Keysight Technologies 34410A - Using Statistics

34410A/11A/L4411A User’s Guide 65
Features and Functions 2
dBm = 10 x log
10
(reading
2
/ reference resistance / 1 m W )
• You can choose from several reference resistance values: 50, 75, 93, 110, 124, 125,
135, 150, 250, 300, 500, 600, 800, 900, 1000, 1200, or 8000 (ohms). The default
setting is 600 ohms.
• Front Panel Operation: Press
MATH > dBM > dBm REF R
Select the desired reference resistance. The Math annunciator turns on and the
reading is now displayed in dBm.
• Remote Interface Operation: The following command sequence selects the dBm
function, turns the function on, and sets the reference resistance.
CALCulate:FUNCtion DBM
CALCulate:STATe ON
CALCulate:DBM:REFerence <value>
Refer to the Keysight 34410A/11A/L4411A Programmer’s Reference Help for
a complete description and syntax for these commands.
Using Statistics
Applies to all measurement functions except continuity and diode test.
From the front panel, you can view the following statistical data for any set of readings:
average or mean (AVG), maximum (MAX), minimum (MIN), standard deviation
(SDEV), and number of samples taken (COUNT). From the remote interface you can
read all of these, plus the peak–to–peak (MAX – MIN) value.
• Front Panel Operation: Press
MATH > STATS
Scroll the second display with the and keys to view the statistical data AVG,
MAX, MIN, SDEV and COUNT.
NOTE
The stored statistical data are cleared when statistics are enabled, when the
CALCulate:FUNCtion command is sent while CALCulate:STATe is ON, when the
power has been off, when the CALCulate:AVERage:CLEar command is executed, after
a Factory Reset (*RST command), after an Instrument Preset (SYSTem:PRESet
command), or after a function change.