Overview Of The Controls - Hameg HM400 Handbuch

O v e r v i e w o f t h e c o n t r o l s

Overview of the controls

1
POWER (button): Mains on/off
2
ADJUST – / + (buttons)
Allows to change diverse settings depending on the selection
4
with the button SELECT
3
Indicator LEDs
INTENS: The LED will light up if intensity adjustment was
selected with the button SELECT
FOCUS: The LED will light up if focus adjustment was selected
4
with the button SELECT
TRACE: The LED will light up if trace rotation adjustment was
selected with the button SELECT
4
SELECT (button)
Allows to change some settings relating to the crt like intensity,
focus, trace rotation by pressing the buttons ADJUST
the respective LED lights up.
5
POSITION 1 + POSITION 2 (knobs)
Changes the trace position of channel 1 or channel 2 resp..
6
SAVE / RECALL (LED button)
In conjunction with any of the mode buttons
allows to address the settings memories
7
AUTOSET (button)
Automatically selects a reasonable instrumentsetting for most
signals
8
AUTO / NORM (LED button)
Selects either automatic (AUTO) or normal (NORM) triggering.
The LED will light up if normal triggering was selected, other-
wise automatic triggering is enabled.
POWER
32
POWER POWER
CH1 CH1
CH2 CH2
DUAL DUAL
ADD ADD
XY XY
COMP COMP
COMP . ±10 V
pp
∼ 50 Hz
TESTER
33
30 Subject to change without notice
4
4
2
when
32
this button
2 3
4
POWER
ADJUST SELECT
INTENS
+ +
FOCUS
TRACE
1
5 6 7
ADJUST SELECT
!
INTENS
+ +
FOCUS
TRACE
SAVE push long
RECALL
POSITION 1 POSITION 2
1 1–6
AUTOSET
2
VOLTS / DIV
VOLTS / DIV
.2 .2
.1
.5 50 .5
3
VAR
1 20 1
10
2 2
5 5 5
5 10 2 10
1
20 20
V mV V
6
DC DC
AC GND AC GND
CH 1 CH 2
X-INP INPUTS
1 MΩ II 15 pF
max.
400 V
p
!
CAT I
14 24 29 14 24 29
25
25
9
SLOPE (LED button)
Selects either the positive or the negative signal slope. The LED
will light up if the negative slope was selected.
10
TRIGGER LEVEL (knob)
36 Changes the trigger level of the time base.
36 11 TRIG'd (LED)
The LED will light up if the instrument receives a valid trigger
signal and operates in triggered mode
36 12 X-MAG/x 10 (LED button)
If the x 10 magnifi er is enabled, the display will be expanded
in X direction around the screen center ten times with a cor-
responding change of the time base speed. The LED will light
up if the magnifi er is active.
13
X-POSITION (knob)
Changes the X position of the trace(s)
37
14
VOLTS/DIV; CH1 + CH2 (knobs)
Channel 1 or channel 2 sensitivity selection. By pressing the
corresponding knob, the variable will be activated, and, as long
as it is activated, the display of the sensitivity will blink, because
37 the sensitivity is uncalibrated.
15
TIME/DIV (knob)
37 Selects the time base speed. By pressing the knob, the variable
will be activated, and, as long as it is activated, the display of
the time base speed will blink, because the time base speed is
uncalibrated.This knob also has a third function: hold-off time
37 adjustment, see 27
16
CH 1 (LED button)
Selects channel 1 as the trigger source as indicated by the LED.
37
17
CH 2 (LED button)
Selects channel 2 as the trigger source as indicated by the LED.
8 9 10 11 12 13
5
HM400
40 MHz ANALOG OSCILLOSCOPE
AUTO TRIGGER TRIG'd
X-POSITION
LEVEL
NORM
SLOPE X-MAG
x10
TIME / DIV
.2 .1
.1
TRIGGER
ms
.5
50
1
CH 1 AC
20
2
10
5
CH 2 DC
10
5
20
2
LINE LF
50
1
.1s
mV
.2s .1
EXT TV
HOLD
OFF
INV ON Z-INP
EXT. TRIG / Z-INP
PROBE ADJUST
1 kHz / 1 MHz
ca. 0.2 Vpp
30 31
26 27
.
TRIGGER
CH 1
50
VAR CH 2
20
10
5
LINE
2
1
.5
µs
.2
EXT
1 MΩ II
15 pF
max.
100 V
p
16 17 18 19
15
28
37
37
37
37
37
37
37
38
38
AC
DC
LF
TV
23 21 20
22