TELEMETRIX 400 WAVEFORM SIGNAL GENERATOR (T400TSS)
OVERVIEW
 The RT Logic Telemetrix® Waveform Signal Generator (T400TSS) is a modular software defined telemetry simulator command formatter and signal generator.
The system’s flexible architecture allows the T400TSS to support many different signal simulation missions using an extensive standard feature set. All signal processing is performed in software and Field-Programmable Gate Arrays (FPGAs). The system is capable of telemetry simulation or command uplink processing. Standard operating frequencies include S-band and L-band, 70 MHz, and Baseband. Other frequency bands are supported through options.
APPLICATION
 The T400TSS is well suited for testing telemetry subsystems within satellite ground stations, missile and satellite factories, and calibration laboratories. The T400TSS can be used as a replacement for legacy telemetry signal simulators or for new simulation applications. The standard packaging is a 2U high, 19-inch rack-mount unit, with a 1U drawer with keyboard and fl ip-up monitor.

The highly modular and flexible architecture allows the T400TSS to support multiple encoding standards and modulation schemes, including FM, PM, FSK, BPSK, QPSK, OQPSK (SQPSK), UAQPSK, SOQPSK (MIL-STD and TG). Continuous frequency (Doppler) sweeping with selectable offsets and rates enables receiver testing against expected signal dynamics. Variable amplitude profiles enable further receiver testing for acquisition and lock thresholds, Automatic Gain Control (AGC) performance, and fading performance. Amplitude and phase profiles can be combined for accurate and repeatable fading tests. A built-in Bit Error Rate (BER) tester, with clock and data inputs, is included for standalone testing of telemetry receivers.

The T400TSS can be controlled through the local RT Logic Graphical User Interface (GUI), using either a local monitor or over Ethernet using a networked computer. The unit can also be controlled from third-party software applications using documented Ethernet interfaces to the T400TSS software.
FEATURES
L/S-Band 70MHz, Baseband Output Frequencies Standard, Other Bands Optional

FM, PM, FSK, BPSK, QPSK, OQPSK (SQPSK), UAQPSK, SOQPSK (MIL-STD and TG)

BPSK Subcarrier Phase Modulated Onto A Carrier

Command Processing In SGLS (FSK/AM) And USB (BPSK Subcarrier) Formats

PCM Encoding (Including NRZ-L, NRZ-M, NRZ-S And BIO-L, BIO-M, BIO-S)

 Convolutional Encoding (Rate 1/2, K=7)

Data Rates Up To 20 MSymbols/sec

Continuous Doppler Simulation (20 MHz Range And Greater Than ±100 kHz/sec Doppler rate)

Integrated BERT

Realistic Simulation of Propagation Path Effects when Integrated with the T400CS Channel Simulator
BLOCK
DIAGRAM


SPECS
Telemetry Modulation
  • Modulation Types: PM, FM, AM, FSK (PCM/FM),BPSK, QPSK, OQPSK (SQPSK), UAQPSK, SOQPSK (MIL-STD), SOQPSK (TG)
  • Symbol Rates: Up To 20 Msps
  • Bandwidth: 40 MHz
  • Two PM Subcarriers
  • Subcarrier Modulation: BPSK
  • Subcarrier Frequency: 1 kHz To 19 MHz
Command Generator/Modulator
  • FSK/AM (SGLS)
  • BPSK Subcarrier (USB)
Data Encoding
  • PCM Formats: NRZ-L, NRZ-M, NRZ-S, BIO-L, BIOM, BIO-S, DBIO-M, DBIO--S, DM-M, DM-S
  • Data Rates: 10 bps To 20 Mbps NRZ, 10 bps To 10 Mbps Bi-Phase
  • Data Randomization
  • Convolutional Encoding: Rate ½, K=7
Pattern Generation
  • 15 Standard PRN Patterns (23 To 223)
  • Constant Or Alternating 1/0
  • User Defined
  • Error Generation
  • User File With Looping
Optional Receive
  • Command Echo Check
  • Loopback
Intermediate Frequency Telemetry/Command
  • IF Output Frequency: 50 MHz To 90 MHz
  • Tuning Resolution: < 0.1 Hz
  • IF Output Level: -55 dBm To -5 dBm
Radio Frequency Output
  • S-Band Agile Upconverter: 1650 MHz To 2400 MHz
  • RF Output Power: -115 dBm To +15 dBm
  • Gain Stability: ± 0.25 dB Over 24 hours
 Carrier Sweeping
  • Profiles: Single Sweep, Triangle
  • Sweep Range: Continuous Within Modulation Bandwidth
  • Sweep Resolution: <0.1 Hz
  • Profiles Implemented With A Point And Slope Every Millisecond
Amplitude Profiles
  • >30 dB Vernier Adjustment .01 dB Resolution
  • >90 dB Total Adjustment
I/O
  • RF, IF, Or Baseband Output
  • I or Q Channel Simulated Telemetry Data And Clock Input (TTL Or RS-422)
  • Ternary Or Binary Command Data And Clock
  • Baseband Input For PM Or FM Modulation
  • Data And Clock Input To BER Tester
Integrated Bit Error Rate Testing (BERT)
  • 15 Standard PRN Patterns (23 To 223)
Frequency Reference Input
  • 5 MHz Or 10 MHz
cPCI Processor Board
  • Flash Or Hard Disk
  • 10/100 Mbps Ethernet Interface
  • Monitor/Keyboard/Mouse Interface
Control And Monitoring
  • Ethernet TCP/IP Remote M&C Interface
Operating Environment
  • 0 ºC To 50 ºC
  • 10% To 90% Relative Humidity
Storage Temperature
  • -10 ºC To +60 ºC
Mechanical
  • 2U 19” Rack-Mount Unit