AVSS PRS-M350 User manual

© 2023 AVSS –ALL RIGHTS RESERVED 1
PRS-M350 for DJI M350 RTK
Version 1.1

PRS-M350(EX) USER MANUAL FOR DJI M350 RTK
© 2023 AVSS –ALL RIGHTS RESERVED 2
Using this Manual
1. Revision Notes
Revision #
Date
Revision Description
1.0
October 4, 2023
-Initial Internal Release
1.1
October 19, 2023
-Added Firmware Update Procedure in Appendix C.3 for
PRS-M300 Compatibility
2. Legends
Warning
Important
Tips
FOR THE MOST RECENT VERSION OF THE USER MANUAL, PLEASE GO TO:
https://www.avss.co/products/prs-for-dji-M350-rtk/

PRS-M350(EX) USER MANUAL FOR DJI M350 RTK
© 2023 AVSS –ALL RIGHTS RESERVED 3
Using this Manual_____________________________________________________________ 2
1. Revision Notes_________________________________________________________________ 2
2. Legends ______________________________________________________________________ 2
Disclaimer___________________________________________________________________ 5
Terms, Acronyms, & Abbreviations_______________________________________________ 6
Safety Instructions ____________________________________________________________ 7
Limitations __________________________________________________________________ 8
1. Operational & Environmental Conditions ____________________________________________ 8
PRS-M350 Overview___________________________________________________________ 9
1. First Time Setup________________________________________________________________ 9
2. General Use___________________________________________________________________ 9
Features, Specifications, Testing, & Compatibility ___________________________________ 9
1. Features ____________________________________________________________________ 10
2. Specifications ________________________________________________________________ 11
3. Payloads ____________________________________________________________________ 12
Warranty___________________________________________________________________ 13
What’s in the Box: ___________________________________________________________ 14
1. Parts Included ________________________________________________________________ 14
System Overview ____________________________________________________________ 15
1. Parachute Recovery System _____________________________________________________ 15
2. Attachment Bracket ___________________________________________________________ 16
3. Flight Termination System –Through PSDK _________________________________________ 17
4. Manual Triggering Device_______________________________________________________ 18
Installation _________________________________________________________________ 19
1. Electronic Module _____________________________________________________________ 19
2. Parachute Pod™______________________________________________________________ 20
3. Attachment Bracket ___________________________________________________________ 21
4. PSDK Flight Termination System Firmware Configuration ______________________________ 26
Battery & Charging___________________________________________________________ 34
1. Battery Safety ________________________________________________________________ 34
2. Battery Charging______________________________________________________________ 34
3. Changing Electronic Module Battery ______________________________________________ 35
Firmware & SD Card__________________________________________________________ 36
1. MicroSD Card ________________________________________________________________ 36
2. Firmware Updates_____________________________________________________________ 37

PRS-M350(EX) USER MANUAL FOR DJI M350 RTK
© 2023 AVSS –ALL RIGHTS RESERVED 4
Status Indications____________________________________________________________ 39
1. PRS-M350 Indications __________________________________________________________ 39
2. Manual Triggering Device Status Indication_________________________________________ 39
3. Manual Triggering Device Synchronization _________________________________________ 40
Operating Procedures ________________________________________________________ 41
1. Hangar Checklist ______________________________________________________________ 41
2. Installation Checklist ___________________________________________________________ 41
3. Pre-Flight Checklist ____________________________________________________________ 41
4. In-Flight Checklist _____________________________________________________________ 42
5. Landing Checklist______________________________________________________________ 42
6. Post-Flight Checklist (No Deployment) _____________________________________________ 42
7. Deployment Checklist __________________________________________________________ 42
8. Post-Flight Checklist (With Deployment) ___________________________________________ 42
Maintenance & Care _________________________________________________________ 43
1. Post-Flight (Monthly) __________________________________________________________ 43
2. Transportation _______________________________________________________________ 43
3. Storage _____________________________________________________________________ 43
4. Extended Storage Considerations _________________________________________________ 43
Frequently Asked Questions ___________________________________________________ 44
Parachute Pod™Deployment Procedures ________________________________________ 45
Customer Support ___________________________________________________________ 46
Appendix A: DJI M350 RTK & Payload References __________________________________ 47
Appendix B: IMU Calibration Instructions_________________________________________ 48
Appendix C: Additional Information _____________________________________________ 54
1. Pre-Flight FTS Check ___________________________________________________________ 54
2. Ground Risk Buffer Prescription __________________________________________________ 55
3. Firmware Update Process for Conversion From PRS-M300 to PRS-M350 __________________ 56

