HP-Agilent/Keysight

The HP 8757D LCD COLOR DISPLAY scalar network analyzer allows you to measure insertion loss, gain, return loss, SWR, and power quickly and accurately . With high-performance detectors and directional bridges, and a companion Keysight source and printer, this analyzer becomes the basis of a complete measurement system with superb performance.

Setup time is reduced by external disk save/recall, and measurement data can be sent directly to a printer while you proceed to the next measurement.

You can configure your system using a Keysight PSG signal generator with ramp sweep capability. The dynamic range can be extended from 75 dB to 83 dB using the PSG's high power option.

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.

The number of points (horizontal resolution) that can be selected depends on the number of traces displayed.

A display is considered faulty if:
• A complete row or column of “stuck” or “dark” pixels.
• More than six “stuck on” pixels (but not more than three green) or more than 0.002% of the total pixels are within the LCD specifications.
• More than twelve “dark” pixels (but no more than seven of the same color) or more than 0.004% of the total pixels are within the LCD specifications.
• Two or more consecutive “stuck on” pixels or three or more consecutive “dark” pixel (but no more than one set of two consecutive dark pixels) “Stuck on” of “dark” pixels less than 6.5 mm apart (excluding consecutive pixels.

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 measured and displayed in volts (–10 to +10 volts). Typical maximum error is 60 mV.

Up to 8 operator-selectable colors are available for LCD attributes, such as the grid, measurement traces, and labels.

The minimum sweep time depends on the number of traces displayed and the number of points selected.

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.
Key Features & Specifications

Up to 83 dB dynamic range
Buffered plotter/printer output
Built-in limit testing for quick pass/fail decisions
External disc and internal register save/recall of test setups
Color display
Optional internal power meter calibrator and precision detectors provide near power meter accuracy
DISLPAY CRT
Four display channels
Three detector inputs
+16 to –60 dBm dynamic range
AC/DC detection modes
101 to 1601 measurement points/trace
Compatible with the Agilent 85025 and 85026 series detectors and the Agilent 85027 series directional bridges
Limit line testing (channels 1 and 2)
Adaptive normalization
Cursor search functions (max, min, n dB, BW)