Instrument Function > RF Block > RF Sweep and List Mode > List Mode > List Mode Dialog > General Settings
General Settings
State - List Mode

Activates/deactivates the List mode. The currently selected list is processed.

In case of a new or modified list, the necessary hardware settings are automatically determined on activation of the list mode. The data determined in this way is stored along with the list and is available whenever the list is used again.

This means that when activating the list mode, the system checks whether any hardware settings are present. If so, the list is started immediately, but if not they are automatically determined (the list is learnt).

A "Learn List Mode Data" button is available for deliberately activating list learning.

Note: Activating the list mode automatically deactivates all sweeps. During list mode the frequency and level indications do not display the currently set values.

Remote command: 
 
Attenuator Mode – List Mode with High Power Option

(High Power Option only)

Sets the ranges of level settings for the level sweep. The sweep is either performed in the low level (electronically switching attenuator) or in the high level (relay-switched high-power-bypass) ranges.

Note: An error message is generated and the best possible level is set if the level setting for the current sweep step is outside the selected range.

"Normal"

The level settings for the level sweep are made in the area of the electronically switching attenuator. The high level ranges are not available.

"High Power"

The level settings for the level sweep are made in the area of the option. Only the high level range is available.

Remote command: 
 
Mode - List Mode

Selects the cycle mode of the List mode.

"Auto"

Cycle from the beginning to the end of the list with automatic restart at the beginning. If a different mode was activated prior to the Auto mode, the cycle continues from the beginning of the list. The duration of a list step is determined by the set dwell time.

Button "Reset" restarts the list at the starting point.

"Single"

Single cycle from the beginning to the end of the list. If "Single" is selected, the cycle is not started immediately. The "Execute Single" button appears under the "Mode" line. The cycle is started with this button. The duration of a list step is determined by the set dwell time.

Button "Reset" restarts the list at the starting point.

"Step"

Manual, step-by-step processing of the list. Activating "Step" stops the current list and the cursor moves to the value displayed for "Current Index". It is now possible to scroll up and down in the list in discrete steps by varying the index. The duration of a list step is determined by the time between two index entries.

Button "Reset" restarts the list at the starting point.

"Extern Single"

Single cycle from the beginning to the end of the list as with "Single", but started by an external trigger.

The external trigger signal is input at the BNC connector INST TRIG.

Button "Reset" restarts the list at the starting point.

"Extern Step"

Step-by-step cycle using the external trigger signal. Each trigger event starts a single step. The duration of a list step is determined by the time between two trigger events.

The external trigger signal is input at the BNC connector INST TRIG.

Button "Reset" restarts the list at the starting point.

"Extern Hop"

Index-by-index cycle.

The processed list index is determined by the external control signals provided via the serial FHOP bus on the AUX I/O interface at the rear of the instrument (see "List Mode Extern Hop").

The external trigger signal is used. Each trigger event starts the processing of the frequency and level settings associated with selected index (trigger source as described under "Extern Single"). The duration of a list step is determined by the time between two trigger events. Note that the fhop_imm_n bit has to be disabled on the fhop_data line (=1).

"Extern Hop Direct"

Index-by-index cycle. The processed list index is determined by the external control signals provided via the serial FHOP bus.

Processing of the frequency and level settings associated with selected index is automatically started at the end of data transmission. Note that the fhop_imm_n bit has to be enabled on the fhop_data line (= 0).

Remote command: 
 
Execute Single - List Mode

Triggers the list manually. This button is available only if mode "Single" is selected.

Remote command: 
 
Reset - List Mode

Resets the list to the starting point.

Remote command: 
 
Dwell Time - List Mode

Enters the dwell time. The dwell time determines the duration of a list step in list operating modes "Auto", "Single" and "Extern Single". In these modes a complete list is processed either once or continuously.

In list operating modes "Step" and "Extern Step", the set dwell time does not affect signal generation. In this case, the duration of a list step is determined by the time between two (internal or external) trigger events.

The "Dwell Time" set by the user is used as the step time of the list mode. The effective net dwell time is shorter, reduced by the setting time. This setting time may be greater than the time specified in the data sheet.

Remote command: 
 
Current Index - List Mode

Sets the list index in "Step" mode.

Remote command: 
 
Learn List Mode Data... - List Mode

Starts the determination of the hardware setting for the selected list. The data determined in this way is stored along with the list.

It may be necessary to deliberately activate list learning in the event of greatly altered environmental conditions that require new hardware settings.

If this is not done, a previously learned hardware setting will continue to be used when list mode is switched on ("State = On"). If no setting is available, e.g. when the list is used for the first time, learning is automatically activated.

Remote command: 
 
List Mode Data... - List Mode

Calls the "File Select" menu for selecting and creating a list or the "File Manager".

Remote command: 
 
Edit List Mode Data... - List Mode

Calls the editor for editing the selected list. A list consists of any number of frequency/level value pairs. The currently selected list is displayed.

"Frequency /Hz"

Enter the frequency of the frequency/power value pair.

Remote command: 

 

"Power /dBm"

Enter the level of the frequency/power value pair.

Remote command: 

 

"Goto"

Selects row for editing.

If "Goto row" is selected, a window opens for entering the requested row.

"Edit"

Calls a selection of possible actions described below.

"Insert Row"

Inserts a new row before the marked row.

"Insert Range"

Inserts new rows before the marked row. The number of rows to be inserted can be defined in an entry window.

"Fill...."

Opens a sub menu for defining a set of list values to be automatically entered in the List Mode table (see "Filling the List Mode Data automatically").

"Delete Row"

Deletes the marked row.

"Delete Range..."

Allows to delete any number of rows starting with the marked row. The number of rows to be deleted can be defined in an entry window.

"Save as"

Open the file menu to save the list under a new name.

Each list is saved to the R&S SMA CompactFlash™ Card as a separate file with the file prefix *.lsw. The file name and the directory to which the file is saved are user-selectable.

"Save"

The list is saved under its current name.

List Range In - List Mode

Defines an index range in the current list by setting the start and stop index. Only the values in the selected index range are processed in List mode, all other list entries are ignored.

Remote command: 
 
Ext. Trigger Input Slope

Sets the polarity of the active slope of an externally applied instrument trigger.

This setting affects the INST TRIG input (BNC connector at the rear of the instrument).

"Positive"

activates the rising edge of the trigger signal.

"Negative"

activates the falling edge of the trigger signal.

Remote command: 
 

 


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