Logic state analyzer has 3 types of pods:

• Data pods: POD1, POD2, POD3, POD4 for channels 0-31
• Clock pod
• High speed 200 MHz pod

1. You can start the program with command $ cd c:\hardware\analyzer, $main.
2. Short description of functions on display:

There are two ways of using menus:

• WINDOW OFF: This function can be chosen with arrows or by pressing the marked letter of function. With + and – you can select an option inside the function.
• WINDOW ON: A window appears when the function is selected. You can move through window by arrows, +,- , or hotkey. You can setup the window on/off by function Utilities.

MODE is for determining which pods are used for inputs of the logic analyzer, and which are used for the outputs of the pattern generator. The pattern generator is not in use yet. MODE should be put on Logic.

CLOCK determines the source of clock signal:

• Internal selects the inside clock generator. Frequency of collecting data from the input of analyzer is determined by Rate. You must use the high-speed pod for the highest frequency of 200MHz. Only 8 channels may be active in that case. For the frequency of 100 MHz only 16 channels may be active. For the clock frequency of 50MHz or lower, all 32 channels are active. The ways of connecting the pods in the 8-channel, 16-channel, and 32-channel mode is given in the manual (pages 16-17).
• External (EXT.CLOCK0^) uses inputs from clock pod for making the synchronized clock. The highest allowed frequency of the outer clock is 50MHz.
• User defined Combination of 8 clock sources is used, using clock pod. Example of this option is in the window that appears after selecting this option. Clock can be in positive or negative logic. In positive logic, leading edge is used for resolute combinations of the clock, and trailing edge for the negative logic.

RATE determinates the frequency of an internal clock generator with range from 20Hz to 200MHz. Data collecting with the internal clock is asynchronous so the frequency must be at least 2 times higher than the frequency of data changing in the testing circuit.

Relationships between the number of channels, memory and speed:

ZOOM determinates the amount of data displayed on screen. Values have range from 1/8X to 32X.

GO: –Yes begins the data acquisition process. –No is for stopping the process.

DISPLAY determinates the way of data presentation:

• State: Data is presented in bytes and decoded in binary, decimal, hexadecimal, and ASCII formats.
• Timing: Data is presented with a time diagram.
• MIX1, MIX2, MIX3: Combination of the State and the Timing presentation

ACKUIRE makes 3 different ways of data acquisition possible:

• Once: Only one item of data is collected. Before this action place GO on Yes.
• Repeat randomly: Data collecting cycle is repeated after finishing the previous cycle (time interval between 2 cycles depends on processor speed).
• Repeat on trigger: Data collecting cycle begins after the trigger word.

BACKUP DATA There are two buffers for data storage. This allows comparing of the previous cycle with the next cycle.

• Yes: Allows the current data to be placed in backup buffer.
• No: New data is placed in backup buffer.

WRITE MEMORY: This option is used only for the pattern generator. Otherwise it is No

EXIT: –Quit: For quitting the LSA. –Push to DOS: For going to DOS. –Abort: For quitting this option.

TRIGGER is used for synchronizing the beginning of data collecting with the appearance of the input combination that is equal to the trigger word. In Acquire options Repeat on Trigger and Once are used. Position of the trigger word in buffer is determined with the Move Trigger function. External trigger signal is available, too.

In the 8-channel mode trigger word is 8 bits wide and it is for the channels 0-7. Values of the bits can be 0,1, or X. In the 16-channel mode trigger word is 16 bits wide, and in the 32-channel mode trigger word is 32 bits wide. If only one trigger word is used then you can write it right from the Trigger function. First X is for the channel 31, and the last X is for the channel 0. Trigger word window is opened by pressing the "T" key twice, or by choosing the Trigger Setup from the Utility function. In this window 16 different trigger words W0-WF can be defined. There are numbers on the top of the window representing the channels. Allowed values in trigger word are 0,1, or X (don't care). There is a space for the sequence of trigger words at the bottom of the window. In this field you can specify the order of use for the trigger words. One trigger word can be used up to 16 times or never. You would enter the mark of the trigger word at the number you want in sequence.

• True: Triggering when the whole sequence of trigger words appears in the input data.
• False: Triggering when, after the whole sequence of trigger words is equal to the data on input, data on input changes, so that the last trigger word the in sequence is not equal to it.
• Trigger level: Triggering always when the condition is true.

SEARCH points the location where the wanted data is, or gives message "NOT FOUND." You can type a wanted data on the right side of the Search option. First X is for the channel 31 and last is for the channel 0. Allowed values are 0,1, or X. You can enter the whole data that you are looking for or just a part of it. Alt-S is for the forward search, Alt-R is for the backward search.

VOLT 1 & 2 determinates the medium voltage value between the logical ‘1’ and the logical ‘0.’ Volt 1 is for the POD1 and POD2, Volt 2 is for the POD3 and POD4. Minimal voltage value for the logical ‘1’ is 1V higher than the medium voltage level. Maximum voltage value for logical '0' is 0.6V lower than the medium voltage level.

FILE allows you to work with files and drawers without exiting to DOS. Save Data File, Load Data File, Save Settings… allows saving data and options to files you can load later.

UTILITY allows the different functions like Trigger Setup, changing the Board Address, Print for printing the screen…

MOVE controls moving on screen and cursor position:

• Screen H is for the horizontal data moving.
• Screen V is for the vertical data moving.
• Cursor A, Cursor B, and Trigger are for moving the cursor A, cursor B, and Trigger Word through buffer. After selecting the option, moving is performed with arrows.

Cursors A & B are used for the positioning of the referent points in buffer. Their buffer address and time distance between them are shown on the upper right edge of the screen.

Trigger position determines the number of data shown before and after the trigger word. For example, in the 32-channel mode, if trigger position in buffer is 2048, then the half of the buffer is used for data before the trigger word and the half of buffer for data after the trigger word. If trigger position in buffer is 0, no data before the trigger word will be presented and buffer is filled with 4K of data after the trigger word.

Changing the position of trigger and cursors A & B:

1. With arrows, when Move function is set on this option.
2. Hotkey for the cursor A is CTRL + arrows.
3. Hotkey for the cursor B is ALT + arrows.
4. Hotkey for the trigger is SHIFT + arrows.

For positioning the window around trigger, cursor A, or cursor B, hotkey is Alt+T, Alt+A, Alt+B.

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