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D

IVERSITY 

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EMON

FPV

 

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RO 

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ACE 

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DITION

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IVERSITY 

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IDEO 

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ONTROLLER

 

Diversity Demon is a video controller that is used
to bridge three wireless video receivers together.
Multiple receivers are used to enhance signal
quality. It is optimized for RF demanding
applications such as FPV drone racing.

FEATURE SUMMARY

€

Uses your existing wireless composite
video system (NTSC or PAL compatible).

€

Supports 2-receiver and 3-receiver diversity configurations.

€

Two audio channels for Mono or Stereo applications.

€

Very high video bandwidth, superb A/V signal quality. No Latency.

€

Two front panel mounted A/V outputs, fully buffered.

€

Compact Size, 5.9 x 4.3 x 1.5 inches.

€

Operates on 6VDC (2S LiPo) to 25VDC (5S LiPo), 50mA typical.

WHAT IS IT?

Diversity Demon is an intelligent video switch with three A/V (audio/video) inputs that are
multiplexed into a single output. It uses sophisticated realtime video processing technology that
monitors the video signals from three user supplied wireless A/V receivers. If the image begins
to degrade it is switched to a higher quality video source. The video detection is designed for
seamless switching transitions.

Diversity Demon can be used to create a 

spatial diversity

 antenna system. This configuration

involves placing the antennas (from two or three receivers) at slightly different locations. As little
as a few inches apart is enough to offer some signal improvement. Spatial diversity can be used
to reduce multipathing interference.

It is also possible to install vastly different antennas on the three video receivers to enhance the
overall antenna performance. For example, you can combine a low gain omni with a medium
gain patch antenna and a high gain directional antenna. This configuration would act as a
hybrid antenna system that automatically switches from short to long range. Or maybe you want
to expand the effective beamwidth of your antenna system?  If so, then use three similar
receivers/antennas to triple the RF beamwidth.

The antenna strategy you choose will depend on your operating environment and application
requirements. Although Diversity Demon cannot eliminate all video problems, using it with a
carefully chosen receiver/antenna setup will help reduce reception issues.

Diversity Demon ©2016-2017 DIGITAL PRODUCTS COMPANY

P

AGE 

1

July-31-2017

Summary of Contents for DIVERSITY DEMON FPV PRO RACE EDITION

Page 1: ...ality video source The video detection is designed for seamless switching transitions Diversity Demon can be used to create a spatial diversity antenna system This configuration involves placing the antennas from two or three receivers at slightly different locations As little as a few inches apart is enough to offer some signal improvement Spatial diversity can be used to reduce multipathing inte...

Page 2: ...receivers Do not connect any other accessories such as monitors or goggles to them For safety the DC OUT jacks are fuse protected The maximum combined current must be less than 1 25A which is sufficient to power three common Video Receivers vRx s If the fuse is tripped then it can be automatically reset as follows 1 disconnect power 2 correct the over current fault and 3 re apply power IMPORTANT N...

Page 3: ...and directly connect using FatShark s 3 meter long 4 Pin to 4 Pin AV cable FatShark item FSV2008 available separately HELPFUL TIP The phone jacks are direct connect compatible with FatShark goggles that use their compatible 3 5mm 4 Pin AV cable Other FPV goggle brands may NOT work with the direct connect method due to incompatible wiring signal order pinout used by their device s phone plug The RC...

Page 4: ...X3 phone jacks are direct connect compatible with ImmersionRC receivers that use their compatible 3 5mm 4POL AV cable Other receiver brands may NOT work with the direct connect method due to incompatible wiring signal order pinout The RCA cable should be used instead It is also possible to build custom patch cables to work with your particular video receiver The RX1 RX3 phone jacks are 3 5mm TRRS ...

Page 5: ...NEL LED IDENTIFICATION Four LED s indicators are located at the front panel STATUS Solid Green color indicates normal operation Blinking Green indicates manual switching mode is enabled Blinks Red during low battery alert RX1 Green color indicates that the video receiver on the RX1 jack is the signal source Can be configured to flash Red if the video cable is disconnected RX2 Green color indicates...

Page 6: ...witching mode is enabled To cycle to a different RX source simply tap the pushbutton switch The manual switching mode will revert back to normal operation after the pushbutton switch is pressed for two seconds or power is removed This feature is a toggle operation and can be used whenever you want to disable or enable the automatic video switching LOW VOLTAGE ALERT A periodic beep warning will be ...

Page 7: ...ton presses are used to program your preferred parameters For example during the Video Type programming step you would press the switch twice to select the PAL video mode After each entry you will wait about three seconds for the Red STATUS LED to wink and programming will proceed to the next step Programming can be terminated early by disconnecting power and any remaining steps will remain as is ...

Page 8: ...ogramming begins by holding down the pushbutton switch while you apply power Continue to press the switch until the Red STATUS LED is on The audio buzzer will also begin to sound off When you are ready start programming release the switch RX1 s green LED blink pattern will indicate the step number Step 1 S Video Type Range 1 NTSC 2 PAL This entry must be set to match the composite video type used ...

Page 9: ...tep 6 will be used to enter the remaining 0 5V fractional value Note If nothing is entered at Step 5 then Step 6 will be skipped Step 6 S S L Fractional Low Battery Voltage n Range 0 to 0 9 VDC in 0 1 volt increments This entry is a companion to Step 5 and is used to enter the fractional one tenth volt value For example if the desired threshold is 6 5V press six times at Step 5 and five times at S...

Page 10: ... FPV system Point your video camera at a background scene that offers good contrast and a noise free image on the display 2 At the start of the balance adjustment mode the Green RX1 and RX2 LED s will rapidly toggle This indicates that the RX1 and RX2 receiver sources are constantly switching What you see is the video from the two receivers in a ping pong fashion The goal is to calibrate their bri...

Page 11: ...d defaced or removed 6 Batteries cords wall mounted transformers cosmetic parts or routine maintenance 7 Adjustment of customer operated controls and features as explained in the instruction guide WHEN SERVICE IS NEEDED DURING THE WARRANTY PERIOD 1 Contact DPC using the contact us link instructions found at www dpcav com Please provide the model name serial number purchase date and specific detail...

Page 12: ... Range 1 On 2 Off S S S S Low Battery Alert Beep Range 1 On 2 Off S L Main Low Battery Voltage N Range 6 to 24 VDC in 1 volt increments S S L Fractional Low Battery Voltage n Range 0 to 0 9 VDC in 0 1 volt increments S S S L Switching Sensitivity Range 1 Very Low 2 Low 3 Normal 4 High 5 Very High S S L L Video Balance Adjustment Range 1 On 2 Skip exit ...

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