Marker Source Selection Dialog Box

When Parameter Optimization in the Signal Generator node is set to Auto, Marker 3 and Marker 4 source selection in Waveform Setup node and the marker routing selected in Dual ARB Marker Utilities are overridden.

To manually set Marker 3 and Marker 4 source, the marker routing, or both, set Parameter Optimization to Off.

Use the Marker Source Selection dialog box for the Marker 1, 2, 3, or 4 Source cells to set active marker points within the waveform. The cells are located in the Waveform Setup parameter configuration table.

None

Waveform Start

1 ms subframe pulse

10 ms frame pulse

20 ms frame pulse

40 ms frame pulse

RF ALC Control

RF Blanking Control

Timing Control

User Defined Bits

Generated Pattern

None

Sets all marker points to zero (inactive).

Waveform Start

Sets the first five marker bits of the frame to 1. (Sets an active marker for the first five waveform samples.)

This parameter was previously labeled Frame in older versions of the Marker Source Dialog Box, but the functionality is the same. Frame API command is available for backwards compatibility.

1 ms subframe pulse

Sets the first five marker bits of every 1 ms to 1.

10 ms subframe pulse

Sets the first five marker bits of every 10 ms to 1.

20 ms subframe pulse

Sets the first five marker bits of every 20 ms to 1.

40 ms subframe pulse

Sets the first five marker bits of every 40 ms to 1.

RF ALC Control

Activates the automatic leveling control (ALC) function. When enabled, the ALC monitors and controls the RF output power of the signal generator.

RF Blanking Control

Assigns a specific marker to activate RF blanking. ALC hold is automatically enabled during output blanking.

Timing Control

This marker is generated by the waveform.

User Defined Bits

Opens the user Closeddata entry area, in which you can customize the marker signal.

The maximum number of marker bits in the user data entry area is 2,097,152.

Import

Accesses a dialog box in which you can select the desired file to import. An imported file automatically updates the user data entry area. The software accepts the following file types:

The maximum file size is 2,097,152 bits. If the imported file is larger than 2,097,152 bits, the software truncates the bits to conform to the maximum file size.

Export

Open a dialog box in which you can save the pattern in the user data entry area to a file. You can save the file in one of the following formats:

Clear

Deletes all data from the user data entry area.

Insert PN9

Inserts a fixed pseudo-random bit sequence containing 511 bits into the user data entry area. The software generates the pattern in accordance with CCITT recommendation O.153. Each click adds another PN9 sequence until the software attains the maximum file size of 2,097,152 bits. The software truncates data in excess of the maximum file size.

To edit the existing data pattern, place the cursor at the desired point in the file and click Insert PN9 or enter individual bits using the keyboard 1 and 0 keys. The software inserts the data at the cursor position and truncates all data in excess of 2,097,152 bits.

Generated Pattern

Sets the marker source to the beginning of the generated pattern.

Waveform Setup