rec­tive gog­gles

Equipment

The devel­op­er offers the DJI Dig­i­tal FPV Sys­tem in two pack­ages:

1. DJI FPV Fly More Com­bo (Mode1/2)
2. DJI FPV Expe­ri­ence Com­bo (Includes FPV Gog­gles, 2x FPV Video Trans­mit Mod­ules, 2x FPV Cam­eras, and Asso­ci­at­ed Leads)

Specification

DJI FPV Goggles

The weight:

415 g (includ­ing head strap and anten­nas)

Dimen­sions:

202 × 126 × 110mm (with anten­nas),
184 × 122 × 110 mm (with­out anten­nas)

Screen size:

2 × 2 inch screens (2 × 5.08cm)

Res­o­lu­tion (each):

1080×720 (4:3); 1440×810 (16:9)

Update fre­quen­cy:

120Hz

Oper­at­ing fre­quen­cy range:

5.725 — 5.850GHz

Trans­mit­ter pow­er (EIRP):

FCC/MIC: <1000mW
CE: <25mW
SRRC: <79 mW

FPV qual­i­ty:

Low Laten­cy Mode: 720p at 120 fps
High Qual­i­ty Mode: 720p@60fps)

Video for­mat:

MP4 H.264

Sup­port­ed video play­back for­mats:

MP4, MOV, MKV (H.264); Audio for­mat: AAC-LC, AAC-HE, AC‑3, MP3

Work­ing tem­per­a­ture range:

0°C to 40°C

Input pow­er:

7.4 — 17.6V

FOV:

Adjustable from 30° to 54°. Cus­tom image size: 50% to 100%

Inter­pupil­lary dis­tance range:

58 ‑70 mm

Bat­tery:

Exter­nal bat­tery: 6.6–21.75V, total pow­er con­sump­tion: 7W

Com­pat­i­ble mem­o­ry cards:

micro SD up to 128GB

DJI FPV Video Transmit Module

The weight:

Video trans­mit­ter mod­ule (with cam­era): 45.8 g
3.9 g (each con­nect­ing MMCX con­nec­tor)

Dimen­sions:

Mod­ule: 44×37.8×14.4mm
Cam­era: 27.4 × 21.1 × 20.1mm
Coax­i­al cable: 100 mm

Oper­at­ing fre­quen­cy range:

5.725 — 5.850GHz

Trans­mit­ter pow­er (EIRP):

Low Laten­cy Mode (720P@120fps): <28ms; FCC/MIC: <1000mW; CE: <25mW; SRRC: <79mW

Min. end-to-end delay:

Low Laten­cy Mode (720P@120fps): <28ms
High-Qual­i­ty Mode (720P@60fps): <40ms

Max. trans­mis­sion dis­tance:

FCC/SRRC: <4 km
CE: <0.7 km

Video for­mat:

MP4 (H.264); Audio For­mat: ACC-LC

I/O inter­face:

Flight con­troller com­pat­i­bil­i­ty:

The video trans­mit­ter mod­ule is only com­pat­i­ble with flight con­trollers that sup­port Betaflight soft­ware

Work­ing tem­per­a­ture range:

0°C to 40°C

Input pow­er:

7.4 — 17.6V, 4–9W

Num­ber of chan­nels:

eight

Chan­nel infor­ma­tion:

DJI FPV Camera

Matrix:

1/3.2″ CMOS; Num­ber of effec­tive pix­els: 4 mil­lion

Lens:

2.1mm, f/2.1

Gate:

rolling shut­ter

ISO:

100–25600

FOV:

150°(D); 122°(X); 93°(V)

Dimen­sions:

22.1×21.1×20.1mm

The weight:

8.2 gr

DJI control equipment

The weight:

762 gr

Oper­at­ing fre­quen­cy range:

5.725 — 5.850GHz

Max. sig­nal trans­mis­sion dis­tance (in an area free from obsta­cles and inter­fer­ence):

FCC/SRRC: 4 km
CE: 0.7 km

Trans­mit­ter pow­er (EIRP):

FCC/MIC: <1000mW
CE: <25mW
SRRC: <79 mW

Work­ing Current/Voltage:

0.6A at 7.6V

Work­ing tem­per­a­ture range:

0°C to 40°C

Charg­ing tem­per­a­ture:

5°C to 40°C

Intelligent remote control battery

Mod­el:

WM37

Type of:

LiPo 2S

Capac­i­ty:

4920 mAh

Volt­age:

7.6 V

Pow­er:

37.39Wh

Appearance

DJI FPV Goggles

DJI FPV Gog­gles.

