Dynamic Range (Logging Mode); Frequency Response; Linearity - Keysight N774-C Series User Manual

Dynamic range (logging mode)

Frequency Response

Linearity

Keysight N774-C & 8162-C Series User's Guide
For a fixed power meter range, dynamic range D specifies the difference
between the maximum displayable value P
power meter range and the minimum measurable power P
Conditions: As specified.
Measurement: P is based on the nominal power meter range value.
max
P is 3 dB higher than this value (that is, in the +0 dBm power meter
max
range, P is +3 dBm), except that it equals the value for the highest
max
range. P dBm is calculated as the root-sum-square (RSS) of the
min
specified "Noise 2 sigma (dark)" (see,
"Drift (dark)" (see, Drift (dark)
(Watts).
Specifies the frequency f
function is above a defined cutoff level.
The transfer function is the measured optical amplitude on a modulated
sinusoidal optical input divided by the actual amplitude over modulation
frequency, expressed in dB.
Conditions: Cutoff level as specified. Other conditions as specified.
Specifies the relative difference between the measured (displayed) power
ratio D /D and the actual (true) power ratio P
x 0
the power level from the reference level P
Powers expressed in Watts.
Excluding "Noise pp (dark)" (see,
(dark)" (see, Drift (dark)
Conditions: Reference power level P
conditions as specified.
in dBm in the corresponding
max
Noise 2 sigma (dark)
on page 62). RSS is calculated in linear units
up to which the power meter's transfer
resp
x
to an arbitrary level P
0
Noise pp (dark)
on page 62).
= 0.01 mW (-20 dBm). Other
0
Definition of Terms
in dBm.
min
on page 64 and
/P , caused by changing
0
.
x
on page 64 and "Drift
3
63