HP 54520 Series Service Manual page 25

Hardcopy
Full HP-IB
Programmability
CAL Signals
Product Support
Operating Characteristics
You can transfer the CRT display, including menus and measurement answers, directly to a
wide variety of HP graphics printers and plotters.
The oscilloscope is fully programmable. Instrument settings and operating modes, including
automatic measurements, are remotely programmed over HP-IB (IEEE-488), HP-IB
programming complies with IEEE 488.2-1988 "Standard Codes, Formats, Protocols, and
Common Commands."
Sequential Single-shot Data Acquisition and Transfer Rate Using the front- panel
time base menu or HP-IB command "Raw Data," the oscilloscope can automatically
capture, store, and label a waveform; and rearm the trigger; and then repeat this process
until the oscilloscope's entire 400K word RAM (volatile) is filled. Once the specified
number of waveforms are captured and stored, the oscilloscope can transfer the entire
block of waveforms to the external computer. HP-IB bus users can specify the number of
points to store and the number of waveforms to capture. Repetition rates vary depending
on record length and time base setting (slower sampling rates).
Data Transfer Rate Approximately 120 Kbytes per second.
Probe Compensation, ac Calibrator Output A square wave signal is provided on the
front panel and rear panel for probe compensation and other uses. The default frequency
is approximately 500 Hz, but it is adjustable from approximately 250 mEz to about 32 kHz.
During instrument self-calibration, this output is used to provide other calibration signals,
as described in the Service Guide.
The rear panel BNC connector is also used for trigger output. From the utility menu you can
switch the BNC from probe compensation and calibration signals to a trigger output pulse.
The rising edge, with amplitude from about -400 mV to 0 V (when terminated into 50 ), is
synchronous with system trigger. The falling edge of this pulse is approximately at the start of
the acquisition. The rising edge should be used as the edge synchronous with trigger.
de Calibrator Output This output is used for vertical calibration of the oscilloscope, as
described in the Service Guide.
Built in Self-Test and Calibration Routines Internal self-test capabilities provide a
90% confidence the oscilloscope is operating properly. External test procedures in the
Service Guide provide a 100% confidence. Self-calibration routines, also selected through
the front-panel "utility" menu, ensure that the instrument is operating with its greatest
accuracy and require no external test equipment.
Low Cost of Ownership The oscilloscope includes a standard three year, return to HP
warranty.
To minimize the repair and calibration times, the oscilloscope was designed with only one
main assembly adjustment per channel. In addition, Hewlett-Packard's board exchange
program assures economical and timely repair of units, reducing the cost of ownership.
Reliability Estimated mean time between failures (MTBF) for this oscilloscope is 30,000
hours. MTBF is computed using an instrument usage of 2,000 hours per year.
Solutions Hewlett-Packard's System Engineering Organization can help you configure
an HP-IB system and provide software support for your application, developing solutions
to meet your measurement needs. Contact your HP Sales Office for more information.
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