Ozone Interface Board OIF has 4 dedicated channels (ozone sensor current and temperature, battery voltage, and ozone pump current), and an additional voltage measurement channel for other purposes.
The terminals on OIF are marked with a sticker attached on the card.
| Number | Connection | Cable code |
|---|---|---|
| 1 | Radiosonde interface | CBL210224 |
| 2 | Add-on sensor IN for optional XDATA sensors | - |
| 3 | Pump motor | CBL210282 |
| 4 | Ozone pump motor battery | CBL210225 |
| 5 | Heating battery | CBL210295 |
| 6 | Extra terminal | - |
| 7 | SPC sensor W = white cable B = blue cable | - |