Controls and indication of FPV goggles

FPV Goggles Menu Interface

DJI FPV Air Unit + FPV Camera.

DJI FPV video trans­mis­sion mod­ule + FPV cam­era.

DJI FPV Remote Controller

DJI FPV remote con­trol.

DJI HDL FPV Transmission

The DJI Dig­i­tal FPV Sys­tem uses DJI HDL FPV (DJI HD Low Laten­cy FPV Trans­mis­sion) tech­nol­o­gy, which inte­grates a dual-band trans­mis­sion mech­a­nism to ensure inte­grat­ed con­trol of the entire sys­tem and a sta­ble, unin­ter­rupt­ed con­nec­tion. DJI HDL FPV offers an ultra-low end-to-end laten­cy of 28 mil­lisec­onds, sim­i­lar to high-per­for­mance ana­log sys­tems, a max­i­mum trans­mis­sion range of 4 km, with anti-jam­ming tech­nol­o­gy to ensure a reli­able sig­nal through­out the flight.

The dig­i­tal sig­nal deliv­ers not only ultra-low laten­cy, but crisp HD qual­i­ty footage at 120fps, which enhances the over­all FPV expe­ri­ence and is ide­al for high-speed moments. Video record­ing can be car­ried out both on a microSD card installed in the video trans­mit­ting mod­ule slot, and on a microSD card installed in the FPV gog­gles slot. The video trans­mit­ting mod­ule writes video in two modes: 1080P at 60 fps and 720P at 120 fps. FPV gog­gles write exclu­sive­ly in 720P at 120 fps.

DJI rec­om­mends the use of a dig­i­tal FPV sys­tem in tan­dem with rac­ing drone com­po­nents such as:

• Frame: LASER HD
• Sys­tem: Tmo­tor F55APROⅡ+F4 HD STACK
• Motors: Tmo­tor HOM-KV1750/T­mo­tor F40PROⅢ-KV2400
• Pro­pellers: Tmo­tor T5143S/3‑bladed Hur­ri­cane

Focus Mode

Thanks to the “Focus Mode” mode, the sys­tem can lim­it the sig­nal bitrate to the cen­ter of the frame, neu­tral­iz­ing any inter­fer­ence, there­by keep­ing the image clear even in dif­fi­cult con­di­tions.

Audience Mode

Pilots can share the feed with oth­er DJI FPV gog­gles that are set to Audi­ence mode, allow­ing view­ers to see what the rid­ers see.

8 channels 8 drones

The user has 8 fre­quen­cy chan­nels at his dis­pos­al, thanks to which it is pos­si­ble to car­ry out a race with eight par­tic­i­pants with­out any prob­lems in one place. This approach reduces the effect of crosstalk and pro­vides opti­mal con­di­tions for pilot­ing.

Multi-antenna technology

The DJI FPV Video Trans­mit Mod­ule is equipped with two anten­nas, each of which is con­nect­ed to a receiv­er and trans­mit­ter, thus pro­vid­ing a wider sig­nal cov­er­age, and there­fore a more reli­able image trans­mis­sion. While DJI FPV Gog­gles are equipped with four omni­di­rec­tion­al anten­nas that sup­port left cir­cu­lar polar­iza­tion, which improves sig­nal recep­tion and com­mu­ni­ca­tion between all com­po­nents of the FPV sys­tem.

