Glossary - HP 16534A User Reference

Glossary

acquisition Denotes one com-
plete cycle of data gathering. One
complete cycle gathers 32,768 sam-
ples of information and stores them
in acquisition memory.
autoscale algorithm An
algorithm that, based on the ampli-
tude and period of the signals found,
sets the vertical sensitivity in volts
per division, offset, horizontal
sweep speed in seconds per divi-
sion, trigger level, and trigger slope
for the trigger source input. Its pur-
pose is to provide two to five cycles
of a waveform that is displayed on
the screen. The waveform is from
the lowest numbered and lettered
channel with a signal.
cancel autoscale The field that al-
lows you to cancel doing an
automatic scaling of the input
signals. This is particularly impor-
tant if you inadvertently touch the
Autoscale field when you have your
measurement configuration set.
Automatically scaling your signals at
this point could change your present
configuration.
cancel run The field that
allows you to cancel making an
oscilloscope run for any reason once
you have touched the Run field.
card A single HP 16533A or
HP 16534A unit.
coupling field The field that sets
the input impedance for the signal
applied to channel 1 or channel 2 of
the oscilloscope. Selectable values
for each channel are 1MΩ / DC, 1MΩ
/ AC, and 50Ω / DC.
delay field The field that sets the
horizontal position of the waveform
on the screen. Delay time is meas-
ured from the trigger point. It is
measured in seconds and is viewed
in the Delay field. It can be set by us-
ing the knob or the keypad.
don't care Signifies that the state
of the signal (high or low) is not per-
tinent to the measurement being
performed.
edge mode The trigger mode that
causes a trigger based on a single
channel edge (either rising or fall-
ing).
high The positive-going portion of
a logic signal. Used in pattern trig-
ger measurements, it is represented
by an H in the pattern selector.
horizontal sweep speed The
time value that determines the hori-
zontal scaling of the waveform to be
displayed on the screen. It is meas-
ured in seconds per division and and
is viewed in the s/Div field. It is set
by using the knob or the keypad.
Glossary-1