PRS-M350(EX) USER MANUAL FOR DJI M350 RTK
© 2023 AVSS –ALL RIGHTS RESERVED 5
Disclaimer
•You must read the ENTIRE user manual to become familiar with the features of thisproduct before
operation. Failure to operate the product as instructed by the user manual may result in damage
to the product or personal property and can cause serious injury. Failure to operate the product
as instructed may also void your warranty.
•This is product has been designed for and should only be used by qualified professionals only.
1
•This product is designed to increase the safety of both people and property on the ground during
DJI M350 RTK operations while potentially helping DJI M350 RTK operators meet compliance
requirements. However, this product is not a replacement for safe operating practices and should
serve only as a last resort in the event of an emergency.
•Before use, you shall refer to the DJI M350 RTK manufacturers’ documentation to determine if
this product complies with specific operating requirements and warranty conditions of the DJI
M350 RTK. Failure to comply with the operating requirements of this product and/or DJI M350
RTK manufacturer product may result in damage to the DJI M350 RTK, damage to nearby
property, harm to bystanders, and/or cause serious injury.
•Always use proper judgment when attempting to mitigate risks and/or danger in emergencies. Do
not make or attempt any alterations or adjustments to this product or its use as it could result in
serious injury, or damage to the product or other property and it will void the warranty.
•AVSS –Aerial Vehicle Safety Solutions Inc. (AVSS) assumes no liability and/or ownership of any
failure event that may occur while the system is attached to a DJI M350 RTK. The use of AVSS
products is at the risk of the user.
•Do not store the PRS-M350 and/or any of the associated parts and accessories in any extreme
cold, hot or humid environments.
oLess than 3 months: -20° to +45° C
oMore than 3 months: +22° to +28° C
•This document and the information contained herein are proprietary and commercially
confidential to AVSS. It is prohibited to use, disclose, reproduce, distribute, or use this user manual
other than persons for which purchased the product.
THIS USER MANUAL MAY BE UPDATED AT ANY POINT AND WITHOUT
NOTIFICATION. BEFORE USE, READ, IN ITS ENTIRETY, THE MOST RECENT
VERSION OF THIS USER MANUAL TO UNDERSTAND ALL PROCEDURES, RISKS,
AND RESTRICTIONS ASSOCIATED WITH THIS PRODUCT BEFORE OPERATING.
1
Professional qualifications are determined by the jurisdiction/country in which the commercial DJI M350 RTK is operating.

PRS-M350(EX) USER MANUAL FOR DJI M350 RTK
© 2023 AVSS –ALL RIGHTS RESERVED 6
Terms, Acronyms, & Abbreviations
Terms & Definitions
AGL
Above Ground Level.
ATS
Autonomous Triggering System that is independent of any flight critical system of
the DJI M350 RTK that will detect and initiate parachute deployment upon
detection of a critical failure of the DJI M350 RTK during flight.
Authorized Dealer
An AVSS approved distribution partner who sells the PRS-M350.
Drone
When referring to a DJI M350 RTK, other relevant terms include Aircraft, RPAS,
sUAS, UAS, and UAV.
End-User
The owner of the PRS-M350 who had purchased the system from an AVSS
Authorized Dealer.
FTS
Flight Termination System is a device that will disable the propulsion system of the
DJI M350 RTK.
IP Rating
Ingress Protection Rating.
LiPo
Lithium-Polymer (Chemistry of battery).
Manual Triggering
Device
The manual triggering device, initiated by pressing the triggering button, initiates
the deployment of the parachute recovery system at the discretion of the pilot in
command.
Minimum Deployable
Altitude
The lowest altitude at which the PRS-M350 is rated to deploy successfully.
Parachute Pod™
This refers to the replaceable Parachute Pod™that contains the parachute of the
AVSS PRS-M350.
Position Mode
The PRS-M350 shall be used only in N-mode (Normal): N-mode works best when
the GPS signal is strong. The DJI M350 RTK utilizes GPS and Forward and Downward
Vision Systems to locate itself, automatically stabilize, and navigate between
obstacles. Complete details can be found at www.DJI.com.
PRS
Parachute Recovery System.
Shall
“shall” versus “should” versus “may”, v—use of the word “shall” implies that a
procedure or statement is mandatory and shall be followed to comply with this
specification, “should” implies recommended, and “may” implies optional at the
discretion of the supplier, manufacturer, or operator.

