# Technical Support

## Test & Measurement

Find by Product Model Number: Examples: 34401A, E4440A

### Refine the List

remove all refinements

#### 1-12 of 12

Sort:
 How do I convert dBm to dBmV since power meter display unit is in dBm? dBmV = dBm + 47, if the load impedance is 50 Ohm FAQ 2011-09-12 How do I convert a percentage(linear) to a dB(logarithmic) value as most of the accuracy values stated in power meter data sheet are in percentage? 1% is equal to 0.0432dB FAQ 2011-09-12 What is the output update rate of the Recorder Output? Typically it is about 45 ms. FAQ 2011-03-31 If I turn OFF the power meter, then turn in ON will the previous zero/cal information still be good? Some power meters will retain their zero/cal information, some will not…. FAQ 2010-12-20 How can I make an average RF power measurement on a pulsed RF signal with a very long PRI? These types of measurements can be made using long average times…. FAQ 2010-10-07 Why can’t I make a gated measurement for a pulse width wider than 45 ms? The current version of firmware can make gated measurements with a total time of 150 ms. However the gate length can not be greater than 45 ms. FAQ 2010-09-20 When I connect the U2004A USB power meter to my device I get a low level power measurement, even when there is no RF applied … The U2004A power sensor is DC coupled. Any low frequency low level signal on your device may cause a low level signal. FAQ 2010-08-09 When a B-model or H-model of the E-Series Power Sensors (with a 30 dB attenuator attached) is connected to a EPM Series, EPM-P Series or … When a B- or H-model of the E-Series Power Sensors is connected to a EPM, EPM-P or P-Series Power Meter, the power level is 0 dBm because….. FAQ 2010-08-09 Why did U2004A power sensor detecting small signal while the DUT power is turned OFF? i)Use a suitable DC block. This will prevent DC components signal and leakages from going through the DUT. ii)Perform EXTERNAL zeroing after connecting the USB power sensor to the DUT. This will correct errors due to DC component leakage. FAQ 2009-09-01 What are external and internal zeroing for the U200xA/B/H USB Power Sensors? The U200xA/B/H USB Power Sensors have two types of zeroing: Internal Zeroing and External Zeroing…. FAQ 2009-05-20 How do you “zero” the N848xA sensors? The N848xA Power Sensors are zeroed by removing the RF power from the input sensor and pressing the Zero button on the power meter. FAQ 2009-02-04 How do I set the Rise and Fall Times reference level on my N1911A/N1912A P-Series Power Meter? To set the Rise and Fall Times reverence level on your N1911A or N1912A P-Series Power Meter, you need the firmware A.02.01 or above…. FAQ 2008-09-25