Agilent Technologies 8753ES manual Agilent 8753ET/ES Supplemental Characteristics, Measurement

Agilent 8753ET/ES Supplemental Characteristics

Measurement

Number of display channels

Four display channels available.

Number of measurement channels

Two primary and two auxiliary measurement channels available.

Measurement parameters

8753ET: Reflection, transmission, A, B, R, A/R, B/R, A/B. Conversion to impedance or admittance. 8753ES: S11, S21, S12, S22, A, B, R, A/R, B/R, A/B. Conversion to impedance or admittance.

Formats

Cartesian: log/linear magnitude, phase, group delay, SWR, real and imaginary.

Smith chart: with log/linear amplitude and phase, R + jX, G + jB, or real/imaginary markers.

Polar: with linear/log amplitude, phase, or real and imaginary markers.

Data markers

Each display channel has five independent markers that can be displayed simultaneously. Twenty inde- pendent markers can be displayed in 4-channel display mode when markers are uncoupled.

Marker functions

Markers can be used in various functions: Marker search (Mkr to max, Mkr to min, Mkr to target), Mkr bandwidth with user-defined target values, Mkr to start, Mkr to stop, Mkr to center, Mkr to span, Mkr to reference, Mkr to delay, and trace sta- tistics (average value, standard deviation, and peak- to-peak deviation of the data trace between two markers). The tracking function enables continuous update of marker search values on each sweep.

Group Delay Characteristics

Aperture: selectable

Maximum aperture: 20% of frequency span

Minimum aperture: (freq. span) / (number of points +1)

Range

The maximum delay is limited to measuring no more than 180° of phase change within the mini- mum aperture. Range = 1/(2 x minimum aperture)

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Accuracy

The following graph shows group-delay accuracy at 1.3 GHz with type-N full two-port calibration and 10-Hz IF bandwidth. Insertion loss is assumed to be <2 dB and electrical length to be ten meters.

Source Control

Sweep limits

Set start/stop or center/span of the stimulus parameter (frequency, power, time) directly through the source control keys and the control knob, the step keys or the data entry keyboard.

Sweep type

Set a linear or logarithmic sweep, an arbitrarily defined frequency list, a power sweep or a CW (single frequency) type of sweep.

Measured number of points per sweep

Linear frequency: choose 3, 11, 26, 51, 101, 201, 401, 801, or 1601 points.

Fast swept list

Define up to 30 different sub-sweep frequency ranges in any combination of CW, center/span, or start-stop sweep modes. Set test-port power levels and IF bandwidth independently for each segment.

Sweep modes

Set a coupled channel sweep (same stimulus conditions on both channels) or an uncoupled channel sweep.

Chop/alternate

Select whether to alternately or simultaneously (chop) measure channels when in dual-channel mode. Chop mode is faster, while alternate mode optimizes dynamic range.

Sweep time

Set sweep time in seconds, minutes, or hours.

Automatic sweep time

Select auto sweep time by entering zero seconds sweep time. The analyzer will sweep at the minimum sweep time for any subsequently selected stimulus conditions. Auto sweep time is the default condition.