Hi, I am simulating a clock tree (in HSpice 2007 version) without any clock gating and trying to capture its average power consumption. The clock's time period is 1 ns (thus its a 1 GHz clock). If I measure the power in HSpice as ..measure tran avgpower1 AVG power from=10ns to=20ns I get a result of 53.3 kW (yes, kilowatts). However, if I use the command ..measure tran avgpower2 AVG I(VVDD) from=10ns to=20ns I get the value as 7.44uW And on using ..measure tran avgpower3 INTEGRAL I(VVDD) from=10ns to=20ns I again get power (=integral/10ns) as 7.44uW VVDD is the voltage source which connects GND and VDD through a 1V supply. Why am I getting so different/weird result with the first command? On a side issue, I checked that the variable "power" (for the first command) is not defined anywhere in my netlist, so does HSpice understand it as a keyword? Thanks a lot in advance, Ashu
