User`s guide

4 Troubleshooting the E5810B
Checking PC Client Connection
98 E5810B User’s Guide
Runtime error messages
Common runtime errors that may occur in programs when
using the E5810B are described in the
Table 4- 6, where
viopen is a VISA open command.
Tab le 4-6 Common runtime messages
Message Description
viopen fails: Invalid address errors Use the E5810B Welcome page on your Web browser to verify that the
GPIB address, GPIB interface name, and GPIB logical unit configuration
values are correct, or you can use Keysight Connection Expert. To open
Keysight Connection Expert, select the IO icon on the Windows taskbar
notification area and then select Keysight Connection Expert.
viopen fails: No connection The connection to the E5810B failed for one of these reasons:
• A TCP/IP network timeout occurred because the network connection
is down or the E5810B is down.
• The E5810B has reached its maximum concurrent client connections
(16) and this new connection was refused. You may need to have a
client close its connection or you may need to reboot the E5810B to
close all client connections to allow a new connection to be made. Up
to 16 sessions can be in use at any one time.
viopen fails: Timeout The client has timed out. The E5810B has not responded within the
appropriate timeout time because:
• The network connection is down or the E5810B is down.
• The server is busy performing an operation for a different client. You
may need to increase the client delta timeout configuration value on
the LAN client’s PC. To set this value, select the IO icon on the
Windows taskbar notification area and then select Keysight
Connection Expert.
In the Keysight Connection Expert window, select the LAN interface
that is associated with your remote GPIB and/or remote serial
interface. Select Change Properties... in the detail pane on the right.
When the LAN Interface properties dialog box appears, set the
desired client delta timeout value and then select OK.