Radar GSSI SIR 4000 GPR Controller


The SIR® 4000 is GSSI’s first high-performance GPR data acquisition system designed to operate with analog and digital antennas. This evolutionary step allows true versatility and flexibility by supporting a wide range of users, beginner to advanced, in numerous applications.

The SIR 4000 incorporates advanced display modes and filtering capabilities for ‘in-the-field’ processing and imaging. Fully integrated, the system provides a simple user interface, plug-and-play GPS integration, and WiFi enabled data transfer capabilities.

Ideal for multiple applications; utility designation, concrete inspection, mining and geology, environmental assessment, archaeology and forensics.

AntennasCompatible with all GSSI antennas
Number of Channels

Records data from 1 single-frequency antenna or 
1 dual-frequency antenna

Data Storage32 GB
DisplayEnhanced 10.4" LED display with internal high brightness, 
Active matrix 1024 x 768 resolution and 32-bit color
GPSData logged internally
Display ModesLinescan, Linescan plus O-scope, Wiggle trace
Full 3D, 256 color bins are used to represent the amplitude and polarity of the signal
Data Acquisition
Data FormatRADAN (dzt)
Output Data Format32-bit
Scan IntervalUser-selectable, up to 4000 scans/sec
Number of Samples per Scan256, 512, 1024, 2048, 4096, 8192, 16384
Operating ModesContinuous (time) or survey wheel (distance triggered)
or point mode
Time Range0-20,000 nanoseconds full scale, user-selectable
Gain: manual adjustment from -42 to +126 dB
Number of segments in gain curve is user-selectable from 1 to 8
Standard Real-Time FiltersInfinite Impulse Response (IIR) - Low and High Pass, vertical and horizontal
Finite Impulse Response (FIR) - Low and High Pass, vertical and horizontal
Advanced Real-Time FiltersMigration, Surface Position Tracking, Signal Noise Floor Tracking, Adaptive Background Removal
Automatic System SetupsStorage of an unlimited number of system setup files for different survey conditions and/or antenna deployment configurations
Automatic Antenna RecognitionAutomatic recognition of Smart Antennas to allow maximum compliant transmit rate
 English, Chinese, Japanese, French
Operating Temperature-20°C to 40°C external (14°F to 104°F)
BatteryInspired Energy Ni2020ED, 3 hour runtime (battery life dependent on level of display brightness)
Transmit RateUp to 800 KHz (International)
US/Canada and CE rates depend on antenna model
Available PortsAntenna inputs analog and digital (one at a time), DC power input, Serial RS232 (GPS port), Accessory connector, HDMI video output, Ethernet to PC, USB 2.0 port, mini USB
EthernetRJ45 100BT Ethernet
USB HostUSB host with external keyboard support, USB flash drive support and USB HUB support
Dimensions14x10x2.75 in (36x25x7 cm)
Weight10 lbs (4.53 kg) including battery
Relative Humidity<95% non-condensing
Storage Temperature-40°C to 60°C (-40°F to 140°F)



19 x 14 x 8 inches


27 lbs

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