Agilent Technologies PSA Series Manual page 76

Making Measurements
Tuned RF Level Measurement
Table 3-2 PSA Settings
Parameter
Notes on the PSA Settings
Accuracy
Default is
measurement is 0.027 dB for the SNR is >30 dB, or 0.1 dB, when the SNR is <30
dB.
When the setting is
regardless of the SNR value.
Range 3 Switch Delay (Early instruments only)
Applies only to instruments with Option Driver part number E444060253 and
firmware release less than A.11.00. Press
the option driver part number.
When range 3 is used, several internal PSA settings are changed including
enabling the optional preamp and decreasing input attenuation. For optimum
accuracy, a delay of several minutes is initiated when this function is
delay allows the PSA circuitry to stabilize. Assure the
for both the Ranging Calibration and the TRFL measurement process since you
may perform the Ranging Calibration as a separate routine. However, many users
will take advantage of the fact the Ranging Calibration will be triggered
automatically (if the Range Switching is set to AUTO) as part of the TRFL
measurement routine. See
IF BW
Default is 10 Hz. Setting
levels but it cannot tolerate poor FM from the source. Setting the
offers better tolerance to residual FM, but the measurement range is reduced by
8.75 dB. The 30 kHz and 200 kHz settings can be used for analog sources.
Range Switching
Default is auto mode. In
to perform a range calibration. In
and the N5531S performs the Range Calibration automatically depending on the
SNR.
76
10 MHz Out
(Under System, Reference)
Freq Ref
(Under System, Reference)
. When Accuracy is set to
Normal
, the standard deviation for the measurement is 0.027 dB
High
"PSA Range Calibration" on page
to 10 Hz allows you to measure lower signal
IF BW
mode, you have to press the
Manual
Auto
Setting
ON
Int
, the standard deviation for the
Normal
, ,
System More Show Hardware
Range 3 Switch Delay
56.
TRFL Calibrate
mode, the
TRFL Calibrate
to view
. The
ON
is On
to 75 Hz
IF BW
key
key is grayed out
Chapter 3