PRS-M350(EX) USER MANUAL FOR DJI M350 RTK
© 2023 AVSS –ALL RIGHTS RESERVED 7
Safety Instructions
Eye Protection
As with any system designed to launch a mass at high velocity, precautions shall
be taken to prevent potential injury.
Never point the
Parachute Pod™
towards anyone or
anything
While the PRS-M350 includes features to prevent unintentional deployments,
users shall be aware that the Parachute Pod™is launched vertically. It is
recommended that the operator maintains a clear area of at least 5 meters after
the system has been powered.
Disarming Manual
Trigger Device
Always disarm the Manual Trigger Device before approaching the DJI M350 RTK
after a landing or in the event of an aborted takeoff.
Ensure PRS-M350 is
DISARMED before
moving it
Do not pick up the PRS-M350 when it is armed because the sensors may
interpret the movements as an in-flight failure. Wait five to ten seconds for the
Autonomous Trigger System to disarm.
Error Status
The system should not be used unless it is indicated that no errors are present.
The system will not arm itself nor deploy in a failure scenario unless it has
initialized successfully.
Low Battery
The PRS-M350 requires enough battery power to operate. Although the PRS-
M350 can draw power from the DJI M350 RTK as a backup if the battery
becomes low during a flight, this feature is not to be used as a substitute for
charging the battery prior to flight.
Parachute Pod™
Repacking
Only parachutes packed by AVSS are compliant. The Parachute Pod™shall be
repacked or replaced annually only by AVSS. You will no longer be compliant
and will void the warranty if you attempt or repack the Parachute Pod™.
Payload Configuration
Always follow DJI’s maximum specified takeoff weight when adding payloads to
the DJI M350 RTK (See Compatibility & Payloads sub-section for a list of
compatible payload configurations).
Position Mode and
Flight Mode Changes
The Autonomous Triggering System is designed to automatically detect
abnormal flight behaviors. Flying in a controlled manner and avoiding erratic
maneuvers ensures that the PRS-M350 can more accurately distinguish
between pilot commands and loss of control. Do not change the flight mode
mid-flight as the DJI M350 RTK can have a hard/abrupt braking maneuver that
can exceed the maximum “30°-degree pitch angle (N-mode, Forward Vision
System enabled: 25°)”2.
Rules and Regulations
Pilots shall follow the rules and regulations put in place by civil aviation or
government bodies in their operating regions.
Li-Po Battery Warning
The PRS-M350 utilizes Li-Po batteries. Li-Po batteries are volatile and can cause
fires. The user must take the necessary precautions when charging the PRS-
M350.
2
https://enterprise.dji.com/matrice-350-rtk/specs

PRS-M350(EX) USER MANUAL FOR DJI M350 RTK
© 2023 AVSS –ALL RIGHTS RESERVED 8
Limitations
1. Operational & Environmental Conditions
-DJI M350 RTK Flight Mode = N Mode
-DJI M350 RTK Maximum Tilt Angle = 30° Degrees
-Maximum Take Off Weight = 9.20 kg (20.28 lbs)
-Minimum Deployable Altitude at 7.70 kg = 44.6 m (146.33 ft)
-Minimum Deployable Altitude at 9.20 kg = 50.8 m (166.67 ft)
-Autonomous Triggering System Arming Height = 43 m (141.08 ft)
-Manual Triggering Device Range = <2 km (<1.24 mi)
-Temperature Range = -20°C to +45°C (-4°F to 113°F)
-Maximum Wind Limit for EASA M2 Mitigation = 9.35 m/s (18.1 knots)
-Maximum Wind Resistance = 12 m/s (39.3 fps)
ONLY FLY THE PRS-M350 IN NORMAL (N) MODE.
DO NOT CHANGE / SWITCH FLIGHT MODES FROM NORMAL MODE TO
AUTOMATED FLIGHT MODES OR AUTOMATED FLIGHT MODES TO NORMAL
MODE MID FLIGHT AS THE DJI M350 RTK MAY MAKE AN ABRUPT STOP OR
MANEUVER AND EXCEED THE “30°-DEGREE PITCH ANGLE (N-MODE,
FORWARD VISION SYSTEM ENABLED: 25°)”.
IF YOU UPDATE THE FIRMWARE ON THE DJI M350 RTK, ALL EXISTING PRS-
M350 PSDK SETTINGS WILL BE REMOVED. THEREFORE, AFTER COMPLETING
A FIRMWARE UPDATE, YOU MUST PERFORM THE FIRST TIME & AFTER
FIRMWARE UPDATES PROCEDURES (SEE “FIRST TIME USE & AFTER
FIRMWARE CONFIGURATION” SECTION)
IF THE PARACHUTE IS DEPLOYED IN HIGH WINDS, THE PARACHUTE CAN
DRIFT. THE PILOT MUST CONSIDER DRIFT ZONES AND THE CONSEQUENCES
IN THEIR RISK ASSESSMENT.
LEAVING THE PRS-M350 ON FOR A PROLONGED PERIOD BEFORE TAKING
OFF CAN CAUSE IT TO ARM IF ENVIRONMENTAL CONDITIONS ARE
CHANGING (E.G., BAROMETER DRIFT).
IF THE PRS-M350 IS INVOLVED IN A MAJOR CRASH, DO NOT REUSE THE PRS-
M350 WITHOUT CONTACTING AVSS’S CUSTOMER SUPPORT AND SPEAKING
WITH A REPRESENTATIVE BEFORE THE NEXT FLIGHT.

