RDMS™ Compact Receiver-Combiner

The Industry’s Premier Receiver Takes to The Air

The highest-performing telemetry receiver on the market is now available in a compact, flight-ready package. Experience the industry’s fastest synchronization, best SOQPSK-TG detection, premier Best-Channel Selector and Adaptive Equalizer, and all the advantages of diversity combining – anywhere your test article takes you.

Key Features

  • Complete Receiver – RF to Bits — A single-box solution that accepts RF signals and delivers baseband clock and data. No external add-ons required.
  • Rugged, Space-Efficient Design — Ultra-compact 52 cubic-inch chassis affords flexibility with system integration.
  • Space Time Coding (STC) with SOQPSK Mode — Space-Time Coding (STC) operates with Quasonix STC-enabled transmitters to eliminate the dropouts caused by transmit antenna pattern nulls due to inter-antenna interference.
  • Low Density Parity Check (LDPC) with SOQPSK Mode — Low Density Parity Check coding operates with Quasonix LDPC-enabled transmitters to improve link margin by up to 9 dB, while still using 22% less bandwidth than PCM/FM at the same payload data rate; fully integrated forward error correction system.
  • Data Quality Encapsulation (DQE)/Data Quality Metric (DQM) — Data Quality Encapsulation (DQE) is a process of bundling Data Quality Metric words with payload data, including a sync word to aid BSS time alignment; built-in real-time DQM display via the browser interface.
  • Best-Channel Selector (BCS) — Combiner data output seamlessly selects the best channel (Ch1, Ch2, or Pre-Detection Diversity Combiner) based on DQM.
  • Pre-Detection Multi-Mode Diversity Combiner — Provides Maximal Ratio Combining with gain virtually indistinguishable from theory. Also features a revolutionary dynamic time alignment function which increases the allowable time skew between channels by over 1300 nanoseconds.
  • Built-in Integrated Three-channel Spectrum Analyzer — Spectrum analyzer shows frequency domain view for up to three channels simultaneously, via the browser interface.
  • Modulation Index Tracking* for PCM/FM — Maintains superior BER performance even if the received signal’s modulation index varies by as much as 500%, a breakthrough for tracking legacy analog transmitters (*patented).
  • Phase Noise Compensation — Optimizes demodulator performance for use with legacy TM packs and transmitters with excessive phase noise.
  • Best SOQPSK-TG Detection in the Industry — RDMS’ trellis detection for SOQPSK-TG yields improvements of 2 dB or more over the competition’s single-symbol detectors.
  • Easy Field Updates — Software and firmware updates – free for the lifetime of your receiver – can now be installed by the customer on site.
  • Future-Proofing Simplified — Upgrades such as new DSP and GUI features can be added with a simple file download while your receiver is still in the test article.
  • True Trellis Demodulation in all ARTM Modes — Provides true multi-symbol trellis detection in all three ARTM modes for optimal demodulation.
  • 3.5 to 5 dB Improvement in PCM/FM Performance — Improves BER performance by 3.5 to 5 dB over the best single-symbol demodulators, to within 0.2 dB of the theoretical limit.
  • Lowest Noise Figure — Typical 3.5 dB noise figure bests all other ARTM receivers on the market, hands down.
  • Rapid Synchronization — Synchronizes up to 100 times faster – and maintains sync at lower signal-to-noise ratios – than any other ARTM demodulator.
  • Available with Adaptive Equalization — Powerful decision-directed equalizer mitigates multipath distortion; Reduces dropouts caused by multipath reflections.

Product Datasheets and Catalogs

TypeTitleUpdatedDescriptionVersionKeywords

RDMS™ Compact Receiver-Combiner Datasheet2023.12.11Features, block diagram, overview of the remote client user interface, specifications, and possible band configurations for Quasonix’s third-generation compact (airborne) RDMS™ telemetry receiver-combiner.

ARTM
BCS
best
channel
Combiner
COMPACT
dB
dBm
demodulator
Diversity
DQM
Eb
frequency
kHz
LR
Mbps
MHz
N0
Noise
Performance
QPSK
Quality
range
RDMS
Receiver
Section
Source
sources
time

Receiver and Transmitter Space-Time Coding Datasheet2022.11.19

The Quasonix Space Time Coding Solution eliminates link outages caused by the “two-antenna problem,” improving behavior of received signal power and overall link availability.

