HP 33120A - FSK Source

FSK Rate
The FSK rate is the rate at which the output frequency “shifts” between
the carrier frequency and the hop frequency when you select the
internal
FSK source.
• FSK rate (internal source): 10 mHz to 50 kHz. The default is 10 Hz.
• The
FSK rate is ignored when the external source is selected.
• Front-Panel Operation:
9: FSK RATE (MOD MENU)
• Remote Interface Operation:
FSKey:INTernal:RATE {<
rate in Hz>|MINimum|MAXimum}
FSK Source
• FSK source: Internal or External. The default is Internal.
• When the internal source is selected, the rate at which the output
frequency “shifts” between the carrier frequency and hop frequency
is determined by the FSK rate specified.
• When the external source is selected, the output frequency is
determined by the signal level on the rear-panel FSK terminal.
When a “low”
TTL level is present, the carrier frequency is output.
When a “high”
TTL level is present, the hop frequency is output.
• The maximum external
FSK rate is 1 MHz.
• The
Ext annunciator turns on when the function generator is waiting
for an external trigger signal.
• Front-Panel Operation:
10: FSK SRC (MOD MENU)
• Remote Interface Operation:
FSKey:SOURce {INTernal|EXTernal}
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Chapter 3 Features and Functions
Frequency-Shift Keying (FSK) Modulation
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