PRS-M350(EX) USER MANUAL FOR DJI M350 RTK
© 2023 AVSS –ALL RIGHTS RESERVED 9
PRS-M350 Overview
The PRS-M350 is composed of five (5) main components:
1. The Electronics Module, which houses the battery, sensors, radio, and controller. These electronics
also control the autonomous triggering system that will deploy the parachute.
2. The swappable Parachute Pod™, which contains a compressed spring and a folded parachute.
3. The Flight Termination System Module, a cable adapter and module that enables the Electronics
Module to communicate with the DJI M350 RTK’s PSDK for motor shutoff.
4. The Bracket, which attaches the PRS-M350 to the DJI M350 RTK and allows for easy removal.
5. The Manual Triggering Device, which allows the user to manually initiate a parachute deployment
when desired by pressing on the red triggering button.
1. First Time Setup
When the user receives the product, the Electronics module comes mounted to the top plate of the
bracket with a Parachute Pod™already attached. For a first-time installation, the user must remove the
landing gear brackets on the DJI M350 RTK, place an aluminum spacer block in between and remount the
landing gear bracket with the longer bolts that are provided by AVSS. This spacer block can stay
permanently attached to the aircraft and ensures that the DJI M350 RTK can still fit in the official DJI M350
RTK supplied hard case. The user must then enable the PSDK on the DJI M350 RTK to allow the FTS to
work, which is done using DJI Assistant software.
2. General Use
To use the PRS-M350 for a flight, the DJI M350 RTK can be unpacked from its case and set up according
to DJI’s user manual. Once the aircraft is in its flight configuration, the AVSS bracket can be mounted to
the DJI M350 RTK. The bracket side plates connect and lock into the spacer blocks. The bracket top plate
which already has the electronics module and Parachute PodTM attached can then be mounted and
locked in place using a combination of a sliding motion and quarter turn fasteners. The provided FTS
Module can then be plugged into the PSDK port on the DJI M350 RTK and connects to the electronics
module using the provided cable that features locking connectors. The PRS-M350 is now fully installed.
The PRS-M350 will turn on automatically when the DJI M350 RTK is turned on. The manual triggering
device is turned on by the user to ensure that it is communicating with the PRS-M350. The manual
triggering device has a secondary arm button that must be held down for two (2) seconds to arm the
manual triggering device before the parachute can be manually deployed. Any error with the PRS-M350
will be communicated to the user via the manual triggering device in the form of verbal warnings and a
status LED. During the flight, the PRS-M350 Autonomous Triggering System will arm itself only once it
has reached the minimum deployable barometric altitude. Afterward, if the DJI M350 RTK experiences a
failure, using a combination of accelerometer, gyro, and barometer data, the Autonomous Triggering
System detects the failure, forces the motors to shutoff, and deploys the parachute without the need for
pilot input. If the DJI M350 RTK experiences a flyaway, loss of communication, or other undesirable
behavior, the pilot can manually trigger the parachute deployment to safely recover the aircraft.
Features, Specifications, Testing, & Compatibility
The PRS-M350 has been designed to easily integrate with DJI Matrice 350 RTK (DJI M350 RTK). The
attachment bracket secures the PRS-M350 without interfering with onboard sensors and can be easily
removed for transport. The system includes an electronic module to power the Parachute Pod™and
flight termination system. The flight termination system is initiated when either the pilot instigates a

