60
Remote Control
If a USB stick is connected to the oscilloscope, you can
view the USB stick content via USB-MTP, or you can copy
files to the PC. The USB stick displays as USB FRONT in
the folder list. Contrary to the image preview in LIVE DATA
which is only available via right click and the OPEN option,
the image preview in USB FRONT is operational because
the size indicated in Explorer corresponds to the actual file
size. The file size in Explorer is overestimated at times to
prevent Windows from simply truncating files while the PC
is receiving them.
14 .3 .1 Live Data
The LIVE DATA folder contains several subfolders and
files. Each time a screenshot is opened, a current snapshot
will be taken and sent to the PC. Double-clicking the
snapshot will open the image preview which, however,
fails to function in combination with the R&S®HMO1002 or
R&S®HMO1202 series. Due to file compression, the size of
the actual file sent is less than indicated in Explorer. This
causes the image preview to issue an error. Therefore,
screenshots can only be opened via right click and the
OPEN option. The Settings file supplies the current instru
-
ment settings in the respective format.
The folders CHANNEL, BUS and POD contain two sub-
folders and a README.TXT. The subfolders contain files
for the curve data in various formats. The files in the Ac
-
quisition Memory folder provide data from the acquisition
memory, whereas the files in the
DISPLAY DATA folder
only provide visible curve data. The folders MATH and
REFERENCES only contain visible curve data and therefore
no subfolders are available. The respective INFO.TXT files
contain significant information relating to the curves, such
as name, units, samples etc. The file content is generated
while the file is being sent to the PC. It is therefore recom
-
mended to only read curve data when the acquisition has
been suspended (STOP mode). Reading the acquisition
Fig. 14.10: Folder display
Fig. 14.11: Folder display with USB stick
Sending files to the oscilloscope is only supported via UPLOAD
drive. All other drives are read-only. There is no way to remove the
write protection.
memory is only useful when the acquisition has been sus-
pended, otherwise, only the screen data will be read. To
continue acquisition while reading the data may result in
curve data from different acquisitions.
14 .3 .2 Upload
The UPLOAD folder is a temporary drive in the RAM of the
oscilloscope. The content of this folder is purged when the
instrument is turned off or restarted. This folder is intended
to send specific files to the oscilloscope. If the PC copies
a file into this folder, the oscilloscope will verify if this file
can be loaded directly. The file transfer of .HDS and .SCP
for instrument settings, .HLK for license keys and .HFU for
firmware updates are supported. Other file transfers will
be ignored. Instrument settings and license keys will be
loaded without the PC requiring additional information. A
firmware update must be started directly on the oscillo
-
scope via soft menu key EXECUTE.
14 .4 Ethernet
For the direct connection with a host (PC) or indirect
connection over a SWITCH, a doubly protected network
cable (e.g. CAT.5, CAT.5e, CAT.5+, CAT.6 or CAT.7) is re-
quired, equipped with an Ethernet plug type the RJ-45 at
each end. Either an uncrossed or a crossed network cable
(cross over cable) can be used.
14 .4 .1 IP networks (IP – Internet protocol)
In order that two or several network elements (e.g. measu-
ring instruments, host/PC‘s, …) can communicate over a
network with one another, some fundamental connections
have to be considered, so that data communication is error
free and unimpaired. For each element in a network an
IP address has to be assigned, so that they can exchange
data among themselves. IP addresses are represented
(with the IP version 4) as four decimal numbers separated
by points (e.g. 192.168.15.1). Each decimal number is re-
presented by a binary number of 8 bits. IP addresses are
divided into public and private address ranges. Public IP
addresses will be able to route by the Internet and an Inter-
net service Provider (ISP) can to be made available. Public
IP addresses can be reached directly over the Internet to
directly exchange internet data. Private IP addresses are
not routed by the Internet and are reserved for private net-
Fig. 14.12: Folder structure of LIVE DATA