Agilent Technologies 8757D Bedienungsanleitung PDF herunterladen (Seite 2)

The Agilent 8757D has four independent display

channels that process the signals from the Agilent

85037 series precision detectors, 85025 and 85026

detectors, and the 85027 series directional bridges

for logarithmic display, in single channel or ratio

mode. Three (optionally four) detector inputs are

provided.

Display

Horizontal resolution

The number of points (horizontal resolution)

that can be selected depends on the number of

traces displayed.

Network analyzer Traces Selectable number of points

8757D 1 101, 201, 401, 801, 1601

2 101, 201, 401, 801

3, 4 101, 201, 401

Display modes

All analyzer display channels can display any one

of the detector inputs or any ratio combination

of detector inputs.

Log magnitude

dBm: single channel power measurement

dB: relative power measurement (ratio or relative

to trace memory)

SWR

Relative measurements (normalized or ratio

measurements) can be displayed in SWR.

Channels 1 and 2 only: 401 points or fewer

AUX voltage

The rear panel BNC input ADC IN can be meas-

ured and displayed in volts (–10 to +10 volts).

Typical maximum error is 60 mV.

Color settings

Up to 8 operator-selectable colors are available

for LCD attributes, such as the grid, measurement

traces, and labels.

Sweep time

The minimum sweep time depends on the number

of traces displayed and the number of points

selected.

Minimum sweep time (ms)

Number (log magnitude format)

of points 1 trace 2 traces 3 traces 4 traces

101 40 50 60 70

201 50 75 90 100

401 100 100 150 200

801 200 250 NA NA

1601 400 NA NA NA

Averaging

2, 4, 8, 16, 32, 64, 128, or 256 successive traces can

be averaged.

Smoothing

Provides a linear moving average of adjacent data

points. The smoothing aperture defines the trace

width (number of data points) to be averaged, and

ranges from 0.1% to 20% of the trace width.

Normalization

Traces are stored and normalized with the highest

resolution, independent of display scale/division or

offset. With adaptive normalization on the Agilent

8757D, calibration data is interpolated when the

frequency span is decreased.

Limit lines

Limit lines facilitate quick pass/fail decisions.

Limits can be any combination of flat or sloped

lines or single points up to 12 segments. They

are only available for channels 1 and 2, for traces

with 401 points or fewer, and can be stored in

save/recall registers 1 through 4.

Agilent 8757D scalar network analyzer

1 2 3 4 5 6 7 ... 13 14

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