The 853A is a digital display for use with the HP 8557A, 8558B and 8559A spectrum analyzer plug-ins.
Signals are displayed on either of two independently stored digital traces.
Display processing capabilities include maximum hold, digital averaging, and trace normalization for extended measurement
A built-in microprocessor manages the display operation and provides access(via the front panel)
to built-in routines for display calibration.
Traces: dual trace, digitally stored display with resolution of 481 horizontal by 801 vertical points per trace.
Signal Processing: maximum hold, digital averaging, and trace normalization.
Internal service routines: front-panel buttons access test routines for maintenance of digital hardware.