Precinct Conversion File Types:
| Alpha Indicators | Precinct Conversion Capability |
| PB | 1990 Census Blocks => SR |
| PC | 1990 City => SR |
| PD | RR => SR |
| PE | 1990 City => RG |
| PF | 1990 City => RR |
| PG | RR => RG |
| PR | RR => SR |
| PS | SR => RG |
| PT | SR => RR |
| PU | RR => SV |
| PV | SV => SR |
| PW | [SR => RR ; SR => RG] |
| PX | RG => RG (cross election) |
| PZ | SR => SR (cross election) |
Definitions:
RG = Original Registration Precincts (designated by County Registrar)
RR = Registration Precincts (designated by Pac Tech Data Research)
SV = Original Voting Precincts (designated by County Registrar)
SR = Consolidated Precinct (designated by Pac Tech Data Research)
1990 City = City Area (designated by US Census Department)
1990 Census Blocks = Census Blocks (designated by US Census Department)
1990 Census Tracts = Census Tracts (designated by US Census Department)
"Cross Election" = moving between election years, i.e. from 1994 geography to 1996 geography
Other Conversion File Types:
| Name | Conversion Capability |
| RR-G92-BL-C90_AD##.CNV | RRG92 => 1990 Census Blocks |
| RR-G92-BL-C90_CY##.CNV | RRG92 => 1990 Census Blocks |
Naming Convention: "origin unit"-"election and year" -"destination unit"_"coverage".CNV
Definitions:
"##" = wildcard symbol
1990 Census Blocks = Census Blocks (designated by US Census Department)
RR = Registration Precincts (designated by Pac Tech Data Research)