Hameg Instruments HD 148 Bedienungsanleitung Seite 21

2: ONLINE AUTOMATIC
In this Graphic Printer mode, data transfer is triggered
by the oscilloscope
must be set to SINGLE
pressed (so that the RESET LED lights up).
If the oscilloscope input signal now exceeds the trigger
threshold, then the input waveform
time is sampled and stored in memory. Once this has
been performed, a signal is sent to the printer, which
initiates data transfer. The data received by the Graphic
Printer are immediately
signal is sent from the Graphic Printer to the oscilloscope
to prepare it for the next event.
This mode permits automatic
of test signals.
3: ONLINE TIMER
If the Graphic Printer is in this operating mode, then
data are transferred
preprogrammed point
grammed starting time is reached, the image displayed
in the oscilloscope screen at that moment in time is
automatically printed out.
It is also possible to obtain repeated, cyclic printouts by
specifying atime interval (e.g. every hour). The interval
can be specified in minutes; the maximum possible
interval is 24 hours.
The Graphic Printer may be powered down between
two printout cycle times without causing any problems.
4: STORE REFERENCE
In this mode the contents of the scope's memory can
be downloaded to one of the printer's five reference
buffers without being printed out. The time and date,
scope type and parameter field data (if entered at the
printer or received from the scope) are stored along
with the signal data.
Use the SETUP +/—keys to specify the reference buffer.
Then press the PRINTbutton to transfer the data.
While data are being transferred, this message appears
in the display: DOWNLOAD f(SCOPE MEMORY).
In this way, the data for 5 complete printouts can be
archived. The contents
when the printer is powered down.
5: RECALL REFERENCE
This mode is for printing out the contents of one of the
5 reference buffers. To do so, first select a buffer with
the SETUP +/— keys. The time and date at which the
Subject to change without notice
itself; for this to work, the scope
mode and the RESET
at that moment in
printed out. Afterwards a reset
continuous monitoring
from the oscilloscope
in time. When the prepro-
of the buffers remain
data were
displayed for your information.
button.
button
Attention: The reference
printer is reinitialized. In this case, attempts to set one
of the buffers will cause the "01-01 00:00" to appear
in the date/time
'REFERENCE MEMORY EMPTY", and no printout is
performed after pressing the PRINT button.
6: ONLINE SIG./REF.
In this operating mode, one of the reference waveforms
stored in the printer with STORE REFERENCE can be
selected with the SETUP +/—keys and printed out
together with the current
memory. Use the PRINT keyto start and abort printouts.
The reference
Attention:
at a any reference signals displayed on the CRT screen will
take priority over those downloaded to the printer.
If the selected buffer does not contain a stored reference
signal, then the message
EMPTY" will appear in the first line of the display. At
the same time, the number of the selected reference
buffer and the date/time
are shown in the second display line. If the PRINT key
is then pressed to initiate printout, the current signal
will be printed out with a horizontal
graticule.
This operating mode is intended to facilitate signal
comparisons.
In order to obtain
only compare signals with one another that have
been captured
following
1 . The scope with the current signal must be of the
same model as the oscilloscope from which the
reference waveform
2. The current signal must have been captured in the
same scope operating mode (MONO or DUAL) as the
reference signal.
intact
3. The parameter settings must also be identical.
It is therefore
with " RECALL REFERENCE"
function. The conditions
waveform
printout.
downloaded to the reference
Then press the PRINT
buffers are cleared
display, along with
contents
channels are marked
When operating the printer with the H M 1007
"REFERENCE
information
usable results,
under the same
prerequisites must be met:
has been downloaded.
advisable to first perform
before invoking this
under which
was captured can then be seen on the
buffer are
when the
the message
of the scope's
REI/RE2.
MEMORY
"01-01 00:00"
line above the
it is important to
conditions. The
a printout
the reference
ENGLISH •7