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3 Performing measurements
3.3.5
Menu description “Range”
Allows the selection of the measurement range. Fixed range adjustment
(Range 0
-
7) or Auto (for automatically range switching depending on the in-
put signal) can be selected.
If the input signal alters rapidly it could be difficult for the autorange function to
adjust the correct range (P
-
9710 will frequent display "OVL" or "UDL"). In this
case it might be better to set an adequate range manually!
3.3.6
Menu description “Detector”
Allows the selection of the calibration data used to calculate the measurement
result.
"Ampere“
displays the measurement result as current (Ampere units). Using
the menu item "Manual“ a calibration factor and calibration unit can be adjust-
ed manually by key entry. Other adjustments include selection of table entries
from the calibration data table of the connected detector. A certain table entry
can be selected using the <▲> and key <▼> arrow keys. Using the <►> and
<◄> arrow keys interpolation between the calibration table entries can be
made (1nm step).
3.3.7
Menu description “Offset”
"0“
sets the offset to zero.
"CW“
selects the actual measurement value as the new offset value. The off-
set value will be subtracted from the following measurement results. Offset is
useful to compensate ambient light or dark currents of detectors.
3.3.8
Menu description “Reference”
Selects the reference value used to calculate the measurement results in
mode "Relative %“, "Relative (Log) “ and "Relative (Fact)“.
With
"One Unit“
the reference value is set to 1 (1A, 1W, 1cd, ... ).
"CW“
se-
lects the actual measurement value as the new reference value. With
"Manual“
a certain reference value can be set manually with the keys.
"1.000mX"
sets the reference value to 1/1000 of the selected unit (could be
used to display the result in dBmW).