Integrated Management

DJI FPV feed­back con­trol soft­ware that allows users to remote­ly set para­me­ters for DJI FPV Gog­gles, DJI FPV Video Trans­mit Mod­ule and DJI FPV Cam­era, sta­bi­liz­ing and reduc­ing com­mon errors.

Camera modes

Depend­ing on where the flight takes place, the user can choose one of the three avail­able shoot­ing modes, which will allow for a more opti­mal image dis­play and, accord­ing­ly, more com­fort­able pilot­ing in FPV mode:

1. Stan­dard Mode — Reduces col­or loss and retains more of the orig­i­nal details, improv­ing image qual­i­ty in day­light.
2. Rac­ing Mode — Suit­able for most rac­ing envi­ron­ments, it pro­vides images with a high­er lev­el of sat­u­ra­tion, help­ing pilots dis­tin­guish between bright obsta­cles and objects through­out the course.
3. LED Mode — Increas­es col­or sat­u­ra­tion in LED light­ing con­di­tions and reduces noise dur­ing night rac­ing, allow­ing pilots to eas­i­ly nav­i­gate their sur­round­ings.

Price

The dig­i­tal FPV sys­tem is sold by the devel­op­er through offi­cial resources at the fol­low­ing prices:

1. DJI FPV Fly More Com­bo (Mode 1/2) – $819
2. DJI FPV Expe­ri­ence Com­bo – $929

FAQ

Flight safety

Q. What pre­cau­tions should be tak­en when using the DJI FPV Sys­tem?
A. It is not rec­om­mend­ed to use the FPV sys­tem in places with strong inter­fer­ence, such as near Wi-Fi sources; Do not fly too far or at too low an alti­tude; To avoid inter­fer­ence, turn off exter­nal Wi-Fi mod­ules installed on the drone itself.

Q. What pre­cau­tions should be tak­en when using the DJI FPV sys­tem in a team race?
A. Main­tain a safe dis­tance of at least 3 meters between each drone. Turn on the pow­er and select a fre­quen­cy chan­nel for each air­craft in turn. Avoid fre­quen­cy chan­nel over­lap. If direct chan­nels start to con­flict, restart all FPV devices in the sys­tem.

Q. What pre­cau­tions should be tak­en when using the DJI FPV sys­tem in oth­er coun­tries or regions?
A. When using the DJI FPV sys­tem in oth­er coun­tries or regions, you must com­ply with local radio reg­u­la­tions. Con­nect your DJI FPV sys­tem to DJI Assis­tant 2 (DJI FPV series), and the soft­ware will auto­mat­i­cal­ly con­fig­ure the sys­tem set­tings to com­ply with local reg­u­la­tions.

Q. What pre­cau­tions should be tak­en when using FPV gog­gles?
A. When using your FPV gog­gles in the sun, do not expose the lens­es to direct sun­light as this may per­ma­nent­ly dam­age the optics.

Q. What pre­cau­tions should be tak­en when using the DJI FPV Video Trans­mit Mod­ule?
A. The Video Trans­mit­ter Mod­ule can gen­er­ate a lot of heat, so do not touch the mod­ule until it has cooled down. Avoid using the VTX mod­ule for extend­ed peri­ods in high ambi­ent tem­per­a­tures and poor ven­ti­la­tion. Oth­er­wise, the air unit will over­heat and enter Low Pow­er mode, which will affect its per­for­mance.

Q. What pre­cau­tions should I take when han­dling the anten­nas of the DJI Video Trans­mit­ter Mod­ule?
A. The DJI Video Trans­mit Mod­ule is equipped with an MMCX anten­na. When remov­ing the anten­na, hold the air unit with one hand, with the oth­er, gen­tly pull the anten­na in a per­fect­ly hor­i­zon­tal posi­tion. Too rough instal­la­tion or removal of the anten­na can lead to the destruc­tion of the con­nec­tor.

Options

Q. What is the laten­cy of the DJI Dig­i­tal FPV Sys­tem?
A. End-to-End Laten­cy is the total time it takes for infor­ma­tion from the cam­era input to get to the dis­play screen. The low­est sys­tem laten­cy is with­in 28ms and deliv­ers 720P at 120fps image qual­i­ty. This is most often achieved in open areas with­out elec­tro­mag­net­ic inter­fer­ence.

