Combined Channel Status

The Combined Channel Status icons display the current combined channel status, and provides properties to control the inter-channel synchronization operation.

Combined Channel Status Icons

	Unlinked
	Linked
	Both channels synchronized as interleaved pattern
	Both channels are not synchronized as interleaved pattern

Combined Channel Configuration Settings

Use these setting to configure the combined channels' synchronization parameters and to automatically set both channels' sampling points.

Detector Pattern

Auto, AllZeroes, Allones, Prbs7, Prbs11, Prbs13, Prbs15, Prbs20, Prbs 23, Prbs31, RamGrab, RamShift, InvPrbs7, InvPrbs11, InvPrbs13, InvPrbs15, InvPrbs20, InvPrbs23, InvPrbs31, InvRamGrab, InvRamShift

Selects the pattern detection mode in use for the combined channel. This selection is only available if the Link Mode Status is selected to be Interleaved. Detection may be set to look for a specific pattern type, or it may be set to Auto, which searches through all the available pattern types to find one that synchronizes. There are two User Pattern memory Ram pattern modes. In Ram Grab mode, the system grabs the specified Ram Words number of 128-bit words from the associated input bit-stream and compares two subsequent grabs of the same number of words with the first. If all compare okay, then a successful synchronization is declared. In Ram Shift mode, you must previously load the detector User Pattern memory with contents by deploying a selected user pattern from the User Patterns Status configuration controls. Synchronization is achieved when the incoming bit stream compares precisely with the user pattern memory contents. This mode of synchronization can require a few seconds depending on the size of the user pattern.

Auto Resync Threshold

Decimal,

1 - 254

Selects the automatic resynchronization threshold level. This is the number of consecutive errored 128-bit words required to trigger a new automatic synchronization attempt. The lower the number, the more-sensitive the automatic resynchronization trigger becomes.

Autoset Button

Command Button

Selects and optimum sample point time delay and voltage threshold for subsequent BER testing. The optimum point is designed to be close to the center of the eye diagram. You can also set the sample points manually using the P1 and P2 cursors on the Eye Diagram Application. The Autoset process takes a few seconds and displays a message on the dialog window indicating the eye height that is useful to know there is sufficient margin for good BER testing.

Resync Button

Command Button

Manually triggers an resynchronization attempt with the incoming data stream. If a specific data pattern is selected as the Detector Pattern, then only that type of pattern is searched for. If Auto pattern is selected, then all the available patterns are searched, starting with the one that was most-recently synchronized with.