Digital RF Receiver
The Model 4455 Digital RF Receiver is a state-of-the-art receiver that provides a compact, cost-competitive, flexible solution to a wide variety of communications link scenarios. The 3U Rack Mountable Chassis is available in a dual-channel configuration with a diversity combiner. Each channel is completely independent and is able to acquire on three (3) RF Bands: S Band, Upper L Band, Lower L Band, and optional C Band or P (CIF) Band. Other Multi-Band options are available.
The demodulation process, as well as the baseband bit synchronization process, is totally performed in the digital domain. Signal acquisition is performed by scanning the IF within the programmed acquisition band centered about the selected Carrier frequency. The Input Waveform is additionally scanned for acquisition at the subcarrier frequencies. Once signal acquisition is complete, synchronized signal tracking is performed, whereby continuous validation of the lock state is maintained.
Dual-Channel 4th Gen Receiver with Diversity Combiner
Wide RF Frequency Coverage Including Lower L, Upper L, S, C & CIF Bands
3U Rack-Mountable Chassis, with Extended I/O Configuration & New Modern Browser Based GUI with Touchscreen display
Advanced Noise Mitigation & FEC Including: Viterbi, *LDPC Coding, *Reed Solomon, * Adaptive Equalization, and Advanced Diversity Combining Functions (AGC & DQ)
Multi-Waveform Demodulation Including: PCM/FM, SOQPSK, BPSK, QPSK, OQPSK, ARTM Tier 0, 1 and optional *ARTM Tier 2 & *STC
Ethernet Outputs Including IRIG 218-10 & 20, IRIG-106 Chapter 10/11*, Chapter 7 Support*
ADDITIONAL FEATURES
- Encapsulated Data Output for Best Source Selection Including RCC DQE/DQM & GDP* DQE
- Antenna Tracking & Control Support (AM/AGC/DQ)
- Dual Channel w Pre-D* & Post-D Combiner
- High Dynamic Range: >90 dB
- Noise Figure: < 8 dB, 4dB Typ.
- 3 Demodulators (Per Channel)
- 1 RF, 2 SC* (Per Channel)
- 2 Bit Synchronizers (Per Channel)*
- 50 bps to 10 Mbps BPSK (20 Mbps*)
- 5 bps to 10 Mbps PCM/FM (20 Mbps*)
- 50 bps to 20 Mbps QPSK (40 Mbps *)
- RF Frequencies
- S- Band 2185 MHz to 2485 MHz (Std)
- UL-Band 1675 MHz to 1850 MHz (Std)
- LL-Band 1427 MHz to 1545 MHz (Std)
- P-Band 100 MHz 1150MHz *
- C-Band 4400 MHz to 5250 MHz *
- IF 100Hz to 80 MHz*
- Other Frequencies Available
- 2 Frame Synchronizers per Channel
- 70 MHz, IF Inputs & Outputs
- Tape /Playback (IRIG 106) Inputs & Outputs
- Forward Error Correction (FEC)
- 2 Viterbi Decoders R=1/2, 2/3*, 3/4*, 7/8*
- Reed-Solomon -CCSDS*
- Concatenated Viterbi/Reed-Solomon w interleaving*
- LDPC- IRIG/CCSDS* R=1/2, 2/3*, 4/5*, 7/8*
- IRIG-B & 10MHz ref. inputs
- Adaptive Equalization – All waveforms*
- BER measurement; test & real time
* OPTIONAL Features
LINK Improvements & Noise Mitigation
A variety of optional FEC decoders are available, and two fully programmable frame synchronizers (pattern detection) are provided with the bit synchronizer option. The MD4455 receiver can specifically be configured to mitigate noisy/congested environments through the use of
- Low-Density Parity Check (LDPC*) coding to improve link margin while using less bandwidth,
- Adaptive Equalization (AEQ*) to mitigate multipath distortion.
- Advanced Diversity Combiner Functions (AGC & Data Quality) for superior performance in the presence of multi-path
An Encapsulated data and data-quality output may be included that supports the GDP Best Source Selector products. RCC DQE/DQM is also supported.
Network Direct Mode!
The MD4455 Receiver can optionally be configured to accept your IRIG Chapter 7* downlink, bit/Frame synchronize, and output your IRIG Chapter 10/11* UDP packet to your favorite Analysis package or our Acroamatics Decoms or Wideband Network recorder simultaneously. IRIG 218-2010 & 2010 can also be accommodated directly. UDP/IP transport is provided for raw data or byte-aligned data output.
Typical Channel (CH 1, CH 2 & Combined*)
Ordering Codes
Base
| MD4455-02 (3U) 2CH | MD4455-02, 3U, Dual Channel, Telemetry Receiver, w/Touchscreen Delta PN: 830-445501-02 |
| MD4455-03 (1U) 1CH (FUTURE) | MD4455-03, 1U, Single Channel Telemetry Receiver Delta PN: 830-445501-03 |
| MD4455-01 (1U) 2CH (FUTURE) | MD4455-01, 1U, Dual Channel Telemetry Receiver Delta PN: 830-445501-01 |
| MD4455-02 (3U) 2CH | MD4455-02, 3U, Dual Channel, Telemetry Receiver, w/Touchscreen Delta PN: 830-445501-02 |
Options
| MD4455-OP-2PS | Option, adds dual Power Supplies Delta PN: 830-445502-12 |
| MD4455-OP-ARTM2 | Option, adds ARTM2 (per channel) Delta PN: 830-445502-03 |
| MD4455-OP-CH7 | Option, adds Chapter 7 (per channel) Delta PN: 830-445502-06 |
| MD4455-OP-CH10 | Option, adds Chapter 10 (per channel) Delta PN: 830-445502-07 |
| MD4455-OP-CMB | Option, adds Combiner (requires 2 Channels) Delta PN: 830-445502-01 |
| MD4455-OP-Encap | Option, adds encapsulator (per channel) Delta PN: 830-445502-09 |
| MD4455-OP-ExtMod | Option, adds External Modulation: AFM…PM/PSK (per channel) Delta PN: 830-445502-08 |
| MD4455-OP-EQ | Option, adds Equalizer (per channel) Delta PN: 830-445502-11 |
| MD4455-OP-LDPC | Option, adds LDPC (per channel) Delta PN: 830-445502-04 |
| MD4455-OP-RS | Option, adds Reed Solomon (per channel) Delta PN: 830-445502-05 |
| MD4455-OP-SIM | Option, adds simulator (per channel) Delta PN: 830-445502-10 |
| MD4455-OP-STC | Option, adds STC (per channel) Delta PN: 830-445502-02 |
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