Keysight N7744A, User Manual

Page: 66 / 105

Linearity
Specifies the relative difference between the measured (displayed)
power ratio D
x
/D
0
and the actual (true) power ratio P
x
/P
0
, caused by
changing the power level from the reference level P
0
to an arbitrary level
P
x
.
Powers expressed in Watts.
Excluding “Noise pp (dark)” (see, “Noise pp (dark)” on page 65 and
“Drift (dark)” (see, “Drift (dark)” on page 63 ).
Conditions: Reference power level P
0
= 0.01 mW (-20 dBm). Other
conditions as specified.
Maximum safe (input) power
The maximum input power that can be applied to any port of the power
meter or attenuator without permanent change to its characteristics.
Attention: Applying more than the specified power might damage the
power meter or attenuator!
N O T E
For input powers > 20 dBm, clean connectors in good condition are vital to avoid
thermally induced fiber damage.
Minimum averaging time
The minimum selectable averaging time.
Noise pp (dark)
Specifies the peak-to-peak (pp) change of displayed power over time
with zero input power (dark), excluding "Drift (dark)" (see, “Drift
(dark)” on page 63 ) for the N7744A and the N7745A only. Powers
expressed in Watts.
Conditions:
All ports dark. Averaging time as specified. Other
conditions as specified.
Specifications and Regulations Compliance
4
Keysight N774x Series 65