Table 5-2. 9 way female 'D' connector
| pin | function |
|---|
| 1 | +12V supply output. |
| 2 | -12V supply output. |
| 3 | +5V supply output. |
| 4 | supply 0V |
| 5 | Doppler shift signal input |
| 6 | signal ground. |
| 7 | Reserved. Do not connect. |
| 8 | Reserved. Do not connect. |
| 9 | Laser enable output. laser on = 0V; laser off = 5V. |