Model 4455 4th Gen Digital Multi-band Rf Receiver Dual Channel With Diversity Combiner
- Exceptionally wide dynamic range
- Network direct mode!
- Configured to accept your IRIG Chapter 7* downlink, bit/Frame synchronize
- Output your IRIG Chapter 10/11* UDP packet to your favorite Analysis package or our Acroamatics Decoms or Wideband Network recorder simultaneously.
- Link Improvements & Noise Mitigation
- Low-Density Parity Check (LDPC*) coding to improve link margin while using less bandwidth,
- Adaptive Equalization (AEQ*) to mitigate multipath distortion. Mitigate noisy/congested environments through the use of
- Advanced Diversity Combiner Functions (AGC & Data Quality)
- (Watch our Video/View Performance Evaluation)
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 1U Rack Mountable Chassis is available in a dual channel configuration with 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.
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.
RF Frequency LL, UL, LS, US, and C Bands – see features on page
Noise Figure < 8 dB Max, 4 dB typ.
IF Filters Selectable filter bandwidths (Standard set provided)
Dynamic Range > 90 dB
Input Impedance 50 Ohms
VSWR < 2:1
IF Acquisition / Tracking Range >± 255 kHz
Loop Bandwidth 0.01% to 1% of Bit Rate (Analog PM 2 Hz to 20 kHz)
PM Demodulator
Frequency Response 100 Hz to 20 MHz
Modulation Index 0 to 3.0 Radians
PM Demodulator
Frequency Response 100 Hz to 20 MHz
Modulation Index 0.5 to >100%
Deemphasis NTSC/PAL
PSK Demodulators
Types 1 IF, 2 SC *
Modulation Waveforms BPSK, QPSK, OQPSK, AUQPSK *, GMSK *, SOQOSK (ARTM Tier 1)
Locking Threshold 6 dB Eb/No
PCM/FM Demodulator (ARTM Tier 0)
Data Rate 10 bps to 10 Mbps– Standard (20 Mbps *)
Multi-h CPM (ARTM Tier 2)* 100Kbps to 40 Mbps
Space Time Code (STC)* 100kbps to 40Mbps
8PSK*/16APSK* 100kbps to 40Mbps
Bit Rate 50 bps to 10 Mbps PCM/FM & BPSK (20 Mbps *)
100 bps to 20 Mbps QPSK/SOQPSK (40 Mbps *)
Input Codes NRZ-L/M/S; Biϴ-L/M/S, RNRZ (Other codes available as needed)*
Output Codes NRZ-L/M/S; Biϴ-L/M/S, RNRZ (Other codes available as needed)*
Decoders * Viterbi Rate 1/2, 2/3*, 3/4*, 7/8* ; Reed Solomon*, Concatenated*, LDPC* 1/2, 2/3, 4/5, 7/8
Derandomizer/Descrambler IRIG/CCSDS/V.35 / V.36 (CCITT/ Intelsat)
Analog
TTL, RS422
Ethernet Data Output (IRIG 218*, IRIG-106 Ch-10*, HDLC/AX.25*)
Encapsulated Data & Data Quality that supports GDP & IRIG Best Source Selector *
STATUS OUTPUT:
Signal Level, Freq Offset, BS Lock, BS Eb/No, FEC Lock, FS Lock, Phase Deviation, Composite Lock, AGC, Carrier Lock, Demod Lock, EQ Cntrl, ERO MDO, Code Word Count, Corrected Count, Decode Fail Count
- Model 4455 4th Gen Digital Multi-band Rf Receiver Dual Channel With Diversity Combiner Datasheet
- 4 Input Diversity Combiner / Array Processor Overview
- IRIG 106 Chapter 7 & Chapter 10/11 TMoIP Support Overview
- IRIG 218-20 Telemetry Over Internet Protocol Support
- NEW! 70MHz Test Modulator Output function