LCX_UserManual_en_08_1.pdf - 第25页
Getting started R&S ® LCX Series 25 User Manual 1 179.2260.02 ─ 08 4.1.8 Connecting USB devices The "USB A" connector is at the front panel . Y ou can connect or disconnect all USB devices from the R&S …
Getting started
R&S
®
LCX Series
24User Manual 1179.2260.02 ─ 08
4.1.7 Connecting to LAN
Establishing the LAN connection
The R&S LCX provides Ethernet (LAN) connectivity. Provided the corresponding rights
are assigned, you can use these interfaces for remote control and data transfer from a
controller PC. The controller PC must also be connected in the network.
The "LAN" connector is at the rear panel.
To connect the R&S LCX to the LAN:
1. Connect the "LAN" socket using an RJ-45 cable to the LAN.
By default, the R&S LCX configuration uses DHCP that assigns the IP address
automatically.
2.
NOTICE! If the R&S LCX cannot obtain an IP address automatically, or cannot
establish the connection, the icon in the status bar turns red.
Possible reasons are that the LAN does not support DCHP or requires a specific
TCP/IP configuration, or that the connection is missing.
To troubleshoot the problem, proceed as follows:
a) Check if you have connected both the R&S LCX and the controller PC to the
LAN.
b) Consult your network administrator to request support and an IP address, if
necessary.
c) If necessary, assign the IP address manually as described in "Assigning the
LAN interface addresses manually" on page 169.
If switched on and connected, the R&S LCX indicates the address information and
LAN parameters in the "Ethernet Settings dialog".
Figure 4-1: LAN settings dialog
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Getting started
R&S
®
LCX Series
25User Manual 1179.2260.02 ─ 08
4.1.8 Connecting USB devices
The "USB A" connector is at the front panel. You can connect or disconnect all USB
devices from the R&S LCX during operation. But do not remove an external USB mem-
ory stick while the instrument is saving data, since it leads to loss of data.
To connect USB storage devices
USB storage devices, such as memory sticks, allow easy data transfer from or to the
R&S LCX. You can also use them for firmware updates.
► Connect the USB storage device to the "USB A" connector.
If you use the front panel connectors, connect the USB storage device directly,
without connecting cable. Connecting cables can cause electromagnetic radiation
and impair the measurement result.
To connect USB devices with an external power supply
It is also possible to use a USB device with an external power supply.
1.
NOTICE! Connected devices with external power supply can feed back current into
the 5 V power supply of the USB interface and thus damage the R&S LCX.
Make sure that there is no connection between the positive pole of the power sup-
ply and the +5 V power pin of the USB interface (VBUS).
2. Connect the USB storage device to the "USB A" connector at the front panel.
4.1.9 Connecting a test fixture
The R&S LCX enables you to measure passive components like capacitors, coils,
resistors, transformers. To measure such components requires the use of suitable
measurement adapters, in this context considered as test fixtures.
For information on the test fixtures available for the R&S LCX, see Measurement Set-
ups > About Test Fixtures.
The test fixtures are connected firmly to the four BNC connectors H POT (high poten-
tial), H CUR (high current), L POT low potential) and L CUR (low current) at the front
panel.
The following instructions describe the mechanical connection of the adapter only.
Before starting a measurement, consider the prerequisites and steps to be performed
before as described in Section 4.3, "Trying out the instrument", on page 34.
Connecting a test fixture to the instrument
To connect a 4-terminal test fixture to the R&S LCX:
1.
NOTICE! Check all terminals to make sure that they are not damaged.
NOTICE! Before connecting, discharge all components. Externally supplied voltage
can damage the BNC connectors of the R&S LCX.
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R&S
®
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26User Manual 1179.2260.02 ─ 08
Turn the levers at the "BNC" connectors of the test fixture to the left to release the
lock (1).
1
2
Figure 4-2: Connecting a test fixture
2. Carefully plug the test fixture to the four "BNC" measurement connectors of the
R&S LCX (2).
3. Turn all levers to the right to tighten the connection (3).
3
Figure 4-3: Fastening the test fixture
The mechanical test setup is ready for operation.
Connecting a test fixture with the BNC-to-BNC extension
If you are using the BNC-to-BNC extension (option R&S LCX-Z11), you can connect all
devices as described in Connecting a test fixture to the instrument. We recommend
that you keep the order as follows:
1. Connect the BNC-to-BNC to the R&S LCX.
Proceed as described in step 1.
2. Connect the test fixture to the extension.
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