Giga-tronics 2508A, Operation Manual

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2500A Menus
2500A Series Operation Manual, 34172 Revision C, March 2008
Save. This menu item allows you to save the current state of the instrument to non-volatile memory, so
that the saved state can subsequently be restored. The 2500A contains ten registers, numbered 0 through
9, into which instrument states can be saved. Note that saving an instrument state to a given register over-
writes any state that might have previously been stored in that register.
To save the current instrument configuration to a given register, select the Save menu item, enter the
number of the register into which you wish to save the configuration using the numeric keypad, then
press any units button.
Only the numeric keypad can be used to enter a register number; the step up/step down buttons and
rotary knob cannot be used.
Recall. This menu item allows you to recall a previously saved instrument state from any of the ten stor-
age registers contained in the instrument’s non-volatile memory.
The parameter area in the display shows the following text:
From Register ( X )
Where X is the list of registers, separated by commas, that currently have an instrument state saved in
them. For example, if instrument states are currently stored in registers 1, 2, and 5, the parameter area
would read as follows:
From Register (1, 2, 5)
If none of the registers have instrument states saved to them, as would be the case after the instrument’s
memory is cleared, the following is displayed in the parameter area:
No register has been saved
To recall a previously saved instrument configuration, press the Recall softkey, enter the number of the
register from which you wish to recall the configuration using the numeric keypad, then press any units
button.
Only the numeric keypad can be used to enter a register number; the step up/step down buttons and
rotary knob cannot be used.
Contrast. This menu item allows you to set the contrast of the instrument’s front panel display. The con-
trast range is 1 to 15, where 1 represents most contrast and results in the darkest display, and 15 repre-
sents least contrast and results in the lightest display.
Sound. This menu item allows you to enable or disable (mute) the system sound.
The available selections are ON and MUTE. When Sound is set to ON, the instrument provides audio
feedback whenever a button is pressed or the knob is rotated, and an operational error notification is
emitted when an error condition occurs, such as when an improper button sequence is pressed, a parame-
ter limit is exceeded, etc.
Attenuation. This menu item provides control of the step attenuator if it is installed in the instrument.