Number of channels (smaller unit) : 4-24 in steps of 4
Number of channels (larger unit) : 4-48 in steps of 4
Additional channels : Easily obtained by linking two or more units together
Up-hole channel : Yes
Sampling rate (selectable) : 25, 50, 100, 200, 500, 1000 & 2000 μs
Record length (selectable) : 128, 256, 512, 1024, 2048, 4096, 8192 or 16384 samples per trace equivalent to: 3,2 ms – 32,7 s
Pre-trig record (selectable) : 0 – 100 % of record length
Pre-stack correlation : Yes, cross correlation with reference or any other channel
Delay time Related to sampling rate : May be set (for example) from:
+ 0 – 0,8 s at 25 μs sampling rate
+ 0 –131 s at 2ms sampling rate
Stacking : 32 bits, up to 999 impacts
Unstack : Remove last shot from stack
Trigger inputs : Trigger coil, make/brake, geophone, TTL
A/D converter resolution : 21 bits
Dynamic range (theoretical / measured) : 126 / 114 dB
Max input signal : 500 mV p-p
Frequency range : 1-4000 Hz (at 25 μs sampling rate)
Total harmonic distortion : - 80 dB
Crosstalk : - 86 dB
Input impedance : 3 kΩ
Noise monitor : Amplitude
Analog filters : Low cut (selectable): 12 or 24 dB / octave, 16 steps from 12 to 240 Hz
Notch : 50 or 60 Hz specify when ordering
Anti-aliasing : set automatically based on sampling rate
Post recording features
Digital filters : Band-pass, low-pass, high-pass, band-reject & remove DC offset
Spectrum analysis : Any single trace, FFT analysis
Velocity Analysis : On-screen analysis of refractor velocity
First-arrivals picking : Automatic or manual, Times can be saved with record
Correlation : cross correlation
Processor, RAM and hard disk
Processor : Low power AMD LX800, 500 MHz
Operative System : Windows XP
Internal RAM : 1GB (DDR SO-DIMM module)
Hard disk capacity : at least 60 GB (2,5 “ EIDE drive)
Memory card reader : SD, Compact flash , MMC, Memory stick, Smart media etc.
Display : 8,4 “ Active TFT LCD, full colour, daylight visible
External display port : VGA output
I / O port : 3 USB 2.0 ports
Network interface : Ethernet 10 / 100 Mbps, RJ-45 IP 67
Power : 10 – 30 V DC external battery
Power consumption : 36 W (24 ch) or 60 W (48 ch)
Ambient temp (operating 24 ch) : 0 to + 50 oC
Ambient temp (operating 48 ch) : 0 to + 45 oC
Ambient temp (storage) : - 40 to + 80 oC
Casing : Rugged cast aluminium, meets IEC IP 66
Weight, 24 channels : 16 kg
Weight, 48 channels : 23 kg
Dimensions, 24 ch unit : 480x260x330 mm
Dimensions, 48 ch unit : 480x260x470 mm |