Grass Valley XtenDD v.4.0.x - Manual (Page 36)

Supplement Software Release V4.0.x XtenDD / DD35 Production Switchers
32 Operating Instructions -- Rev. 2 / 1.2003
The scan procedure takes up to about 8 seconds, depending on the range selected
and the response time of the other devices on the network. If some of the devices
do not appear in the list as expected, you can just press the Scan button again to
re--scan the network. If a device doesn’t show up after repeated scanning, this
means that it doesn’t answer pings, so there is either a network problem, or the de-
vice itself is down.
After you have filled the list with the devices that you want to test, the window will
look like this:
To start pinging these devices, simply press the button labeled Start Pinging. This
will continuously send 32 byte ping request packets to all devices once a second
until you press the same button again (which is now labeled Stop Pinging). While
pinging, the statistics in the device list will be constantly updated.
The column pings sent shows the number of ping packets sent to the device so
far.
The column pongs rcvd shows the number of answers received from the device.
The packet loss column shows the percentage of packets lost. It can intermittedly
go up and down, because at the time of the update, a ping packet might have just
been sent, while the answer has not returned yet. The value should go back to 0
as soon as you stop the pinging.
The avg rtt column shows the average round trip time measured for this device,
i.e. the average timespan between the sending of a ping and the receipt of the cor-
responding pong.
You can sort the device list by clicking the header of the column that you want to
use as the sort criterion.