PRS-M350(EX) USER MANUAL FOR DJI M350 RTK
© 2023 AVSS –ALL RIGHTS RESERVED 10
deployment through the manual triggering device or when the Autonomous triggering system, using
the onboard sensors located in the electronic module, determine that the DJI M350 RTK has breached
the safe flying parameters. Once the flight termination system is initiated and stops the motors from
spinning, the Parachute Pod™is deployed and will result in the DJI M350 RTK descending under a fully
inflated parachute.
1. Features
Attachment
Bracket
The custom mounting bracket allows the PRS-M350 to be easily installed
with minimal effort.
Independent
Power Source
The PRS-M350 is equipped with an independent power source that allows
the system to deploy if the DJI M350 RTK loses power.
Spring-Based
Ejection
A high-energy spring is used to eject the parachute. This non-pyrotechnic
system is safe for travel on commercial airlines.
Autonomous
Trigger System
The Autonomous Triggering System (ATS) automatically detects failures and
triggers the parachute release.
Manual Triggering
Device
The manual triggering device can initiate deployment of the parachute
recovery system at the discretion of the remote pilot in command.
Flight Termination
System
Plug-and-play system that cuts power to the motors in the event of a failure
and to ensure that the parachute does not become entangled in the DJI
M350 RTK’s propellers.
Audible Buzzer
An audible buzzer on the DJI M350 RTK will attempt to notify bystanders
that the PRS-M350 has deployed and the DJI M350 RTK is descending.
Low Descent Rate
The parachute is designed to greatly reduce the descent velocity of the DJI
M350 RTK in the event of a failure.
Flight Data Logging
Flight data logging to a dedicated microSD Card that is integrated in the PRS-
M350.
Parachute Pods™
Easily replaceable Parachute Pod™.

PRS-M350(EX) USER MANUAL FOR DJI M350 RTK
© 2023 AVSS –ALL RIGHTS RESERVED 11
2. Specifications
OVERVIEW3
Total Weight
922 grams (2.03 lbs)
Average Descent Rate (7.70 kg)
3.24 m/s (10.62 fps)
Average Descent Rate (9.20 kg)
3.54 m/s (11.61 fps)
Average Impact Energy (7.70 kg)
40.30 Joules (29.80 ft-lb)
Average Impact Energy (9.20 kg)
57.60 Joules (42.50 ft-lb)
Minimum Deployable Altitude (7.70 kg)
44.60 meters (146.33 ft)
Minimum Deployable Altitude (9.20 kg)
50.80 meters (166.67 ft)
Parachute Reuse Method
Prepacked Pods
Deployment Technology
Spring
Deployment Trigger
Manual and/or Autonomous
PARACHUTE RECOVERY SYSTEM
Main System Weight
650 grams (1.43 lbs)
Deployment Release Time
20 ms
Time to Inflation
0.57s to 1.30s
Battery Life
6 hours
Operating Temperature
-20˚C to +45˚C (-4°F to 113°F)*
PARACHUTE POD™
Parachute Size
5.5m²
Risers/Attachment Location
Internal
FLIGHT TERMINATION SYSTEM
FTS Method
PSDK
Integration Process
PSDK Port
ATTACHMENT BRACKET
Attachment Bracket Weight
272 grams (0.60 lbs)
Material
Carbon Fibre
Attachment Location
Top Mounted
MANUAL TRIGGERING DEVICE (REMOTE)
Range
<2 km (<1.24 mi)
Frequency
915MHz (North America) / 868MHz (Europe)
*Recommended ambient temperature for operation only. See Battery & Charging and Maintenance and Care sections for more information.
3
Subject to change without warning based on supply chain material availability, payload selection, ongoing testing results, and environmental
conditions.

