Startup; Functional Description; Autoset; Vertical Channel - Metrix OX 520B Manual De Funcionamiento

3.

STARTUP

• Put the eight control potentiometers as shown on previous page.
• Push in the POWER key (30): the most recent memorized configuration will be restored.
• Apply a signal to the CH1 (26) or CH2 (23) BNC input plug.
4.

FUNCTIONAL DESCRIPTION

4.1.

AUTOSET

• AUTOSET/ABORT light On: when the User presses on the AUTOSET key (4), the oscilloscope
searches for the vertical sensitivity, the horizontal sweep speed and trigger conditions that will
display the signals present at the CH1 and CH2 inputs.
NOTE: If there is no signal, the oscilloscope will keep the ranges indicated by the manual vertical
sensitivity switches (5) - (11) and the timebase switch (15).
• AUTOSET/ABORT indicator flashes:
AUTOSET are not the same as the ranges indicated by the sensitivity and timebase switches.
The ranges found by AUTOSET can be found by turning switches (5) (11) and (15) in the direction
shown by the corresponding blue arrows closest to the two illuminated coupling or source lights.
The corresponding two lights go OFF when the manual sensitivity or timebase switch changes
to the position found by AUTOSET. The AUTOSET/ABORT light goes OFF when all AUTOSET
positions have been found.
• ABORT: The result of AUTOSET can be canceled by pressing on the AUTOSET/ABORT key
(4) again.
• Other functions modified by the AUTOSET function:
4.2.

Vertical channel

(6) - (10) POSITION
(8) POSITION
(5) - (11) VOLT/DIV
(22) - (28) VAR
(24) - (27) AC DC GND
AC
AC
AC
(23) - (26)
16
AC coupling for active channels, otherwise coupling unchanged
-CH2 never changed
AUTO trigger imposed
x10 invalid
DC source coupling
Vertical framing of traces plus horizontal framing in XY for
POSITION (6)
Horizontal framing of traces
Vertical sensitivity / start the channel:
12 positions (5 mV to 20 V/div.).
CH1 OFF position: channel CH1 is not displayed.
CH2 OFF position: channel CH2 is not displayed.
Continuous adjustment of vertical sensitivity. When the button is
locked at the left stop, the corresponding channel is calibrated.
Decalibration is signaled by the active coupling light flashing.
Intermittent press: Selection of input coupling
Display the AC component (eliminate the DC component).
DC GND
Display the complete signal (0 to 20 MHz).
DC GND
Display the zero volt reference for the channel (without short circuiting
DC GND
the input signal). Enables precise positioning of the trace on the screen
using the POSITION controls (6) and (10).
Continuous press: display the 0 V reference, coupling unchanged.
CH1 CH2 Input signals to be observed on BNC connectors.
the AUTOSET light flashes if the ranges found by
Chapter II
20 MHz oscilloscope