Saving and Recalling Instrument State

• Overview

• Saving Data

• Recalling Data

• Priority of Recalling Configuration File at Startup

Other topics about Data Output

Overview

You can save the instrument state of the E4990A into a file on mass storage and then recall it later to reproduce that state. You can select the stored data from the following four types.

In addition, the user-preset function is provided to allow the user to freely set up an instrument state recalled when the preset function is executed.

Saving Data

Selecting Content to be Saved

• This setting takes effect both, when saving the entire instrument state into a file and when saving the instrument state for each channel into memory.

1. Press Save/Recall > Save Type.

2. Click the softkey corresponding to the content of the instrument state you want to save.

Selecting Save Target Channel/Trace

1. Press Save/Recall key.

2. Click Channel/Trace and select the save target from all channels/traces (All) or displayed channel/traces only (Disp Only).

If you specify the displayed channel/traces only as the save target, you can reduce the file size. However, for channels/traces that are not displayed, you cannot recall and reproduce the instrument state separately held for each channel/trace at a later time.

Saving Instrument State

Follow the procedure below to save internal data from the E4990A.

1. Press Save/Recall > Save State.

2. Click the softkey corresponding to the destination you want to save.

• If D:\Autorec.sta is found on the system at startup, the E4990A is automatically configured using the saved settings. When the external floppy disk drive is connected as A: drive, then if A:\Autorec.sta is found at startup, the E4990A is also automatically configured using the saved settings. If both files are found, A:\Autorec.sta is recalled. To disable the auto recall function, delete the Autorec.sta files.

• An asterisk (*) in the upper right of the softkey indicates that the corresponding file of the softkey already exists. If you save into the existing file, the existing file is copied as backup.sta and then overwritten.

Recalling Data

Recalling the Saved State

Follow the procedure below to recall internal data from the E4990A.

• If you recall a file that includes traces (its content was set to State &Trace or All when it was saved), the trigger source is automatically set to Manual.

1. Press Save/Recall > Recall State.

When you want to recall State01.sta - State08.sta, Autorec.sta

1. Press State01 - State08 or Autorec.

When you want to recall other files

1. Press File Dialog... to open the Open dialog box.

2. Select the folder and the file using the external keyboard and mouse.

3. Click Open.

The warning messages may appear when recall fails:

• Pressing Save/Recall > Explorer executes Windows Explorer. This helps you to browse the files in the SSD of the E4990A.

Recall Procedure using " Recall by File Name"

You can use the recall feature with the Recall by File Name softkey for files you have named freely and save in the D:\State folder. This function lets you recall a file you have named freely and save by simple softkey operation, eliminating annoying operation using the Open dialog box.

• Although there is no limit to the number of files saved in a folder, only up to 50 files are displayed on the softkeys. If more than 50 files are saved in a folder, they are sorted in the order of numbers 0 to 9 and alphabetic characters A to Z and the first 50 files are displayed as softkeys.
  
  Although there is no limit to the number of characters of a file name, only up to 16 characters are displayed on the softkey. If a file name exceeds 16 characters, the first 12 characters are displayed on the softkey and the remaining characters are omitted and replaced with "...".

• Different files may be displayed on softkeys with the same name or a saved file is not displayed on any softkey because of the above limitations.

1. Press Save/Recall > Recall by File Name.

2. Files that have been named and saved in the D:\State folder are displayed on softkeys. Press the key for the file you want to recall.

Priority of Recalling Configuration File at Startup

If several instrument configuration files exist at the startup of the E4990A, only one file is recalled and set at a time in the following order of priority.

If these files do not exist, the normal preset (factory preset) is executed.