Boonton 4500B Peak Power Meter - Manual (Page 129)

Boonton 4500B RF Peak Power Analyzer
Operation 4-57
Table 4-12. Mark > Extensions > Submenu (continued)
Menu Item Function
(Type) Selections (SCPI cmd)
MARKer:MATH:BOTH See Chapter 5 for argument description.
MARKer:MATH:EACH See Chapter 5 for argument description.
Note The Peak-to-Average Marker Math function allows users without the Statistical option (Option 10) to make
peak-to-average (also called Crest Factor) measurements in the Pulse mode. Note that the measurement is
made between the two time markers This is a very important characteristic because the primary use of this
function is to measure within a GSM pulse burst. Usually, one of three or more bursts in a sequence or
frame is selected by placing the markers just inside the leading and trailing edges. Typically, 5% to 95% of
the burst length is actually measured.
If Chan # > Exten > Peak Hold function is Off, the PkHld reading will slowly decay at a rate related to the
Averaging setting. If Peak Hold is On, the PkHld reading will be held until reset. This is more precise, but
less convenient, since it requires a STOP, CLEAR, RUN sequence at the beginning of each new
measurement.
The Statistical option also provides this capability in its gated mode, along with the distribution functions
and other parameters. It can also measure non-synchronous signals such as CDMA and OFDM.