Lemo 1B is a medium-size push-pull connector (13mm OD) with 2-32 pins, the most common Lemo size in broadcast cameras, medical instruments, and test equipment.
| Pin | Name | Function | Type |
|---|---|---|---|
| 1 | Contact 1 | Signal or power | I/O |
| 2 | Contact 2 | Signal | I/O |
| 3 | Contact 3 | Signal | I/O |
| 4 | GND | Ground | GND |