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DRX 600
Digital Spectrum Processing Receiver
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Habitats |
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Overview |
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In
1992, Lotek Wireless introduced the DSP 500,
the first Digital Spectrum Processor designed specifically for
use in fisheries research. In conjunction with our SRX
receivers, the DSP/SRX systems permitted near-simultaneous
detection of thousands of animals instrumented with radio transmitters
on multiple frequencies and antennas. Knowledge related to the
fine-scale movement of fishes in their natural environment and
the anthropogenic impacts on fishery resources have been advanced
accordingly.
We are very
pleased to announce the release of our newest digital wideband
radio receiver, the DRX 600. It combines the capabilities of the
DSP 500 and SRX and operates as an independent receiver. DRX 600
takes advantage of the latest advances in high speed, low power
digital signal processing technology to achieve a significant
increase in sensitivity and functional performance over any wideband
receiver currently available for use in fisheries and wildlife
research.
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| Key
Features |
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- Simultaneous detection, decoding and datalogging of Lotek
coded transmitters
- User-selectable bands from 148 to 174 MHz
- Sequentially scanning of up to 5 user-specified 1 MHz sub-bands
- Simultaneous monitoring of up to 50 user-selectable frequencies
within each sub-band
- Individually specifiable codeset for each sub-band
- User-programmable activation/de-activation for each sub-band
frequency
- Two (user programmable) frequency steps available: 12.5 kHz
or 20 kHz
- Support sequential switching for up to 8 antennas
- Individual Gain for each antenna
- Individual detection threshold for each designated frequency
within the sub-band
- Minimum sensitivity of -126 dBm
- DRX Host for receiver set up/configuration
- Configuration files consisting of all receiver settings can
be saved for uploading to multiple receivers
- Onboard GPS clock for precise synchronization amongst multiple
units
- USB interface for high speed data download to PC and PDA
- 16 Mbytes of memory enabling storage of over 1 million records
- Remote access/control via telephone, cellular or RF modem
via RS232
- Designed for remote deployment operation from an external
12-V power source.
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| Applications |
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The DRX
600 becomes the receiver of choice for any application that
requires simultaneous detection of transmitters operating on
different frequencies. Its superior signal processing and sensitivity
will optimize data collection opportunities for research that
involves monitoring the movement of animals through high-velocity
environments.
Typical
application scenarios include research related to fish passage
efficiency, survival, presence/absence, site fidelity, and habitat
utilization. It is also the ideal receiver for monitoring transmitters
from multiple projects that involve the use of more than one
codeset. Use of the DRX 600 will also facilitate transition
by users to alternate frequency bands.
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Advantages
& Benefits |
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| Feature: |
Simultaneous
monitoring of up to 50 channels within a 1 MHz sub-band |
| Advantage: |
Simultaneous
detection, decoding and datalogging of multiple frequencies |
| Benefit: |
Increased
detection probability in high traffic, and high velocity
environments
Improved
data processing efficiency |
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| Feature: |
Up to 5 user-definable 1 MHz sub-bands within a 26 MHz bandwidth (148 to 174 MHz) |
| Advantage: |
Virtually unlimited flexibility to monitor transmitters within a wide operational band |
| Benefit: |
Ability
to use receiver concurrently in multiple projects, that
use different frequencies, bands and codesets
Avoids
duplicate equipment and reduces associated costs
Selective
data display - only frequencies/ transmitters of interest
are recorded and displayed within each sub-band.
Transmitters
with different codesets can be logged. |
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| Feature: |
Minimum -126 dB sensitivity with individual gain control by antenna |
| Advantage: |
Greater
sensitivity improves detection range (6 dB translates to a
theoretical doubling of reception range in air) |
| Benefit: |
Improved
detection range and detection probability
Gain
control by antenna provides user with flexibility to tune
receiver to optimum performance based on local and application
specific conditions. |
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| Feature: |
USB interface
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| Advantage: |
High speed
data transfer |
| Benefit: |
Time saving (data transferring at 1 Mbyte/10 seconds) and reduction of project overhead costs |
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| Feature: |
DRX Host receiver software for setup & configuration |
| Advantage: |
All receiver settings and data can be viewed, modified, uploaded or downloaded via PC |
| Benefit: |
Ability
to view data and to make changes to settings for multiple receivers
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| Feature: |
16 MBytes
of Memory |
| Advantage: |
Storage
of over 1 million records |
| Benefit: |
Improved
efficiency in data collection and data retrieval
Enables greater flexibility in data recovery protocol with
corresponding reduction in associated resources |
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Specifications |
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| Operating
Voltage Range |
10
-18 V DC |
| Operating
Current |
450
mA @ 12V DC |
| Memory
Retention Battery |
5 years
shelf life |
| Operating
Temperature Range |
-20°C
to 50°C |
| Weight |
2.43
kg |
| Size |
10.5
cm x 15.5 cm x 25.0 cm |
| Data
memory |
16 MByte |
| Operating
Frequency Range |
148-174
MHz |
| Channel
Spacing |
12.5
kHz, 20.0 kHz |
| Sensitivity |
-126
dBm (@±600Hz) |
| User
Selectable Gain Control |
22.5
dB |
| Adjacent
Channel Selectivity |
Uncoded:
40 dB (Code-aided discriminator eliminates residual spectral
leakage) |
| Spurious
Response (Image) |
>95
dB |
| Dynamic
Range |
>120
dB |
| Input
Impedance |
50 ohms |
| Maximum
Input Signal Level |
0 dBm |
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| Related
Products |
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Product Sheet |
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