Oscillator Menu - Ametek 7280 Instruction Manual

Chapter 5, FRONT PANEL OPERATION

5.3.09 Oscillator Menu

5-16
The select keys are used to highlight the required variable, and then the adjust
keys are used to change it.
The values C1 and C2 within each equation are user-defined integer constants and are
adjusted using the two corresponding
keypad, by pressing SET CONSTANT followed by the required value on the keypad,
or by using the Active Cursor.
The calculation is performed using 64-bit integers to maintain full accuracy through
to the 32-bit result that is displayed immediately below the equation and is constantly
updated. Care must be taken in defining the equations so as to make the best use of
the available output range.
If the equation outputs are set to appear at the CH1 or CH2 connectors on the rear
panel using the Configuration menu, then the output range should be adjusted to lie
in the range -10000 to +10000. Values outside this range will result in these analog
outputs limiting at ±10.000 V, although the digital value will still appear correctly on
the screen and can be read via the computer interfaces.
Note that the equations continue to be calculated even when the Output Equations
menu is not displayed, if they are selected for output to the CH1 or CH2 connectors.
Otherwise they are calculated when requested by computer command.
Pressing the Previous Menu key returns control to Main Menu 1.
When Main Menu 1 is displayed, pressing a key adjacent to the Oscillator item
accesses the Oscillator menu, which is shown in figure 5-11.
The Oscillator menu has two controls affecting the instrument's internal oscillator,
and is also used for accessing two sub-menus which control oscillator frequency and
amplitude sweeps. The relationship of these menus to Main Menu 1 is shown in
keys. They may also be set using the
Figure 5-11, Oscillator Menu