Key Reference
Symbols
Chapter 5 95
ΦM Source
Supported
PSG-A Series
Use this softkey to access a menu of choices that enables you to select either an
internally generated or an externally applied modulation input for the phase modulation
source. The internal modulation is always ac-coupled. For externally applied signals, you
can choose between ac- and dc-coupled modulation.
ΦM Start Rate
Supported
PSG-A Series
This softkey enables you to change the starting frequency of the internally generated
modulation source for swept-sine phase modulation.
Preset 400.0 Hz
Range 0.5 Hz
−
1 MHz (minimum increment allowed is 0.5 Hz)
Location Page 238
Remarks This softkey is coupled to the
ΦM Rate softkey in the initial AM menu
and the
ΦM Tone 1 Rate softkey in the
Φ
M Dual-Sine menu. Any value
set for
Φ
M Start Rate is reflected in the
ΦM Rate and ΦM Tone 1 Rate
softkeys.
Preset Internal 1
Choices Internal 1 Internal 2 Ext1 Ext2
Location Page 237
Remarks A 1.0 volt peak voltage input is required for calibrated
Φ
M deviation
settings. The EXT 1 LO/HI and EXT 2 LO/HI display annunciators will
turn on if the peak input voltage differs from 1.0 by more than 3%.
(The LO/HI annunciators function only for ac-coupled external inputs.)
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