© 2023 AVSS –ALL RIGHTS RESERVED 12
PRS-M350 USER MANUAL FOR DJI M350 RTK
3. Payloads
AVSS’s PRS-M350 typically works with the various DJI M350 RTK payload options that are provided by DJI and that have been developed to
integrate through the DJI PSDK Port. As of 2020-10-01, the following payload combinations, if using the user manual data located on DJI’s and
payload partners’ website
4
, are within the 9.0kg Maximum Take-Off Weight criteria. Be aware, due to the potential unannounced changes by the
supporting DJI M350 RTK and payload manufacturers, these charts are subject to change without any notification. The user is solely responsible
for verifying the weight inaccuracies and calculating the weight of additional items attached to the DJI M350 RTK.
Single Payload Configuration Chart
Single Payload (KG)
Drone
Battery
H20
H20T
Z30
XT S
XT2
U10 Methane
Z15
0.686
0.833
0.556
0.387
0.629
0.534
.500
DJI M350 RTK
TB60/TB65
7.908
8.055
7.778
7.609
7.851
7.756
7.722
Available Weight (MaxTOW 9kg)
1.092
0.945
1.222
1.391
1.149
1.244
1.278
Dual Payload Configuration Chart
Dual Payload (KG)
Drone
Battery
H20T +
Z30
H20T +
XT S
H20T +
XT2
H20T +
U10 Methane
H20T +
Z15
1.389
1.220
1.462
1.367
1.333
DJI M350 RTK
TB60/TB65
8.611
8.442
8.684
8.589
8.555
Available Weight (MaxTOW 9kg)
0.389
0.558
0.316
0.411
0.445
4
Please refer to Appendix A: Drone & Payload References for the complete list of references.

© 2023 AVSS –ALL RIGHTS RESERVED 13
PRS-M350 USER MANUAL FOR DJI M350 RTK
Warranty
•AVSS warrants that the PRS-M350 and its accessories are free from defects and fit for the
operational purpose intended.
•The warranty period for the PRS-M350 is, the earliest of, twelve (12) months after purchase,
or after three Parachute Pod™deployments, which starts on the date listed as per the user’s
invoice from an Authorized Dealer.
•This warranty requires the PRS-M350 to be shipped to AVSS’s location for analysis and may
either be fixed, replaced and/or deemed voided of warranty at the sole discretion of AVSS.
•If the customer believes the PRS-M350 did not properly function or deployed the Parachute
Pod™in a non-failure event (False-Positive), the customer must send AVSS the following files:
▪PRS-M350 Data
▪DJI M350 RTK DAT data
▪DJI M350 RTK Text File
•If the PRS-M350 is deemed void, the cost of analysis and shipping shall be the responsibility
of the end-user. Nothing herein contained shall be construed to exclude or limit any warranty,
express or implied by law.
•AVSS hereby declares that the warranty shall be deemed void if the PRS-M350 is not used for
the intended operational uses and/or if alterations, tampering, or any actions deemed
comprising by AVSS, directly or indirectly, of the PRS-M350 This includes, but not limited to,
non-standard use, the use of potentially disabling anti-operations technology, and/or
unintended damage by the end-user.
•The manual triggering device for the parachute is warrantied against any manufacturing
defect.
•The product warranty does not cover water damage.
•If the product is used or handled in any way otherwise described within this user manual, the
warranty shall be void.
•The PRS-M350 purpose is to assist in decreasing the ground impact energy caused by the DJI
M350 RTK mid-flight failure. The end-user cannot in any circumstances from AVSS pursue any
compensation or allowance if their DJI M350 RTK is damaged.
•It is the responsibility of the purchaser to contact AVSS to obtain additional or updated copies
of the user manual.

© 2023 AVSS –ALL RIGHTS RESERVED 14
PRS-M350 USER MANUAL FOR DJI M350 RTK
What’s in the Box:
1. Parts Included
A. Parachute Pod™
G. FTS PSDK Module
B. FTS Connector
H. HR30 FTS Cable
C. Electronic Module
I. Manual Trigger Device with Battery
D. Top Plate
J. Allen Keys
E. Side Brackets (2)
K. USB-C to USB-A Cable
F. Bracket Leg Connectors (2)
L. M6 Bolt and Washer (2)
A
B
C
D
E
F
G
L
H
J
K
I

© 2023 AVSS –ALL RIGHTS RESERVED 15
PRS-M350 USER MANUAL FOR DJI M350 RTK
System Overview
1. Parachute Recovery System
A. Parachute Pod™
F. Firing Pin Receptacles
B. Electronic Module
G. Orientation Key
C. MicroSD Dust Cap for the
USB/microSD Card Slot
H. Battery Door
D. Status LED
I. Electrical Contacts
E. Power Button
J. Continuity LED
K. HR30 FTS Connector
C
E
A
B
D
F
G
H
I
J
K

