Section 8: Troubleshooting guide
Models 707B and 708B Switching Matrix Reference Manual
8-8
707B-901-01 Rev. B / January 2015
LXI LAN status indicator
Most LAN network interface cards have two LEDs, one that indicates LAN traffic and one that
designates the LAN speed (10 MBits, 100 MBits, 1 GBits) through the color of the LED. LXI goes one
level higher than this and states that all LXI compliant devices need a LAN status indicator. This can
be an LED or an indicator on a display. It shows if the instrument has a valid IP address or is in a fault
state.
When diagnosing a LAN connection issue with an LXI instrument, see if the LAN status indicator is
signaling a valid or fault condition. If there is an error, you cannot communicate with the instrument
through the LAN connection. In this case, you need to check the LAN parameter settings from the
front panel of the instrument. Make sure if you change a LAN setting through the front panel that you
select the “Apply LAN Settings” for the changes to take affect.
Initialize the LAN configuration
The LXI specification mandates that all instruments that conform to LXI need a LAN reset
mechanism.This can be a recessed switch or a menu option on the front panel that will put all the
LAN settings back to known defaults. If you cannot communicate with your instrument, perform this
reset.
If you perform a reset, the instrument is returned to DHCP and Auto-IP enabled. If you set your
computer to match, you should be able to use a discovery tool to determine the IP address and
communicate with the instrument again. Also check the LAN status indicator to verify that there are
no faults.
To reset the Model 707B or 708B, from the front panel, select
MENU
, then select
LAN > RESET
.
Install LXI Discovery Browser software on your computer
You can use the LXI Discovery Browser to identify the IP addresses of LXI-certified instruments.
Once identified, you can double-click the IP address in the LXI Discovery Browser to open the web
interface for the instrument.
The Keithley LXI Discovery Browser is available on the
(
http://www.keithley.com
).
To locate the Keithley LXI Discovery Browser on the Keithley website:
1. Select the
Support
tab.
2. In the model number box, type
707B
.
3. From the list, select
Software
and click the search icon. A list of software applications for the
instrument is displayed.
4. See the readme file included with the application for more information.
For more information about the LXI Consortium, see the
(
http://www.lxistandard.org/
).