Frequency Sweep Menu - Ametek 7270 Instruction Manual

Chapter 5, FRONT PANEL OPERATION

5.3.10 Frequency Sweep Menu

5-18
Changes to the setting of the controls on the Oscillator menu can be made by using
the adjacent keys.
OSC FREQUENCY
This control, which duplicates the Main Display OSC FREQUENCY control, allows the
instrument's internal oscillator frequency to be set to any value between 0.001 Hz
and 250.000 kHz with a 1 mHz resolution. Adjustment is faster using the Keypad or
Active Cursor controls - see section 4.1.04.
OSC AMPLITUDE
This control, which duplicates the Main Display OSC AMPLITUDE control, sets the
amplitude of the signal at the OSC OUT connector to any value between 1 µV and
5 V rms in 1 µV increments. Adjustment is faster using the Keypad or Active Cursor
controls - see section 4.1.04.
SYNC OSCILLATOR
This control which is only active when external reference mode is active, allows the
signal at the OSC OUT connector to be derived from the drive to the X-channel
demodulator. It has two settings:
OFF
The oscillator is independent of the external reference frequency.
ON
The oscillator is a sine wave at the same frequency as the applied reference
signal but subject to any phase shift set by the phase control.
The Oscillator menu is also used to access four sub-menus, as follows:-
When the Oscillator menu is displayed, pressing a key adjacent to the Setup
frequency sweep item accesses the Frequency Sweep menu, which is shown in figure
5-14.
Figure 5-13, Oscillator Menu Structure