Q. What is the screen res­o­lu­tion of DJI FPV Gog­gles?
A. 1080 × 720 with a 4:3 aspect ratio and 1440 × 810 with a 16:9 aspect ratio.

Q. What is the sup­ply volt­age and pow­er con­sump­tion of the DJI FPV Gog­gles?
A. FPV gog­gles are pow­ered by an exter­nal bat­tery (pow­er cable includ­ed) with a volt­age range of 7.4–17.6V. It is rec­om­mend­ed to use 4S bat­ter­ies. The total pow­er con­sump­tion is about 7W. For exam­ple, the bat­tery life of one 4S 1600mAh bat­tery is 3.5 hours with con­tin­u­ous use.

Q. Is the DJI Video Trans­mit Mod­ule com­pat­i­ble with third par­ty cam­eras?
Oh no.

Q. What is the sup­ply volt­age and pow­er con­sump­tion of the VTX mod­ule?
A. The video trans­mit­ting mod­ule is pow­ered by an exter­nal bat­tery with a volt­age range of 7.4 — 17.4V. It is rec­om­mend­ed to use 4S bat­ter­ies. The pow­er con­sump­tion of the video trans­mis­sion sys­tem is 4 to 9 W at nor­mal tem­per­a­ture.

Q. How long does the DJI remote con­trol last on a sin­gle charge?
A. A ful­ly charged bat­tery can oper­ate up to 7.5 hours con­tin­u­ous­ly. To charge the remote con­troller, it is rec­om­mend­ed to use a USB adapter: DJI Gog­gles RE, RONIN‑S, SPARK, or an FCC/CE cer­ti­fied USB adapter that sup­ports Quick Charge 2.0.

Components

Q. Why do the anten­nas on the DJI FPV Gog­gles not lock in after being tight­ened?
A. The anten­nas are free to move once installed to help pro­tect the gog­gles if they are dropped. If the anten­nas did not have free play, then they would break on impact.

Q. Can the FPV cam­era be sep­a­rat­ed from the VTX mod­ule?
Oh yeah. The mod­ule, coax­i­al cable (con­nects the video trans­mit­ting mod­ule and the cam­era) and the cam­era are detach­able. The user can pur­chase these acces­sories from the DJI online store and watch instruc­tion­al videos for instal­la­tion instruc­tions.

Q. Is the DJI Dig­i­tal FPV Sys­tem com­pat­i­ble with the DJI A3 or N3 Flight Con­troller?
Oh no.

Q. Can I adjust the stick trav­el of the DJI con­troller with­out dis­as­sem­bling it?
Oh yeah. Open the left and right rub­ber cov­ers on the back of the remote con­trol and you will see the adjust­ment holes. Use a screw­driv­er to adjust the trav­el of the con­trol sticks. Be sure to close the cov­ers after com­plet­ing the adjust­ment.

Q. What should I pay atten­tion to when installing the left and right rub­ber cov­ers on the remote con­trol after adjust­ing the free play of the sticks?
A. Care­ful­ly secure each cov­er in the holes. Do not press the entire cov­er direct­ly with the palm of your hand.

Q. Can I man­u­al­ly switch between Mode 1 and Mode 2 on the remote con­trol?
Oh yeah. How­ev­er, it is high­ly rec­om­mend­ed not to do so. Man­u­al switch­ing between modes ter­mi­nates the war­ran­ty ser­vice of the equip­ment in case of its break­down dur­ing the switch­ing process. That is why we offer you two flight modes to choose from when pur­chas­ing the remote con­trol.

Functions

Q. How to acti­vate and update the FPV sys­tem?
A. Vis­it the DJI FPV Sys­tem prod­uct page on the offi­cial DJI web­site, enter the down­load sec­tion and down­load DJI Assis­tant 2. Turn on all mod­ules and con­nect them one by one to DJI Assis­tant 2 to start acti­va­tion and update. A video instruc­tion from the devel­op­er is avail­able.

