HP 5335A - Page 26

Operation and Programming
3-69. Math Group
3-70. The functions within the MATH GROUP allow the user to perform a number of
mathematical operations on the measurement before it is displayed. The OFFSET, NORMLZ, and
SCALE keys allow for the addition, division, and multiplication, respectively, of the measure¬
ment by user specified" constants. Modification of the display by the Math operations is
represented by the following relationship:
Display =
Measurement + OFFSET
NORMLZ
•X SCALE
3-71. Notice that the OFFSET operation is performed before normalization and scaling. Any
single or combination of these operations can be selected. This provides the user with extensive
control over the resultant display. It can be used, for example, to subtract systematic errors or
display the percentage difference. Additionally, the overall math operation can be disabled and
then re-established without having to re-enter constants.
3-72. ENTERING CONSTANTS. The values for the three user specified constants are entered
from the keyboard. Entry begins by pressing any one of three blue keys, OFFSET, NORMLZ, or
SCALE. That indicator key's light will start to flash, indicating that an entry is expected. During
the number entry mode, the FUNCTION keys respond to the functions labled in blue (see
Table 3-1). Any entry is completed by pressing the ENTER key, at which time the blue key's light
will turn on (steadily), indicating that a constant for that operation is stored and in effect. After
pressing ENTER, the instrument will immediately begin making measurements, performing the
math operation and displaying the result.
NOTE
Numbers greater than 9 X 109 and lessthanl X10- 9 i n magnitude
can not be stored.
3-10
Mode! 5335A