RSS-2 Remote Source Synchroniser

The RSS-2 array source controller is a flexible and cost effective solution for the control of clustered “airgun” arrays. It is a development of the highly acclaimed and field proven RSS-1.

Each RSS-2 panel can be configured as a master or slave to eliminate common backup problems and equipment mix ups. Each RSS-2 unit can control up to 8 Source Interface Units (SIU) to fire up to 32 airguns.

RSS2 Datasheet

Main Features
  • Automatic source array synchronisation
  • Lightweight control umbilical
  • Each unit may control up to 32 airguns
  • Timing accuracy 0.1ms
  • Digital source signature telemetry
  • Accepts any transducer signal
  • GPS time stamp option
  • Source switching automatically controlled from within acquisition system
  • SEG-Y recording
  • PC control via USB
  • Standalone operation with GSP-1 or with third party acquisition systems
  • Synchronisation from hydrophone as well as from timing coils
  • New SIU output analogue hydrophone signal using AHA

The source controller interfaces via USB to any Windows computer.  Firing delays are adjusted automatically or may be set manually if required.  The unit will interface with all common air gun types and has an inbuilt constant-current source, for use with Bolt transducers.  Timing can be made from zero crossing or peaks and individual polarity can be switched to overcome wiring errors. Slave units may be divided for multi-source and sequential firing.

High resolution source monitor signatures are transmitted to the master RSS-2 via a digital radio modem.  Each individual gun signature is displayed at the slave location and the timing information for each gun is transmitted across to the master unit for error reporting.  If available, airgun pressure may be displayed.  A GPS time stamp option is also available.

In addition to the usual oscilloscope style display of transducer signatures, simple bar indicators show timing error and transducer amplitudes.  A gun performance report is produced automatically at the end of each survey line.

SIU Source Interface Unit (up to 8 used with each RSS-2 panel)

Packaged within a water & shock proof unit, each interface unit synchronises up to 4 sources.

The latest 2013+ SIU’s also give the option to output analogue hydrophone signal using AHA.


RSS-2 Specifications  
Number of guns: 4 per SIU, maximum 32
Control: PC via USB port
Transmission: Radio modem
Firing integrity: Encoded multiple tone sequence
Sensor type: Hydro, timing coil, Bolt sensor
Synchronisation: Better than 0.1ms
Gun firing pules: 60V (SELV compliant)
Gun firing pulse width: Programmable
Gun fire minimum interval: > 2s
A/D Converter: 24 bit Delta-Sigma
Power: 90-260V AC or 12V DC
Operating temp: 0-40C (SIU-10 to 50)
Dimensions: 3U 19” rack mount
Weight (RSS-2 Panel): 36.4 lbs (16.5 kg)