Measurement Computing IOtech 640 Series - Manual (Page 92)

B-2 TCP/IP and Resource Tests for 640 & 650 Series 907493 Appendix B
What does the TCP/IP test tell me?
The TCP/IP test provides test results for “Pinging Device” and “TCP Connection Test.”
Pinging Device. The Pinging Device test is an ICMP (Internet Control Message Protocol) ping test. In
addition to indicating either “Passed” or “Failed,” the test displays;
(a) The round-trip time of the ping, for example, <10 ms.
(b) Packet Loss expressed as a percent of data lost.
A long ping round trip time, for example, >50 ms and/or any packet loss indicates a slow network that is
not optimized.
If the Pinging Device Test fails a <Details> button will appear just above the <Resource Test> button. If
this is the case, click the <Details> button to obtain possible causes and possible solutions.
TCP (Transmission Control Protocol) Connection Test. The result of the TCP test will be either
passed or failed. If the TCP test failed a <Details> button will appear just above the <Resource Test>
button. If this is the case, click the <Details> button to obtain possible causes and possible solutions.
How to run the Resource Tests
For Ethernet devices, such as 640e and 650e, you can run the Resource Test after a successful completion
of the TCP/IP test with a simple click of the <Resource Test> button.
What does the Resource Test tell me?
The Resource Test includes two categories of test, Resource Tests and Performance Tests.
Resource Tests. The resource tests are intended to test system capability for the current device
configuration. Resource tests are pass/fail. Test failure may indicate a lack of availability of the resource,
or a possible resource conflict.
Base Address Test – This resource test checks the base address for the selected port. Failure of this test
may indicate that the port is not properly configured within the system. See relevant operating system and
computer manufacturer’s documentation to correct the problem.
Interrupt Level Test – Tests the ability of an Ethernet port to generate interrupts. Failure of this test may
indicate that the Ethernet port may be currently unable to generate the necessary hardware interrupt, while
other Ethernet devices may work OK in this mode. Some devices (such as printers) do not require
interrupts to work properly. See relevant operating system and computer manufacturer’s documentation to
correct the problem.
Performance Tests. These types of tests are intended to check various device functions, using the
current device configuration. Performance tests provide quantitative results for each supported functional
group.
Test results represent maximum rates the various operations can be performed and vary according to port
hardware capabilities.
The ADC FIFO Input Speed part of the test results in a display of the maximum rate at which data can be
transferred from the tested device’s internal ADC FIFO to computer memory through the Ethernet. Results
are given in samples/second, where a sample (3 bytes in length) represents a single A/D value.
Reference Notes:
¾ If you experience difficulties, please consult additional user documentation, as applicable,
before calling technical support. User documentation is included on your data acquisition
CD, and is installed automatically as a part of product support when your software is
installed. The default location is the Programs Group.
¾ Documents can be read directly from the data acquisition CD via the <View PDFs> button
located on the CD’s opening screen.