Omega HOS-MS420, Руководство пользователя, Страница: 21 / 110

20
V5.1 ‐ March 2010
M
EASURE
U
NKNOWN
S
IGNALS USING THE
A
UTO
‐S
ET
F
EATURE
The Auto-Set feature allows the Oscilloscope to measure and display unknown
signals automatically. This function optimizes position, range, time-base, and
triggering. It also assures a stable display of virtually any waveform. Auto Range is
especially useful for quickly checking several signals.
To enable the Auto-Set feature, perform the following steps:
1.
Connect the test probe to the circuit or device under test.
2. Press the AUTO SET key; the test signals will appear on the screen.
A
UTO
Z
ERO THE
H
ORIZONTAL
T
RIGGER AND
T
RIGGER
L
EVEL
P
OSITION
To configure the instrument so that the horizontal trigger and the trigger level position
automatically return to zero.
1. Press
the V key; the horizontal trigger position will automatically return to zero
2. Press the R key; the trigger level position will automatically return to zero
A
UTOMATIC
M
EASUREMENT
R
ANGING
The Oscilloscope offers five (5) ranges that adjust automatically as measurements
are taken. Two numeric readings can be displayed:
MEAS SET1 and MEAS SET2
(selectable independently); the measurements can be performed on the CH1 or CH2
waveform inputs.
To choose a frequency for CH1, perform the following procedure:
1. Press
the MENU key; the function menu will appear on the right side of the
screen.
2. Press MENU ▲ or MENU ▼ to select MEAS SET 1 . Five selectable options
will then be visible at the bottom of the screen.
3. Press the F1 key and select Freq CH1 from the root mean square (RMS)
option. The MEAS SET 1 window color will change to red and display CH1
frequency.
To choose Peak-Peak measurements for the CH2 input, refer to the following:
1. Press
the MENU key; the function menu will appear at the right side of the
screen.
2. Press MENU ▲ or MENU ▼ key to select MEAS SET 2 . Five (5) selectable
options will appear at the bottom of the screen.
3. Press the F4 key to select PK-PK CH2 from the Peak-Peak option. The MEAS
SET2 window color turns to blue and displays the peak-peak value for the CH2
input.