Difference between revisions of "DEC engineering drawing numbers"
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'''DEC drawing codes''', embedded in the drawing numbers of [[Digital Equipment Corporation|DEC]] engineering drawings, allow one to discern what kind of information is conveyed in that particular drawing. A DEC drawing number will be of the form AA-bbbb-x-yy, where 'AA' is the drawing code, 'bbbb' is the device which the drawing is of, 'x' (a digit) is the 'manufacturing series', and 'yy' is the page number within the set. They are often seen with a preceding single-letter code, which indicates the size of the original drawing. | '''DEC drawing codes''', embedded in the drawing numbers of [[Digital Equipment Corporation|DEC]] engineering drawings, allow one to discern what kind of information is conveyed in that particular drawing. A DEC drawing number will be of the form AA-bbbb-x-yy, where 'AA' is the drawing code, 'bbbb' is the device which the drawing is of, 'x' (a digit) is the 'manufacturing series', and 'yy' is the page number within the set. They are often seen with a preceding single-letter code, which indicates the size of the original drawing. | ||
| + | |||
| + | ==Drawing codes== | ||
The list of drawing codes, as of circa 1964, was: | The list of drawing codes, as of circa 1964, was: | ||
| Line 11: | Line 13: | ||
|- | |- | ||
| BD || Functional Block Diagram | | BD || Functional Block Diagram | ||
| + | |- | ||
| + | | BS || Block Schematic | ||
|- | |- | ||
| CD || Cable Diagram | | CD || Cable Diagram | ||
| + | |- | ||
| + | | CL || Cable List | ||
|- | |- | ||
| CP || Component List | | CP || Component List | ||
|- | |- | ||
| − | | CS || Circuit Schematic | + | | CS || [[Circuit]] Schematic |
| + | |- | ||
| + | | DL || [[Diode]] List | ||
|- | |- | ||
| FD || Flow Diagram | | FD || Flow Diagram | ||
| Line 23: | Line 31: | ||
|- | |- | ||
| LO || Layout Drawing | | LO || Layout Drawing | ||
| + | |- | ||
| + | | ML || [[Module]] List | ||
|- | |- | ||
| MU || Module Utilization Drawing | | MU || Module Utilization Drawing | ||
|- | |- | ||
| PL || Parts List | | PL || Parts List | ||
| + | |- | ||
| + | | RL || Replacement List | ||
|- | |- | ||
| RS || Replacement Schematic | | RS || Replacement Schematic | ||
|- | |- | ||
| SD || Specification Drawing | | SD || Specification Drawing | ||
| + | |- | ||
| + | | TL || [[Terminator]] List | ||
|- | |- | ||
| TD || Timing Diagram | | TD || Timing Diagram | ||
| Line 59: | Line 73: | ||
|- | |- | ||
| IA || ? Assembly? | | IA || ? Assembly? | ||
| + | |- | ||
| + | | IS || ? Specification? | ||
|- | |- | ||
| MD || Module ? | | MD || Module ? | ||
| − | |||
| − | |||
|- | |- | ||
| MH || Module [[Engineering Change Order|ECO]] History | | MH || Module [[Engineering Change Order|ECO]] History | ||
| Line 77: | Line 91: | ||
|- | |- | ||
| WT || Wiring ? | | WT || Wiring ? | ||
| + | |} | ||
| + | |||
| + | ==Drawing sizes== | ||
| + | |||
| + | Drawings are usually reduced to 11"x17" (A3, in contemporary paper sizes) for inclusion in print sets sent to customers. The list of drawing size codes for the originals, as of circa 1962, was: | ||
| + | |||
| + | {| class="wikitable" | ||
| + | ! Code !! Size | ||
| + | |- | ||
| + | | A || 8-1/2" x 11" | ||
| + | |- | ||
| + | | B || 11" x 17" (twice 'A') | ||
| + | |- | ||
| + | | C || 17" x 22" (twice 'B') | ||
| + | |- | ||
| + | | D || 22" x 34" (twice 'C') | ||
| + | |- | ||
| + | | E || Larger than 'D' (most are 30" x 42") | ||
|} | |} | ||
Revision as of 13:47, 13 May 2021
DEC drawing codes, embedded in the drawing numbers of DEC engineering drawings, allow one to discern what kind of information is conveyed in that particular drawing. A DEC drawing number will be of the form AA-bbbb-x-yy, where 'AA' is the drawing code, 'bbbb' is the device which the drawing is of, 'x' (a digit) is the 'manufacturing series', and 'yy' is the page number within the set. They are often seen with a preceding single-letter code, which indicates the size of the original drawing.
Drawing codes
The list of drawing codes, as of circa 1964, was:
| Code | Meaning |
|---|---|
| AD | Assembly Drawing |
| AR | Arrangement Drawing |
| BD | Functional Block Diagram |
| BS | Block Schematic |
| CD | Cable Diagram |
| CL | Cable List |
| CP | Component List |
| CS | Circuit Schematic |
| DL | Diode List |
| FD | Flow Diagram |
| IC | Interface Cabling Diagram |
| LO | Layout Drawing |
| ML | Module List |
| MU | Module Utilization Drawing |
| PL | Parts List |
| RL | Replacement List |
| RS | Replacement Schematic |
| SD | Specification Drawing |
| TL | Terminator List |
| TD | Timing Diagram |
| UA | Unit Assembly |
| WD | Wiring Diagram |
| WL | Wiring List |
Additional drawing codes, seen in later print sets, and their apparent meaning (where possible), are:
| Code | Meaning |
|---|---|
| AH | Assembly Hole Layout |
| AL | Accessory List |
| CO | Co-ordinate Hole Location List |
| DC | Decal ? |
| DD | Drawing Directory |
| EC | Etch Cut |
| IA | ? Assembly? |
| IS | ? Specification? |
| MD | Module ? |
| MH | Module ECO History |
| PC | PCB ? |
| PS | Parts ? |
| SP | Specification? Procedure? |
| TC | Table of Contents |
| UA | Unit? Assembly? |
| WT | Wiring ? |
Drawing sizes
Drawings are usually reduced to 11"x17" (A3, in contemporary paper sizes) for inclusion in print sets sent to customers. The list of drawing size codes for the originals, as of circa 1962, was:
| Code | Size |
|---|---|
| A | 8-1/2" x 11" |
| B | 11" x 17" (twice 'A') |
| C | 17" x 22" (twice 'B') |
| D | 22" x 34" (twice 'C') |
| E | Larger than 'D' (most are 30" x 42") |