106-17
2-E
Adopted
Advantages
Aeronautical
AFB
Air
aircraft
antenna
Antennas
applications
authors
availability
bandwidth
behavior
Bit
Brigham
cancel
caused
Center
Coded
CODING
Commander’s
Compatible
Complete
Conference
configuration
Council
creating
data
Dual
Edwards
Eliminates
Errors
expansion
Experimental
flight
Force
Ground
IF
II
Illustrations
Improves
installations
interference
International
IRIG
Kip
link
LOS
Lower
maneuvers
Michael
minimal
nulls
NV
originally
outages
Output
Part
path
Pattern
permission
power
problem
Proceedings
published
Quasonix
Radiation
Range
RDMS
receive
received
Receiver
Receivers
required
Results
Rice
signal
Signals
SNR
software
SOLUTION
SOQPSK
SPACE
Space-Time
spectrum
standard
station
STC
SYSTEM
Telemetering
Telemetry
Temple
test
TIME
transmit
Transmitter
two-antenna
University
upgrade
Upper
USA

Receiver and Transmitter Low-Density Parity Check Datasheet2023.10.12

The Low Density Parity Check (LDPC) Forward Error Correction mode improves link margin equivalent to nearly tripling the operating distance on your telemetry link.

bandwidth
bit
bits
block
channel
CHECK
code
coding
conditions
CORRECTION
crypto
data
dB
Decoding
DENSITY
devices
Eb
ERROR
even
fading
FM
Forward
fully
gain
LDPC
less
Link
LOW
maintain
Margin
N0
nearly
Operation
PARITY
payload
PCM
performance
Quasonix
rate
rates
receiver
receivers
sizes
subsystem
Synchronization
SYSTEM
telemetry
Transmitter

RDMS™ Receiver Adaptive Equalizer Datasheet2022.11.16

Describes Quasonix’s telemetry receivers’ Adaptive Equalizer Mode, which combats multipath fading.

ADAPTIVE
ARTM
BPSK
Channels
cleaner
combats
CPM
decision-directed
Digital
DPM
EQUALIZER
existing
Fading
feedback
FM
harsh
Improves
LDPC
MODE
modes
Multi-h
Multipath
NEW
operation
Option
OQPSK
PCM
Processing
programming
QPSK
Quasonix
RDMS
Receiver
RECEIVERS
Reception
results
Signal
SOQPSK
SOQPSK-TG
TELEMETRY
Tier
transmitter
upgrade
Uses

Available Options

  • Powerful adaptive equalizer mitigates multipath distortion
  • Optional contiguous tuning from 200 MHz through 2500 MHz and 4400 MHz through 5250 MHz
  • Low Density Parity Check coding, included in all receivers with SOQPSK demodulation, operates with Quasonix LDPC-enabled transmitters to improve link margin by up to 9 dB, while still using 22% less bandwidth than PCM/FM at the same payload data rate
  • Space-Time Coding (STC), included in all rackmount receivers with SOQPSK demodulation, operates with Quasonix STC-enabled transmitters to eliminate the dropouts caused by transmit antenna pattern nulls due to inter-antenna interference
  • Viterbi decoder (k=7, R=1/2), Tier 0, Legacy
  • SAW IF filters (14)

Option Datasheets and Guides

TypeTitleUpdatedDescriptionVersionKeywords

Receiver and Transmitter Space-Time Coding Datasheet2022.11.19

The Quasonix Space Time Coding Solution eliminates link outages caused by the “two-antenna problem,” improving behavior of received signal power and overall link availability.

