These db25 connectors were originally wired for use with a 232SDA12 12-bit analog-to-digital converter available from B&B Electronics. More recently, I have used self-contained 12-bit U12 data loggers from Onset Computer Corporation. Consequently, more recent instruments may lack the jumpers shown between two pins and from the output common pin. To use the U12 loggers, you will need to make appropriate connections to a hooded db25-female connector with Onset's CABLE-2.5-STEREO voltage input cables, as shown.
| Connections for two-channel sun photometers and water vapor instruments | |
| Connections for UV-A radiometer/sun photometer | |
| Connections for Onset's CABLE-2.5-STEREO voltage input cable (from Onset's Web site). The red wire is not needed, but you should not replace the stereo plug with a mono plug. |
|