Stanford Research Systems DS360 Operating Manual And Programming Reference page 27

change causes the currently displayed modify function to become invalid, the display
will revert to the frequency [FREQ] display.
Shift Key
The [SHIFT] key is used to select functions printed above the keys. Press the [SHIFT]
followed by the [function] key to select the desired function. When the shift key is
pressed, the shift LED will light. This indicates that the keypad is in "shifted" mode.
Pressing [SHIFT] a second time will deactivate shift mode. Note that in the manual,
whenever [SHIFT] is indicated, the desired function is printed above the key, not on
the key itself.
Numeric Keys
The numeric keypad allows for direct entry of the DS360's parameters. To change a
parameter value, type the new value, followed by one of the [units] keys. A typing error
may be corrected by pressing the [CLR] key, which recalls the old value. The [+/-] key
may be selected at any time during numeric entry.
Units Keys
The units are used to terminate numeric entries. Press the key with the desired units to
enter the typed value. Some parameters have no particular units and any of the units keys
may be used. When the amplitude is displayed, pressing one of the units keys will cause
the display to change the units to the type pressed. This means that the amplitude display
can changed from Vpp, Vrms, dBm and dBV without entering a new value.
Cursor Keys
The [>] cursor right and [<] cursor left keys move the flashing digit to the right and left
of the display. They also switch between parameters which have a list of choices.
Rel Key
The [REL] key changes the amplitude display to the relative display mode. The
amplitude is displayed in dB relative to the value when [REL] was pressed. Pressing
[REL] a second time changes the amplitude display back to normal. Pressing
[SHIFT][REL] shows the Vpp amplitude that the display is rel'd to.
DS360 Ultra Low Distortion Function Generator
Basics 2-7