TELEMETRIX 1200 HDR (T1200HDR)
OVERVIEW
 The Telemetrix® 1200 HDR (T1200HDR) brings the multimission benefits of digital receiver technology to high data rate requirements. The T1200HDR provides industry-leading Bit Error Rate (BER) performance, as well as user-selectable support for a variety of waveforms and data rates. The T1200HDR supports carrier tracking, demodulation, bit synchronization, and digital processing of a dual 720 MHz or a single 1.2 GHz IF signal at data rates adjustable up to 1.7 Gbps. An optional integrated test modulator provides the ability to generate the same waveforms that are processed by the unit under normal operations. The digital signal processing implementation provides flexibility to support different demodulation and processing schemes and, unlike legacy analog implementations, requires no calibration. The soft-programmable implementation allows support for new requirements without building new hardware.

APPLICATION
 The T1200HDR supports downlink processing of BPSK, QPSK, SQPSK, and optional UQPSK and 8PSK signals. Data rates from 1 Mbps to 1.3 Gbps are supported for all modulation types, and for 8PSK rates up to 1.7 Gbps are supported. The demodulation processing is supplemented by bit synchronization (with optional Viterbi error correction), PCM code conversion, and CCSDS frame processing. For QPSK/SQPSK modulation formats, bit reinterleaving is also available. Low Density Parity Check (LDPC) and Turbo Product Code (TPC) decoding is optionally supported. Output from the unit is available as differential ECL data and clock or as frames available over a 1000BASE-T Ethernet. In addition, the demodulator optionally provides an Adaptive Baseband Equalizer (ABBE). The ABBE corrects for both linear and non-linear distortions without requiring additional bandwidth. Performance gains in the presence of distortions can be upwards of 3 dB.

The T1200HDR provides a number of sophisticated test and simulation capabilities based upon the digital implementation. Spectral and I/Q vector displays are available to aid with signal characterization and troubleshooting. A programmable FIR filter is available to optimize performance. The test modulator capability provides composite signal generation and output at 720 MHz or 1.2 GHz IF from an internal PCM simulator or external data and clock signals. A noise source and Bit Error Rate Test (BERT) capability is also available.

The unit implements a TCP/IP-based interface, allowing control, status, and data delivery over Ethernet, including spectrum and vector analysis data. The unit has been closely integrated with the RT Logic T500GT for high-rate CCSDS processing, RAID data archival, and network data distribution.

FEATURES
Digital Demodulator (BPSK/QPSK/SQPSK), Bit Synchronization, PCM Code Conversion, Ambiguity Resolution, I/Q Reinterleave, ECL Output

Optional UQPSK Or 8PSK Demodulation Capability

Optional FEC Decoding (Viterbi, LDPC, TPC)

Optional Test Modulator With Noise Injection

Optional CCSDS Ingest Processing With IRIG Timestamping

5 MHz Or 10 MHz Synchronization (External Or Internal)
MODULAR, DIGITAL IMPLEMEN-
TATION


SPECS
IF Reception
  • Input Frequency: Dual 720 MHz ±200 MHz Or 1.2 GHz ±400 MHz
  • Input Ports: 2 (Selectable)
  • Input Impedance: 50 O
  • AGC Time Constant: 1 msec
  • IF Level Variation: (< 10 dB/sec)
  • Carrier Acquisition Range: (±10 kHz To ±1 MHz)
  • Carrier Loop Bandwidth: 0.1% Of The Symbol Rate
Demodulation
  • Demodulation: BPSK, QPSK, OQPSK (SQPSK), UQPSK, 8PSK, GMSK
  • Continuously Tunable From 1 Mbps To 1.3 Gbps (QPSK, SQPSK) And From 3 Mbps To 1.7 Gbps (8PSK)
  • Maximum Symbol Rate: 600 Msps
  • Synchronization Threshold: (< 1 dB (Eb/No))
  • Acquisition Time: (< 0.25 sec)
  • IF Level And Doppler Measurement
  • Maximum Doppler Rate: (< 10 kHz/sec)
  • BER Degradation At 600 Mbps And BER 1E-6: <1 dB
Decoding
  • Viterbi (1/4, 1/2, 3/4, 5/6, 7/8, etc.)
  • (8160,7136) LDPC
  • (128,120)2 TPC
  • 4D TCM
  • Reed-Solomon (CCSDS, DVB)
  • Custom
 Bit Synchronization
  • Acquisition Range: ±0.3% Of Symbol Rate
  • PCM Codes: NRZ-L/M/S, DNRZ, Bi-Phase-L
  • Filters: Matched, I & D, Custom FIR
  • Eb/No Measurement
  • Output Ports: Separate Or Merged I & Q Channels
  • Output: Differential ECL
CCSDS Processing Option
  • Frame Synchronization
  • Reed-Solomon Or LDPC Error Correction
  • Raw Data Archive
  • Ethernet-Based Data Distribution
Test Modulator Option
  • Carrier Frequency: 720 MHz Or 1.2 GHz ±100 MHz
  • Output Level: -10 dBm To -40 dBm (1 dB Steps)
  • Integrated Noise Generator
  • Noise Density: -93 dBm/Hz To -132 dBm/Hz (1 dB Steps)
  • Modulation: BPSK, QPSK, OQPSK (SQPSK), UQPSK, 8PSK, GMSK
  • PCM Simulation: ASCII-Coded File On Hard Disk Or Pseudo-Random Pattern
  • BER Test Capability
Physical
  • 7 x 19 x 22 Inches (H x W x D)
  • Power Supply: Auto Range 90-265 VAC, 47-63 Hz
  • Maximum Consumption: 1.5 A Peak, 220 V
  • Operating Temperature: 10 °C To 40 °C
  • Storage Temperature: -20 °C To 60 °C
  • Relative Humidity: 40% To 90% Noncondensing