OS-10V 02/04/2001 Rev.2
6
3.3.1 VOLTAGE CHECKING
CQ5010B oscilloscope use 220V
±
10% voltage. Before using, make sure that the
correct voltage is being used. Otherwise, it would cause accident and damage to the
instrument.
3.3.2 BASIC OPERATION
(1)
POSITION FOR CONTROL SWITCHES
CONTROL SWITCHES
POSITION
INTENSITY [3]
Center
FOCUS [4]
Center
POSITION [7] [16]
Center
VOLTS/DIV [15]
0.1V
VAR [8] [17]
Calibration position
AUTO/NORM [11]
Auto
TIME/DIV [6]
0.5mS
SLOPE +/- [10]
+
INT/EXT/LINE [12]
Int
AC
⊥
DC [18]
DC
(2)
OPERATION
a.
Power on [1],
b.
Power lights at [2],
c.
Allow for warm-up of about 5 minutes, then adjust the intensity[3],
d.
Adjust focus [4] for clearest line. If unstable, adjust level [9] .
(3)
Horizontal Level Adjustment :
a.
Slightly turn [20]
､
[22] counter clockwise, but not to unscrew;
b.
Insert a straight end screw driver to [21], and observe the wave, move screw
driver in order to let the waveform parallel with the horizontal line ;
c.
Screw the [20]
､
[22].
(4)
Connects the calibration signal [5] to Y input terminal[19] with 1:1 probe
(5)
Adjust positions [7]
､
[16] to obtain waveform like Fig 3-3.
Fig 3-3
3.3.3 VERTICAL SYSTEM OPERATION
(1)
VOLTS/DIV switch should turn to correct position following the input signal range.
Adjust position [14] to show the whole waveform within available area. Adjust with
VAR [16] if necessarily, trimming ratio is
≧
2.5:1.
(2)
Input coupling options:
“
DC
＂
is used for observing object with direct current signal
such as logical and static signals, “DC” must be used with low frequency.
“
AC
＂
is
used for observing the AC component of signals.
“
⊥
＂
is used to establish a trace at
the zero volt reference.
