Technical data

32 34405A User’s and Service Guide
2 Features and Functions
The decision to update a new reading value in the primary display is
based upon the box- car moving statistics of the present reading and the
three previous readings as described below:
Max (Reading
N
Reading
N-1
Reading
N-2
Reading
N-3
)
Min (Reading
N
Reading
N-1
Reading
N-2
Reading
N-3
)
Math Annunciators
The math Hold, Limit, Null and MnMx annunciators are located above the
primary display and the dB/dBm annunciator is located right of the
primary display (see “The Display at a Glance” on page 16). The Math
Value Annunciators are located under the secondary display and assist in
viewing and editing math values in the secondary display.
NOTE
• Minimum delta value to trigger an update on held value : 0.1% of full scale
• Minimum level to enable update on held value : 5% of full scale
Table 1 Math Value Annunciators
Math Operation When Viewing/Editing Editable Math Annunciator
Null Offset 9 Ref Value
dBm R
REF
9 Ref R Value
dB dB Ref 9 Ref Value
MnMx Maximum Max
Minimum Min
Average Avg
Reading Count N
Limit HI Limit 9 Hi Limit
LO Limit 9 Lo Limit