The EDL, made by EARTH DATA (U.K.), is a digital recording system for stand-alone use.
Adaptor cables are available for all types of broadband seismometers belonging to the DEPAS pool.
Digitiser SetUp and Control can be done via serial link (manufacturer software). Additionally, a GFZ-GIPP made Recorder SetUp and Status View Software (including Digitiser Parameters) is available for the use of WIN/DOS and PocketPC based field palmtops. The GFZ User Software also supports Group SetUp; and the Control functions, as Status View and Configuration File Download, are performed as one-key commands.
Data Retrieval is supported by GFZ User Software and by a set of Hard Disk Reading Adaptors. The adaptors convert IDE into SCSI for direct access to the hard disk from any LINUX PC.
A limited set of adaptors converts IDE for USB or FireWire connection. Have also an extended look at the recorder (154 kByte) and at the GFZ type casing (149 kByte).
EarthData PR6-24 Recorder, 63 units
35 Units 3 Channels (111 Units with USB connector)
28 Units 6 Channels (28 Units with USB connector)
Hard Disk, 372 units
45 Units 10.0 GByte
4 Units 20.0 GByte
33 Units 30.0 GByte
340 Units 40.0 GByte
Parameters - Input Signal
Channels 3 or 6, plus 4 auxiliary
Preamplification 1; 10 ; 0.4 (85 units only)
Clipping 1; 10 ; 0.4 (85 units only)
Digital Signal
Sampling Rate 1; 2; 4; 5; 10; 20; 25; 40; 50; 75; 100, 120; 125; 150; 200; 250; 300; 375; 500; 600; 750;
1000 sps; 3000 sps (reduced dynamic range)
Resolution MiniSEED, ASCII: 1 microVolt/digit ( @ PreAmp = 1 ) digitiser output: 3.9 nanoVolt/digit
Dynamic Range 140 dB @ 100 sps 145 dB @ 25 sps (4 Byte digitiser output 150 dB) 96 dB @ 3000 sps
(upper 2 Bytes only)
Time Keeping
Clock 1*10e-6 (TCXO)
Synchronisation GPS, continuously or cycled
Digitiser Buffer
RAM (volatile) 16 MByte
Format 4 Byte
Data Storage
Hard Disk 10.0 GByte (Data Partition 8.8 GByte, FAT 32) 30.0 GByte (Data Partition 27.3 GByte, FAT 32)
40.0 GByte (Data Partition 36.6 GByte, FAT 32)
Storage Format ASCII, upper 3 Bytes of digitiser output MiniSEED, compressed (Steim-1), based on
upper 3 Bytes 'legacy', PR2400 multiplex (equivalent to digitiser output)
Physical Parameter
Power Consumption < 1.8 Watts (GPS cycled) to 2 Watts (GPS conti) @ 3*100 sps
Weight Recorder, including disk: 4.3 kg (new series 3.75 kg
Operating Temperatures Recorder and Disk: -20 to +65 °C
Connectors (Front Panel, Hard Disk)