Receiver Rack
Receiver rack fitted with optional additional LRD-100 digital multi-mode receiver and LRIT USB interface module
Receiver rack with optional LRD-200B digital multi-mode receiver and LRIT USB interface module
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 and HRPT and AHRPT USB interfaces for reception of NOAA HRPT and Metop AHRPT data.
If GOES HRIT or GK-2A LRIT reception is required, a second LRD-100 receiver and an LRIT USB interface can be fitted.
Alternatively an LRD-200B receiver can be supplied instead of the LRD-100 to provide HRPT and AHRPT reception, plus GOES HRIT or GK-2A LRIT reception between polar-orbiter passes, all with one receiver.
If DMSP reception is required, a DMSP USB interface can be fitted. However GOES HRIT and GK-2A LRIT reception is then not possible unless a separate Dartcom USB LRIT receiver is supplied.
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.
- AHRPT USB interface.
- Optional DMSP or LRIT USB interface.
- USB hub and serial communications module containing 7-port USB hub, USB serial adaptors and RS-232/422/485 rotator interface.
- GPS receiver.
- Switch mode rack power supply.
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 |