I want to operate the gating mechanism of a single-photon counting module using a 81150A pulse generator. The gate is on when its voltage is high (5V) and off when it's low (0V). So far, simple enough. The problem, however, is that when the voltage is low, the photon counter requires that the pulse generator be able to sink 100mA of current. Therefore my question is how much current can the 81150A sink? Does the answer depend on any parameter I can set in the pulse generator?