The BSLI10 is a high performance indoor reference source for professional applications. It contains a high stability OCXO that can be operated in internal mode or can be synchronized to an external 10 MHz when an even higher frequency stability is required. The external reference signal is detected automatically. The output of the OCXO is distributed to 8 sinewave outputs. The output amplifiers ensure very high isolation between the outputs, thus the connected load on one port cannot disturb the operation of another load. The BSLI10 contains a front panel with LCD and control keys, and a power supply. It is housed in a 1U 19” rack.