HP 54520 Series - Page 270

CAL Signals
Specifications and Characteristics
Operating Characteristics
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 mHz 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. The utility
menu allows the user to switch the BNC from probe compensation and
calibration signals to a trigger output pulse. The rising edge, with armplitude
from about —400 mV to 0 V (when terminated into 50 Q), 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.
dc Calibrator Output This output is used for vertical calibration of the
oscilloscope, as described in the Service Guide.
14-21