GW Instek GOS-6000 Series - Manual (Page 11)

GOS-6051/6050/6031/6030 OSCILLOSCOPE
USER MANUAL
⎯ 16 ⎯
(15) ALT/CHOP
The pushbutton has two functions, which are required and available only
when both channels are active.
ALT—Displays in the readout, indicates alternate channel switching. After
each time base sweeps the instrument internally, switches over from
channel 1 and channel 2 and vice versa.
CHOP—Indicates chopper
The channel switching occurs constantly between channel 1 and channel 2
during each sweep.
(16) ADD-INV—Pushbutton with double functions.
ADD– Displays the “+” symbol in the readout, indicates additional mode.
Whether the algebraic sum (addition) or the difference (subtraction) of both
input signals is displayed, depends on the phase relationship and the INV
setting. As a result, both signals are displayed as one signal. For correct
measurements, the deflection coefficients for both channels must be equal.
INV—Pressing and holding the pushbutton to set the channel 2 invert
function on or off. The invert on condition is indicated by the “ ” symbol
in the readout. The invert function causes the signal display of channel 2 to
be inverted by 180
o .
(17)CH1 VOLTS/DIV
(18)CH2 VOLTS/DIV– Control knob for channel 1/channel 2 has double
functions.
Turning the knob clockwise to increase the sensitivity in 1-2-5 sequence and
turning it in the opposite direction (CCW) to decrease. The available range is
from 1mV/div up to 20V/div. The knob is automatically switched inactive if
the related channel is switched off.
GOS-6051/6050/6031/6030 OSCILLOSCOPE
USER MANUAL
⎯ 17 ⎯
The deflection coefficients and additional information regarding the active
channels are displayed in the readout.
VAR
Pressing the VOLTS/DIV control knob to select the VOLTS/DIV function
between attenuator and vernier (variable). The current setting is displayed
by the “>” symbol in the readout.
After switching on the VAR, turn the VOLTS/DIV control knob
counterclockwise to reduce the signal height, and the deflection coefficient
becomes uncalibrated.
(19)CH1 AC/DC
(20)CH2 AC/DC
Pressing the pushbutton briefly to switch over from AC (~ symbol) to DC
(= symbol) input coupling. The setting is displayed in the readout with the
deflection coefficient.
(21)CH1 GND– P×10
(22)CH2 GND – P×10 –Pushbutton of two functions.
GND
Each time when the pushbutton is pressed briefly, the input of the vertical
amplifier is grounded. It is displayed in the readout as an earth (ground)
symbol “ ”.
P×10
Pressing and holding the pushbutton to select the indicated deflection
coefficient of the channel displayed in the readout between 1:1 and 10:1.
The probe factor of 10:1 is displayed in the readout with the probe symbol
“P×10” in front of channel indication. When proceed cursor voltage
measurement, the probe factor will be automatically included. The symbol
must not be activated unless a 10:1 attenuator probes are used.