The level control range for any active channel is – 124 dBm to 0 dBm, within the limitations of the total power specification. The VSG produces a minimum power level of – 124 dBm per channel, where each signal is considered to be a channel (for example, signal 1, signal 2, and noise). The maximum power specification is 0 dBm for a single CW signal, – 8 dBm for a single modulated signal, and – 8 dBm total for multi‑channel operation. Note that noise channel power is included when considering the total power.