HRPT/AHRPT System > Receiver Rack

Receiver rack fitted with optional additional LRD-100 digital receiver and LRIT USB interface
Receiver rack fitted with optional additional LRD-100 digital receiver and LRIT USB interface

Receiver rack with optional LRD-200B digital receiver and LRIT USB interface
Receiver rack with optional LRD-200B digital receiver and LRIT USB interface

Digital multi-mode receiver specifications
  LRD-100 LRD-200B
Signal input
range
–90dBm to –20dBm –90dBm to –20dBm
IF
conversion
Direct 70MHz, up to 50Msps, 10-bit resolution Direct 70MHz, up to 50Msps, 10-bit resolution
IF bandwidth Programmable Programmable
Supported
symbol rates
0.1–3.5Msps 0.1–3.5Msps
Demodulator
modes
BPSK, QPSK, PSK BPSK, QPSK, PSK, 8PSK, 16QAM
BPSK/QPSK
performance
BPSK/QPSK within 1dB of theoretical, 0.5dB typical BPSK/QPSK within 0.4dB of theoretical, 0.2dB typical
Convolution
decoding
Viterbi, rate ¾ Viterbi, rates ½ and ¾
RF inputs Simulator or signal, selectable Simulator or signal, selectable
Outputs 50Ω TTL clock and NRZ data 50Ω TTL clock and NRZ data
Display LCD, 16-character × 2 line LCD, 16-character × 2 line
Control
interface
RS-232 serial via USB serial adaptor RS-232 serial via USB serial adaptor

The receiver rack is supplied as standard with a single LRD-100 digital multi-mode receiver to provide reception of NOAA HRPT and Metop AHRPT data.

If continuous LRIT reception is also required, an additional LRD-100 receiver and USB interface module can be fitted, together with a dedicated antenna and XRIT Ingester software.

Alternatively a single LRD-200B digital multi-mode receiver can be supplied to provide HRPT, AHRPT and FengYun-3 L-Band reception, with LRIT reception between satellite passes.

If DMSP reception is required, an additional USB interface can be fitted to the receiver rack. However LRIT reception is then not possible unless a separate Dartcom USB LRIT receiver is supplied.

To support the proposed JPSS LRD service the digital multi-mode receivers will require a firmware upgrade, but apart from that the receiver rack is LRD ready.

Features

  • 19” 4U high Eurocard rack.
  • Plug-in modules for easy maintenance and upgrades.
  • Desk or rack mount.
  • USB connection for data, rack control and GPS receiver.
  • RS-232/422/485 connection for rotator control, or optionally via USB if serial ports are not available on the ingest PC.

Modules

  • Multi-mode receivers and LNB power supplies module containing up to two digital multi-mode receivers (one as standard).
  • HRPT USB interface module.
  • AHRPT/LRD USB interface module.
  • Optional DMSP or LRIT USB interface module.
  • USB hub and serial communications module containing 7-port USB hub, USB serial adaptors and RS-232/422/485 rotator interface.
  • GPS receiver module.
  • Switch mode rack power supply module.
Receiver rack specifications
Operating temperature 0°C to +50°C
Storage temperature 0°C to +70°C
Humidity 30% to 70% non-condensing
EMC emissions EN61000-6-4:2007 A1
EMC immunity EN61000-6-2:2005
Electrical safety LVD 2006/95/EC
EN60950-1:2006
Dimensions (W×H×D) 450×180×455mm including connector projections
Weight 14.5kg approx
Power requirements 110–240V AC @ 50–400Hz
Power consumption 150VA
Wild heat 100W


Sample Images

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