Hameg Instruments HD 148 Bedienungsanleitung Seite 24

settings. If the settings are such that no VOLT/DIV.
coefficient is displayed, then there will be no output in
the parameter field of the printout either.
If the Graphic Printer is connected to an HM408, then
the VOLT/DIV. coefficient
read in by the Graphic Printer and printed out. The
setting entered manually
unchanged, but is ignored.
5: PROBE ATTN. CHI/2
For entering the attenuator probe ratio used for taking
measurements (1:1, 10: 1, 100: 1 or 1000:1).
The CURSOR < and CURSOR > keys are used to
select the channel. The
specified using the SETUP +/—keys.
The set values are automatically applied to the VOLT/
DIV. coefficient that
transmitted by the scope (HM408). The actual VOLT/
DIV. coefficients resulting from the setting of the volts/
division switch and the entered probe attenuation
then printed out in the parameter field.
6: MINIMAX CHI/2
This function is used to trigger a printout each time the
signal amplitude falls
minimum and maximum
is a sub-function of
mode, the trigger level of the scope must be situated
within the MINIMAX
The LCD display shows for each channel whether this
function is enabled for it. If it is disabled,
appears; otherwise a combination of digits is shown
(e.g. 2-8). In addition, a cursor
the digits. The CURSOR < and CURSOR > keys in the
SETUP field can be used to select
digit activated in this way can then be changed with the
SETUP +/— keys. If the display shows "OFF" for a
channel while the cursor is positioned
pressing + or— will cause a numerical value to appear
instead.
The horizontal graticule lines on the scope screen are
numbered from 1 to 9. Number 1 corresponds
bottommost horizontal graticule line. Moving from
there towards the top, the number
incremented. Accordingly,
line has the number
The first digit (e.g. "1 " in "1-9") indicates the lower
voltage limit, and must therefore
second digit (e.g. the "9" in "1-9"),
the upper voltage limit. As long as the input signal
remains within the range thus defined, the MINIMAX
10 • ENGLISH
transmitted by the scope is
by the user remains
attenuation ratio can then
has been programmed
below or exceeds
levels. The MIN/MAX
ONLINE AIJTOMATIC.
window.
is visible beneath
the channel.
beneath
is successively
the uppermost
9.
be smaller than the
which stands for
function
falls below the lower limit or rises above the upper
limit, a printout is made - provided that the Graphic
Printer and the scope are in appropriate
modes. If both digits for a channel are the same (e.g.
"5-5"), then the word "OFF" will appear in the display
instead and the MINIMAX
also the factory and default setting).
After the MINIMAX
Graphic
AUTOMATIC
set to SINGLE mode. Then, if the input signal received
by the scope exceeds the trigger level, the contents of
the scope's
be
AUTOMATIC
they are first compared with the programmed MIN/
MAX values.
below the lower limit or exceeded the upper limit, and
or
only then, a printout is made. Afterwards the Graphic
Printer sends a reset signal to the scope to ready it for
the next trigger event.
are
If, on the other hand, the signal has remained consistently
inside of the window defined by the MINIMAX values,
then no printout is performed. In this case as well, the
Graphic printer sends a reset signal to the scope.
certain
function
Note: In order to prevent unnecessarily large consump-
In this
tion of paper when working with periodic signals that
repeatedly cross a MIN/MAX
are made in such cases. Not until the signal has
returned
it again is a new printout made.
"OFF"
7: SET DIM. CHI/2
Forsetting any desired measurement units for Channels
I and II instead of the VOLT/DIV. coefficients.
The
This option is useful when employing test sensors
(transducers)
than voltage, and it is wished to document these in the
it,
parameter field of the printout (e.g. mW/div., Nm/div.,
K/div., mA/div., etc.).
Forapplications of this kind, up to 8freely programmable
ASCII characters (in the range from 32 = space to 122
to the
= "z") can be entered for each channel. They can be
called up with the SETUP +/— keys.
graticule
The 8 characters on the left are assigned to Channel l,
and the 8 characters on the right to Channel II. The
cursor can be moved to all character positions.
This function
or both of the channels entering
place of the character string for the corresponding
channel(s).
is not triggered. But if the signal amplitude
function
ranges have been defined,
Printer must be switched
mode. Accordingly,
memory are not
mode -immediately
If the signal amplitude
limit, only two printouts
to inside the MIN/MAX window
to measure physical parameters
can be turned off (disabled)
Subject to change without notice
operating
is disabled (this is
the
to ONLINE
the scope must be
- like in ONLINE
printed out; instead,
has dropped
and then left
other
for either
a space at the 1st