Chapter 2: Probing and Selecting the Sampling Mode

Choosing the Sampling Mode

To select the state mode

1.Open the logic analyzer Setup window.

2.Select the Sampling tab.

3.Choose the State Mode option.

You can also select the state sampling mode in the “Pod Assignment Dialog” on page 175.

To select the state speed configuration

1.In the Sampling tab, with State Mode selected, select one of the state analyzer configurations.

The selected configuration specifies the speed up to which the state mode sampling clock will match input clock edges from the device under test. For example, in the 800 Mb/s / 64M State configuration, the state mode sampling clock will match input clock edges up to 800 MHz.

The selected configuration also specifies the memory depth for samples and whether only half of the logic analyzer channels are available.

You can choose from:

1500 Mb/s / 128M Half Channel

In this configuration: The input clock signal must be periodic, and both edges indicate valid data. The clock input can only be used as a clock and not as an extra data channel. The logic analyzer setup/hold window is 500 ps, and eye finder must be used to automatically adjust sampling positions. The limited set of 16760 Half Channel State trigger functions are available. In half-channel mode the analyzer accesses only the even channels (0, 2, 4, etc.).

1250 Mb/s / 128M Half Channel

In this configuration: The input clock signal must be periodic, and both edges indicate valid data. The clock input can only be used as a clock and not as an extra data channel. The logic analyzer setup/hold window is 1 ns, and sampling positions may be adjusted automatically or manually. The limited set of 16760 Half Channel State trigger functions are available. In half-channel mode the analyzer accesses only the even channels (0, 2, 4, etc.).

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Agilent Technologies 16760A manual To select the state mode, To select the state speed configuration