ibaFOB-io-ExpressCard Manual
Issue 1.2
17
Additional information for 3.3 Mbit/s and 2.0 Mbit/s
If the link is running in 3.3 Mbit/s mode or 2.0 Mbit/s mode you’ll find further items:
FO signal strength
This is the difference between the maximum value and the minimum value re-
ceived from the FO unit. This can be maximum 255. The higher this value is the
stronger the FO input signal is.
Device ID
This is the ID of the last device in the FO chain connected to this link.
Telegram format
This is the format of the analog data that is transferred in the telegram. The pos-
sible values are integer, real and S5 real.
Additional information for 5.0 Mbit/s
If the link is running in 5.0 Mbit/s mode you’ll find even more information:
Device firmware date
The firmware date of the connected device.
Gain and filter table
The gains and filters that are configured in the device. This only applies to the
ibaPADU-8-ICP device.
Additional information for 32Mbit Flex
Mode
Status of the connection mode
Ring
: one or more devices (cascade) are bidirectionally connected and the
FO ring is closed.
Open chain
: Only the fiber optic input is connected to a device. The output is not
connected or the FO ring is interrupted.
Roundtrip delay
Telegram cycle in the closed FO ring. The time depends on the number of the
connected devices in the ring (approx. 2 µs per device).
Frame time
Fixed cycle time the data frames are being sent. When the ring is closed, the
frame time is equal to the time between two telegrams.
“Image generation” area
The information on the right side of the dialog describes the image generation. An im-
age is a collection of bytes that the board writes into the PC system memory via DMA.
This image contains all the data of the measured signals on that link.
Here is a short description of the image generation information:
Images processed at interrupt
These counters show how many images where available in the DMA buffer when
the last interrupt fired. This value should normally correspond with the interrupt
time divided by the image sampling rate.
Images in DMA buffer
This is the number of images that are in the DMA buffer. This number should re-
