User manual

10
BEDIENELEMENTE7.
1 KHz
CAL
2Vp-p
POWER
33
INTEN FOCUS
CH1 OUTPUT
Z.AXIS INPUT
CAT 30Vpk MAX
20mV/DIV INTO 50Ω
AC
POWER MAX 35WATES. 40VA
115
230
ENSURE THE POWER IS REMOVED FROM
THE INSTRUMENT BEFORE REPLACING THE PUSE
TRACE
ROTATION
HORIZONTAL
MODE
LEVEL
TRIG. ALT
AUTO
NORM
TV-V
TV-H
TIME/DIV
POSITION
POSITION
VOLTS/DIV
SWP. VAR.
x10 MAG
CAL
MODE
CH2 Y
SLOPE
VOLTS/DIV
POSITION
VAR
PULLx5MAG
DC
BAL
DC
BAL
S
mS
mS
x 10
UNCAL
VERTICAL
TRIG IN
1MΩ//25pF
CAT
MAX
300Vpk
SOURCE
CH1
CH2
LINE
EXT
CH1
CH2
CH2 INV
DUAL
ADD
AC
CND
DC
AC
AI T
CHOP
CND
DC
!
!
CH1 X
CAT
300Vpk MAX
!
!
!
!
CAT
300Vpk MAX
VAR
PULL x5MAG
1MΩ//25pF
1MΩ//25pF
I
O
+
+
-
-
X-Y
CAL
mV
V
55
5
50
20
10
2
1
1
2
CAL
mV
V
55
5
50
20
10
2
1
1
2
1
1
1
10
1
10
2
2
2
22
20
20
5
5
5
5
5
50
50
32 31 30 29 28 2527 24 2326
14
3534
383736
1715121110987654321 13 18 1916 2220 21
~
43
X-Y Operation
Set the TIME/DIV switch to X-Y position to operate the instrument as an X-Y oscilloscope. Each input is
applied to the instrument as follows
X-axis signal (horizontal axis signal ) : CH1 INPUT.
Y-axis signal (vertical axis signal) : CH2 INPUT.
When high frequency signals are displayed in X-Y operation, pay attention to the frequency
bandwidth and phase difference between X and Y-axis.
The X-Y operation permits the oscilloscope to perform many state-of-the-art measurements which
the conventional sweep operation could not make. The CRT display becomes an electronic graph of
two instantaneous voltages. The display may be a direct comparison of the two voltages such as a
vectorscope display of video color bar patterns. However, the X-Y mode can almost be used in graph of
any dynamic characteristic if a transducer is adopted to change the characteristic (frequency, temperature,
velocity, etc.) of voltage. One common application is frequency response measurements that the Y-axis
corresponds to signal amplitude and the X-axis corresponds to frequency.
Set the TIME/DIV control knob to the X-Y position (fully counterclockwise), CH1 becomes the X-axis 1.
input and CH2 becomes the Y-axis input.
Adjust X and Y positions by using the horizontal 34POSITION and CH2 56POSITION control knobs 2.
respectively.
Adjust the amount of vertical (Y-axis) defl ection by using CH2 VOLTS/DIV and VAR control knobs.3.
Adjust the amount of horizontal (X-axis) defl ection by using CH1 VOLTS/DIV and VAR control knobs.4.
Calibration of Probe
As explained previously, the probe makes up a wide range attenuator. Unless phase compensation is
properly done, the displayed waveform will be distortion causing measurement errors. Therefore, the
probe must be properly compensated before use. Connect 10:1 probe BNC to the INPUT terminal of
CH1 or CH2 and set VOLTS/DIV switch at 50mV. Connect the probe tip to the calibration voltage output
terminal and adjust the compensation trimmer on probe for optimum Square wave (minimum overshoot,
rounding off and tilt).
(a) Correct compensation (b) Over compensation (c) Insuffi cient compensation