Comparison Chart
Feature group |
Feature |
Sigma |
Cableless systems with only shootblind capability |
Cableless systems with some data return capability |
Benefit of feature and related issues |
24 or 32 bit |
32 bit |
Mostly 24 bit |
Mostly 24 bit |
Limits use, especially for passive operations. |
|
Memory, address limitation |
2 TB limit |
In some cases limited to 2 or 4 GB |
In some cases requires maintaining real time link or system will not function |
2/4GB and/or need for real time link may be too restrictive. |
|
Data output |
SEGY & SEGD |
Most offer only one data format |
Most offer only one data format |
International norms vary,needing both data formats. |
|
Operating temp. range |
-40 to +85 deg C |
Most systems have more limited range |
Most systems have more limited range |
Lower temperature range restricts operations. |
|