ESG Family Signal Generators Hardkey and Softkey Reference
Phase Modulation
User’s Guide 4-73
Φ
M Tone 1 Rate
Press this softkey to set the internal modulation frequency for the
Φ
M
tone 1. Enter the desired rate using the up and down arrow keys, the
front panel knob, or enter a value using the numeric keypad and press
the
kHz or Hz terminator softkey. The range of values allowed is 0.1 Hz
through 50 kHz. The minimum increment allowed is 0.1 Hz.
This softkey is coupled to the
ΦMRate softkey in the initial
Φ
M Menu
and the
ΦMStartRate softkey in the
Φ
M Swept-Sine Menu. Any value set
for
ΦM Tone 1 Rate is reflected in the ΦMRate and ΦM Start Rate softkeys.
Conversely, if you change the value for either the
ΦM Rate softkey or the
ΦM Start Rate softkey, the value for ΦM Tone 1 Rate is changed to match.
Default Value: 400.0 Hz
Softkey Location:
FM/ΦM hardkey > FM ΦM softkey ΦM > ΦM Waveform >
Dual-Sine > ΦMTone1Rate
Φ
M Tone 2 Ampl Percent Of Peak
Press this softkey to set the amplitude of the alternate frequency/rate
as a percent of the peak LF analog modulation amplitude. The primary
frequency/rate will make up the remaining amplitude. This softkey is
for use with dual-sine modulation only.
For example, if the Tone 2 amplitude is 0%, then there would be no
amplitude for Tone 2; all of the signal strength would be present in Tone
1. If
ΦM Tone 2 Ampl Percent Of Peak is set to 50%, then Tone 2 and Tone 1
would have equal amplitudes, or half of the amplitude of both tones
combined.
Default Value: 50.0%
Softkey Location:
FM/ΦM hardkey > FM ΦM softkey ΦM > ΦM Waveform >
Dual-Sine > ΦM Tone 2 Ampl Percent Of Peak
ΦM Tone 2 Rate
Press this softkey to set the internal modulation frequency for the ΦM
tone 2. Enter the desired rate using the up and down arrow keys, the
front panel knob, or enter a value using the numeric keypad and press
the
kHz or Hz terminator softkey. The range of values allowed is 0.1 Hz
through 50 kHz. The minimum increment allowed is 0.1 Hz.
This softkey is coupled to the
ΦM Stop Rate softkey in the ΦM Swept-Sine
Menu. Any value set for
ΦM Tone 2 Rate is reflected in the ΦM Stop Rate
softkey. Conversely, if you change the value for the
ΦM Stop Rate softkey,
the value for
ΦM Tone 2 Rate is changed to match.
Default Value: 400.0 Hz
Softkey Location:
FM/ΦM hardkey > FM ΦM softkey ΦM > ΦM Waveform >
Dual-Sine > ΦMTone2Rate
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