106-17
2-E
Adopted
Advantages
Aeronautical
AFB
Air
aircraft
antenna
Antennas
applications
authors
availability
bandwidth
behavior
Bit
Brigham
cancel
caused
Center
Coded
CODING
Commander’s
Compatible
Complete
Conference
configuration
Council
creating
data
Dual
Edwards
Eliminates
Errors
expansion
Experimental
flight
Force
Ground
IF
II
Illustrations
Improves
installations
interference
International
IRIG
Kip
link
LOS
Lower
maneuvers
Michael
minimal
nulls
NV
originally
outages
Output
Part
path
Pattern
permission
power
problem
Proceedings
published
Quasonix
Radiation
Range
RDMS
receive
received
Receiver
Receivers
required
Results
Rice
signal
Signals
SNR
software
SOLUTION
SOQPSK
SPACE
Space-Time
spectrum
standard
station
STC
SYSTEM
Telemetering
Telemetry
Temple
test
TIME
transmit
Transmitter
two-antenna
University
upgrade
Upper
USA

Receiver and Transmitter Low-Density Parity Check Datasheet2023.10.12

The Low Density Parity Check (LDPC) Forward Error Correction mode improves link margin equivalent to nearly tripling the operating distance on your telemetry link.

bandwidth
bit
bits
block
channel
CHECK
code
coding
conditions
CORRECTION
crypto
data
dB
Decoding
DENSITY
devices
Eb
ERROR
even
fading
FM
Forward
fully
gain
LDPC
less
Link
LOW
maintain
Margin
N0
nearly
Operation
PARITY
payload
PCM
performance
Quasonix
rate
rates
receiver
receivers
sizes
subsystem
Synchronization
SYSTEM
telemetry
Transmitter

RDMS™ Receiver Adaptive Equalizer Datasheet2022.11.16

Describes Quasonix’s telemetry receivers’ Adaptive Equalizer Mode, which combats multipath fading.

ADAPTIVE
ARTM
BPSK
Channels
cleaner
combats
CPM
decision-directed
Digital
DPM
EQUALIZER
existing
Fading
feedback
FM
harsh
Improves
LDPC
MODE
modes
Multi-h
Multipath
NEW
operation
Option
OQPSK
PCM
Processing
programming
QPSK
Quasonix
RDMS
Receiver
RECEIVERS
Reception
results
Signal
SOQPSK
SOQPSK-TG
TELEMETRY
Tier
transmitter
upgrade
Uses

Supporting Items

ImageItemDescription

Accessory Datasheets

TypeTitleUpdatedDescriptionVersionKeywords

User Manuals and Guides

TypeTitleUpdatedDescriptionVersionKeywords

RDMS™ Receiver Scripting Guide2023.01.25

Technical guide for understanding, creating, and editing scripts for Quasonix RDMS™ receivers.

1.0

boot
command
execute
modes
operation
recording
script
scripting

RDMS™ Receiver Telnet and Serial Control Protocol Guide2022.12.12

Instructions for accessing and using Quasonix RDMS™ receivers’ serial control interface, including commands and syntax, for debugging purposes. The Telnet interface should only be accessed by advanced users. Contact Quasonix customer support before using these options.

1.0.5

AGC
channel
command
commands
configuration
enable
menu
mode
modulation
parameters
protocol
receiver
serial control interface
set
Telnet
terminal

RDMS™ Compact Receiver-Combiner Manual (Gen 3, R19)2023.12.08

Installation and operation of the Quasonix 3rd Generation Compact RDMS™ Telemetry Receiver-Combiner, updated to match RDMS™ System Version 19.3.

1.0.4

Advanced
AGC
AM
Antenna
Bit
Channel
Combiner
Compact
Dual
Error
Frequency
Generation
Menu
MHz
Mode
Modulation
Monitor
Option
Pattern
RDMS
receiver
Receiver-Combiner
Scaling
Screen
Set
Settings
Signal

RDMS™ Receiver Bit Error Rate Testing Guide2022.04.24

Instructions and commands for bit error rate testing on Quasonix RDMS™ receivers, plus guidance on using test noise (AWGN) commands.

1.0.1

AWGN
BER
BERT
Bit
Commands
Error
limit
Measurement
Noise
Test

Software Downloads

TypeTitleVersionDownloadDescriptionUpdated

Product Training Videos

TypeThumbnailTitleLengthDescriptionVideo PurposeUpdatedKeywords

Quasonix Product Lines