Frequency Sweep Menu - Ametek 7124 Instruction Manual

Precision lock-in amplifier
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Chapter 5, FRONT PANEL OPERATION

5.3.10 Frequency Sweep Menu

5-18
OSC AMPLITUDE
This control, which duplicates the Main Display OSC AMPLITUDE control, sets the
amplitude of the signal at the 7124 main console OSC OUT connector to any value
between 1 mV and 5 V rms in 1 mV increments. Adjustment is faster using the
Keypad or Active Cursor controls - see section 4.1.04.
RCU OSC AMPLITUDE
This control, which duplicates the Main Display RCU OSC AMPLITUDE control, sets
the amplitude of the signal at the 7124 RCU OSC OUT connector to any value
between 1 mV and 5 V rms in 1 mV increments. Adjustment is faster using the
Keypad or Active Cursor controls - see section 4.1.04.
RCU OSCILLATOR
This control selects whether the calibrated internal oscillator output signal will
appear at the 7124 main console or the 7124 RCU OSC OUT connector. it has two
settings, as follows:
OFF
The 7124 main console OSC OUT connector is active.
ON
The 7124 RCU OSC OUT connector is active.
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.

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