2.4 Trigger
The 9400A’s digitally-controlled trigger system offers facilities such
as pre-trigger recording, bi-slope and window triggering, sequence and
roll modes in addition to the standard operating modes of Auto, Normal
and Single (Hold). The trigger source can be external or can be either
of the two inputs, and the coupling is selected from AC, LF REJect,
HF REJect and DC.
2.5 Automatic Calibration
The 9400A has an automatic calibration facility that ensures overall
vertical accuracies of ± 2% (optionally ± 1%) and ± 20 psec RMS for the
unit’s crystal-controlled time base.
The time base is calibrated each time the 9400A’s time base control is
adjusted to a new TIME/DIV setting; vertical gain and offset
calibration take place each time the front panel fixed gain control for
either CHAN i or CHAN 2 is adjusted to a new VOLTS/DIV setting.
Calibration of both channels also takes place each time the BANDWIDTH
LIMIT push button is pressed.
Further information on automatic
Section 9.4, "Auto-calibration".
calibration may be found in
2.6 Display
The 9400A’s large 12.5 cm x 17.5 cm (5 x 7 inches) screen displays
analog waveforms with high precision and serves as an interactive,
user-friendly interface via a set of screen-oriented push buttons
located immediately to the left and right of the CRT.
The oscilloscope displays up to four waveforms, while simultaneously
reporting the parameters controlling signal acquisition. In addition,
the screen presents internal status and measurement results, as well as
operational, measurement, and waveform analysis menus.
A hard copy of the 9400A’s screen is available via the unit’s dedicated
plotter port.
2.7 Manual and Programmed Control
The 9400A’s front panel layout and operation will be very familiar to
users of analog oscilloscopes. The interactive software menus assist in
quickly utilizing the recording and processing capability of the 9400A
to its full potential.
2-3
Product Description
To Next Page
Loading...