Q. Does video laten­cy increase when record­ing video?
A. Video trans­mis­sion laten­cy will not increase if you record video to a mem­o­ry card insert­ed into the DJI FPV Gog­gles slot. The video trans­mis­sion delay will increase by about 5 ms if you record video on a mem­o­ry card installed in the slot of the video trans­mit­ting mod­ule.

Q. Are DJI FPV gog­gles com­pat­i­ble with ana­log trans­mis­sion sys­tems?
Oh yeah. The AV IN fea­ture on the DJI FPV Gog­gles allows you to con­nect a third-par­ty ana­log receiv­er to the Gog­gles. How­ev­er, it is not rec­om­mend­ed to use an ana­log trans­mis­sion sys­tem and a dig­i­tal FPV trans­mis­sion sys­tem at the same time.

Q. Are the DJI FPV Gog­gles com­pat­i­ble with oth­er DJI drones?
Oh no.

Q. Do I have to re-pair the FPV gog­gles with the VTX if they have already been paired before?
Oh no. Once you have suc­cess­ful­ly paired your DJI FPV Gog­gles with the VTX, they will auto­mat­i­cal­ly link when used again.

Q. Can I use the shared chan­nel of the DJI FPV Gog­gles in flight?
Oh yeah. After turn­ing on the DJI FPV Gog­gles, users will first be redi­rect­ed to the gen­er­al chan­nel. It is rec­om­mend­ed to man­u­al­ly switch to anoth­er (free) trans­mis­sion chan­nel after turn­ing on the gog­gles to avoid inter­fer­ence from oth­er air­craft.

Q. Is broad­cast qual­i­ty lost in Audi­ence mode?
A. In Spec­ta­tor mode, the sec­ondary glass­es use a one-way com­mu­ni­ca­tion sys­tem with the video trans­mit­ter mod­ule, which can gen­er­al­ly affect the image qual­i­ty and sig­nal strength. The broad­cast qual­i­ty of the main points will not be affect­ed. To ensure a good view­ing expe­ri­ence in Spec­ta­tor mode, choose a good view­ing posi­tion that allows free com­mu­ni­ca­tion between the Spec­ta­tor’s glass­es and the Video Trans­mit­ter Mod­ule.

Q. What hap­pens if the VTX goes into Low Pow­er mode?
A. When the VTX goes into low pow­er mode due to over­heat­ing, the frame rate and con­trol dis­tance will decrease, the laten­cy will increase, and video record­ing will stop.

Q. How much does the per­for­mance of the video trans­mit­ter degrade when it goes into low pow­er mode?
A. The frame rate will drop to 30fps, and the laten­cy can reach 60ms or more.

Q. Can I take pho­tos with the dig­i­tal FPV sys­tem?
Oh no.

Q. Does the video trans­mit­ting mod­ule sup­port flight con­troller para­me­ter adjust­ment?
Oh yeah. But only cer­tain para­me­ters of the flight con­troller are reg­u­lat­ed.

Q. What flight con­troller soft­ware ver­sions is the VTX mod­ule com­pat­i­ble with?
A. Betaflight 4.1.0 and up.

Q. Is the dig­i­tal FPV sys­tem com­pat­i­ble with third par­ty remote con­trollers?
A. Yes, but an addi­tion­al receiv­er is required when using the dig­i­tal FPV sys­tem with oth­er remote con­trols. When using a DJI FPV remote con­troller, it is not required.

A photo

Pho­to DJI Dig­i­tal FPV sys­tem.

Video

DJI Dig­i­tal FPV sys­tem in action.

https://www.youtube.com/watch?v=t6MbE2vXd7I

https://www.youtube.com/watch?v=brwR4fAMrks

Video from the devel­op­er.

Acti­va­tion of the dig­i­tal FPV sys­tem.

Spec­ta­tor mode.

Video review about DJI Dig­i­tal FPV sys­tem from Hey­Drones chan­nel.