© 2023 AVSS –ALL RIGHTS RESERVED 16
PRS-M350 USER MANUAL FOR DJI M350 RTK
2. Attachment Bracket
A. Top Plate
B. Quarter Turns (2)
C. Side Plates (2)
D. Landing Gear Screws (8)
E. Bracket Leg Connectors
A
B
E
C
D

© 2023 AVSS –ALL RIGHTS RESERVED 17
PRS-M350 USER MANUAL FOR DJI M350 RTK
3. Flight Termination System –Through PSDK
A. FTS PPSDK Module
D. HR30 FTS Cable to Electronic
Module Connector
B. HR30 FTS Cable Female Connector
E. HR30 FTS Cable to FTS
Connector
C. USB-C Connector to DJI M350 RTK
PSDK Port
A
B
C
D
E

© 2023 AVSS –ALL RIGHTS RESERVED 18
PRS-M350 USER MANUAL FOR DJI M350 RTK
4. Manual Triggering Device
A. Triggering Button
F. Status LED
B. Antenna
G. Power Button
C. Lanyard Attachment
H. Sync Button
D. Belt Clip
I. USB-C Charging Port
E. Arm Button
A
B
C
E
D
G
H
I
F

© 2023 AVSS –ALL RIGHTS RESERVED 19
PRS-M350 USER MANUAL FOR DJI M350 RTK
Installation
ENSURE BOTH THE PRS-M350 AND DJI M350 RTK ARE OFF DURING
INSTALLATION UNLESS REQUIRED FOR COMPLETING THE STEP.
1. Electronic Module
Turning on the PRS-M350
Step 1
Turn on
System
To turn on PRS-M350, press on the
ON/OFF switch.
Synchronization on PRS-M350
Step 1
Press and
Hold Sync
Button
To synchronize the PRS-M350, ensure
the PRS-M350 is OFF. Next, pull the tab
on the microSD dust cap cover to open
it. Then, press and hold the small blue
synchronization button in the top
corner.
Step 2
Turn On
PRS
While holding the button, turn ON the
PRS. The Main status LED should turn
white after a moment.
Step 3
Turn On
Remote
Turn on the manual remote while
holding the sync button that is located
next to the power button. The LED on
the remote will turn white.
Step 4
Syncing
Once both the PRS and remote are on and in the sync mode (white
LED), they will pair. The remote will indicate that the pair is connected
and the status LED on both the PRS and the remote will green. The PRS
and remote are now bound. They can now be turned off.

© 2023 AVSS –ALL RIGHTS RESERVED 20
PRS-M350 USER MANUAL FOR DJI M350 RTK
2. Parachute Pod™
•ONLY REMOVE THE PARACHUTE POD IF THE PARACHUTE HAS
BEEN DEPLOYED.
•ENSURE THAT THE PRS-M350 IS OFF BEFORE REPLACING THE
POD.
Attaching and changing the Parachute Pod™
Step
1
Remove
Parachute
PodTM
from PRS-
M350
Using the supplied hex key, unscrew the M6 bolt until
the pod can be removed. Do not reuse the bolt and
washer when attaching a new Parachute Pod™.
Step
2
Align New
Parachute
PodTM
Remove the new Parachute Pod™from its shrink
wrap packaging. Align the Parachute PodTM above the
electronics module such that the electrical contacts
will mate properly (as shown).
Step
3
Press
Parachute
PodTM
Against
Module
Press the Parachute PodTM against the electronics
module. The two shall mesh so that they do not slide
against each other.
Step
4
Slide
Washer
onto M6
Bolt
Take a new M6 bolt and slide on a new washer. The
washer is slightly cone shaped. Ensure that the
narrow end is towards the head of the bolt.
Step
5
Tighten
Bolt
Using the M5 hex key, tighten the bolt.
Step
6
Power On
Place the PRS-M350 on a flat surface and turn on.
Step
7
Check
Continuity
Check that the continuity light on the side of the PRS-
M350 is lit. This indicates that the electrical contacts
are properly connected to the pod.
Step
8
Power Off
Power off the module. The new Parachute PodTM is
now successfully installed.