Probe Key - HP 54501A Operation Reference

probe Key

EeL Key
Channel Menu
5-4
Using the probe key enables you to select probe attenuation with a range
of 1000:1 down to 0.9000 : 1. To adjust the attenuation you
or
the knob the entry keypad. When using the knob, and in the coarse
mode, the adjustments will increment or decrement in the familiar 1·2·5
the f me mode the changes will be 0.1.
in
sequence. When
Probe attenuation does not affect sensitivity at the input, only scaling
factors for the display.
Attenuation factors will be saved with the front panel setup.
ECL
key allows you to set the oscilloscope to levels optimized for
The
ECL
circuits. They are:
•
V/Div: 200 mV/div
•
offset: ·13 V
•
coupling: dc
•
Trigger level: ·13 V
•
Trigger slope: no change
To return to the previous settings, press
can
use either
RECALL O.