Agilent Technologies E5810A - Manual (Page 124)

124 Chapter 4
Troubleshooting Information
Checking PC Client Connections
Runtime Error Messages
Common runtime errors that may occur in your programs when using an
E5810 are described in the following table, where “viopen
” is a VISA open
command.
Message Description/Actions
viopen
fails:
Invalid address
errors
Use the E5810 Welcome page on your Web browser to verify that the
GPIB address, GPIB interface name, and/or GPIB logical unit
configuration values are correct. Or, you can use Connection Expert. To
open Connection Expert, click the IO icon on the Windows taskbar
notification area and then click
Agilent Connection Expert .
viopen
fails:
No connection
The connection to the E5810 failed for one of these reasons:
„ A TCP/IP network timeout occurred because the network
connection is down or the E5810 is down.
„ The E5810 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 E5810 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 E5810 has not responded within the
appropriate timeout time because:
„ The network connection is down or the E5810 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 PC. To set this value, click the IO icon on
the Windows taskbar notification area and then click
Agilent
Connection Expert .
In the Connection Expert window, select (highlight) the LAN
interface that is associated with your remote GPIB and/or remote serial
interface. Click the Change Properties... button in the detail pane on the
right. When the LAN Interface properties dialog appears, set the desired
Client delta timeout value and then click the OK button.