GxT Ferret 91 2-Channel Labscope - Manual (Page 4)

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ON/OFF To maximize battery life, the Ferret 91 includes an auto shut off feature. If
no buttons are pushed for approximately five minutes (20 minutes at a
setting of 60 sec/division), the Ferret 91 will turn off the LCD display and all
associated circuitry. To return to live operation, push any button.
SELECT Press the SELECT button to access the main menu, and to begin the
selection process for setup and measurement.
UP/DOWN Allows the user to scroll to a desired setup or measurement by moving the
highlighted line up or down in the on-screen menu.
CH1 Changes the voltage range of Channel 1. Pressing both the upper and
lower portions of the button simultaneously causes the ground reference
move to the center of the screen. Press both upper and lower portions
again and the ground reference will move to the bottom of the screen.
CH2 Same as CH1
TRIG Changes the voltage level of the trigger. Pressing both the upper and lower
portions of the button simultaneously causes the trigger slope to alternate
between positive and negative slope. The actual position of the trigger
start point is indicated by a “T” on the display.
TIME/DIV Pressing the TIME/DIV button sets the horizontal sweep speed for both
channels.
HELP Once a menu item has been selected, pressing the HELP button causes
information relating to that selected measurement item or menu feature to
be displayed on-screen. There may be multiple pages of information, which
can be scrolled through using the UP or DOWN arrow buttons. To exit the
HELP menu, press the HELP button again.
HOLD Pressing the HOLD button freezes the current on-screen waveform, and
brings up the waveform storage selection menu. The user can then decide
how to store the waveform and related information that is currently being
viewed.
REFERENCE Pressing the REFERENCE button displays a representative waveform for
the menu item currently selected. This waveform is only visible on-screen
while the REFERENCE button is being pressed. When in the Standard
scope mode, pressing the REFERENCE button will cause the current scope
parameters to be displayed.
Please Note: The reference waveforms included in the LabScope are
representative only, and may not exactly match the measurement the
instrument is currently making, or the waveform the labscope is currently
acquiring. Please use caution when comparing the signal actively being
acquired to the reference waveform.
Front Panel Controls