[Top][All Lists]
 It is worth noting that your calculation of power is missing a divide by 2, since you specify a peak-to-peak voltage, and not a peak voltage.  The equation for peak-to-peak voltage to power (given a 50 ohm impedance) is P (watts) = (.707*V/2)^2/50, which when I calculated yields something like .61 mw, so this is correct. Also, as far as I am aware, the BasicTX board directly accessing the TX output of the AD9862 chip, so perhaps your best bet is to check the datasheet for this IC.  This should yield a power output versus frequency.  The alternative is to measure yourself, as you have done.  Remember, the datasheet is only a reference.  Actuall power levels can vary within a tolerance (which the datasheet should also provide) due to variations in gain and/or biasing, connector loss, transmission line loss, impedance mismatch, and so on. ~Jeff On 6/25/2010 12:44 PM, William Cox wrote: Sorry for the bump, but I'm confused about the output power of the BasicTX, especially in regards to 1 channel or both. Any thoughts? William On Mon, Jun 21, 2010 at 10:46 AM, William Cox wrote: I'm getting conflicting info on how much power the BasicTX can transmit. Ettus FAQ says, "Yes, the BasicTX will put out about 1mW up to about 50 MHz." This post says it's, "0.5mW": http://old.nabble.com/question-about-BasicTX-td28010044.html When I use "usrp_siggen.py" with full amplitude, my sineway has a peak-to-peak voltage of nearly 500mV -> (0.707*0.5V)^2/50ohm = 2.5mW So, which should I go by? I'm trying to find an amplifier that will take my signal up to 200mW to go into a laser bias-T. Thanks. -William ```-- ~Jeffrey Lambert, K1VZX```