Linear Power Mode Display - ILX Lightwave FPM-8200 User Manual

2
C H A P T E R

Linear Power Mode Display

Depending on the input power level, the FPM-8200 in linear mode displays power
in units nW, µW, or mW. Within these ranges, the decimal point is moved as
appropriate for the value:
Power (watts)
Units
Decimal places
Example
To keep the display from rapidly changing when measuring at one of these
boundaries, the display in linear mode includes 1% hysteresis. To illustrate, here
is an example of changing from 99 nW to 100 nW (1% = 1 nW):
Increasing
98.999
99.000
99.001
99.002
.
.
99.998
99.999
100.00
100.01
100.02
12
 FPM-8200
FR O N T PA N E L O P E R A T I O N
The FPM-8200 Front Panel
−9
<100 x 10 100 x 10
to
<1 x 10
nW nW
3 2
85.436 nW 327.24 nW
Decreasing
100.01
100.00
99.99
99.98
99.97
.
.
99.01
99.00
98.999
98.998
−9 −6
1 x 10 100 x 10
to to
−6 −6
<100 x 10 <1 x 10
μW μW
3 2
38.361 μW 542.76 μW
−6 −3
1 x 10 100 x 10
to to
−3 −3
<100 x 10 <1W
mW mW
3 2
38.974 mW 756.58 mW
−3
1W
mW
1
1062.3 mW