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Longer Than Standard Parallel Cable
We have heard of successful use by our customers of SBIG CCD systems at distances of up to up to 165 feet. However, in regular
use we have operated our CCD systems at a distance of only as far as 75 feet.
Just for the record, we have no experience with "Parallel Boosters" on SBIG systems. And we prefer not to become involved with
the fabrication of custom cables. Therefore, we will provide the following as a guide for those who wish to "push the
frontiers" so to speak. Please advise us of your results at experimentation so that we may pass it onto others.
- The best cable that we know of for this application is made by "BELDEN Co." (phone 317-983-5200/5736), and is
designated "BELDEN 9937".
This cable may be found sold in rolls at regional electronics supply houses, or it may be mail ordered
This cable has shielded wire to reduce interference and signal loss.
- You will need two "DB-25" cable connectors: one Male and one Female.
These may also be found at electronic supply houses such as "Radio Shack".
These connectors should have metal covers, and solder pins for best connection.
Note this does not use a "Centronic" connector. However, adapters may be necessary.
- The Pin assignments follow:
Male Pin
(to Computer) |
Female Pin
(to Camera) |
Function |
| 2 |
0 |
Data Bits to Camera |
| 3 |
1 |
Data Bits to Camera |
| 4 |
2 |
Data Bits to Camera |
| 5 |
3 |
Data Bits to Camera |
| 18 |
18 |
Data Ground |
| 19 |
19 |
Data Ground |
| 20 |
20 |
Data Ground |
| 21 |
21 |
Data Ground |
| 22 |
22 |
Data Ground |
| 23 |
23 |
Data Ground |
| 24 |
24 |
Data Ground |
| 25 |
25 |
Data Ground |
| 6 |
0 |
Address to Camera |
| 7 |
1 |
Address to Camera |
| 9 |
9 |
Strobe to Camera |
| 10 |
0 |
Data from Camera |
| 11 |
1 |
Data from Camera |
| 12 |
2 |
Data from Camera |
| 13 |
3 |
Data from Camera |
| 14 |
4 |
Data from Camera |
| Metal Shell |
Metal Shell |
Ground |
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