Oscillator Menu - Ametek 7124 Instruction Manual

Chapter 5, FRONT PANEL OPERATION

5.3.09 Oscillator Menu

5-16
where the operator "±" may be set to either addition or subtraction, and the variables
A, B, C and D can be chosen from the following list:-
Variable
X
Y
MAG
PHA (Phase)
ADC1
ADC2
ADC3
ADC4
C1
C2
0
1
FRQ (Reference Frequency)
OSCF(Oscillator Frequency)
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
the 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 any of the analog output 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 analog output 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 5-12.
Range
±30000
±30000
0 to +30000
±18000
±10000
±10000
±10000
±10000
0 to 100000
0 to 100000
Zero
Unity
0 to 150000000 (Only available in position C)
0 to 150000000 (Only available in position C)
keys. They may also be set using