User Manual

Installation Manual Description of the radio telemetry equipment
SU6-R
The SU6-R is a six-channel field digitizer unit used in radio telemetry cells. It uses
a radio link to communicate with a REM. All the SU6-Rs are completely
independent and can coyer any type of field.
In the event of obstruction along an RF radio path to the REM, a simple wire
telemetry link can be used in place of the RF link.
The SU6-R uses a small, light-weight, ragged aluminum package for reliability and
reduced transportation effort.
Its main features are the following:
· A rechargeable nickel-cadmium 0NJ-Cad) battery pack.
· Analog-filter-free and ideal seismic response. Taking advantage of the large
dynamic range and the very low distortion of the SU6-Rs 24-bit-stream A/D
converter, the seismic channels are free from any analog filters. With this design,
idem seismic response with linear phase shift is achieved, as undesirable phase
shifts and temperature drifts otherwise associated with analog components are
eliminated. Also, no filter setting is required at the field level, which precludes any
unrecoverable error that might otherwise arise from incorrect filter settings.
· A low distortion built-in test generator is integrated into every SU6-R, in order to
performance a remote check of the complete acquisition performance, at full
specification, from the central control unit without any external oscillator.
· Internal memory that allows simultaneous collection and retrieval of seismic data.
Shot stacking may also be performed by the SU6-R.
· Each field unit is assigned to a specific frequency upon deployment by the
control unit.
NOTE: The SU6-R is fully compatible with SERCEL-OPSEIS SARs.
0311400 8-5