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Chapter 3 Features and Functions
Frequency-Shift Keying (FSK) Modulation
FSK Carrier Frequency
• Carrier frequency: 10 mHz to 15 MHz (100 kHz for triangle
and ramp). The default is 1 kHz. You can use sine, square, ramp,
triangle, or arbitrary waveforms for the carrier waveform.
• For arbitrary waveforms, the maximum carrier frequency depends on
the number of points specified in the waveform. The five built-in
arbitrary waveforms can be output at a maximum of 5 MHz.
Number of Arb Points
8 to 8,192 (8k)
8,193 to 12,287 (12k)
12,288 to 16,000
• For an externally-controlled
output when a "low"
TTL
frequency is output when a "high"
• For
, the sync signal is referenced to the
FSK
carrier). A momentary
transition to the "hop" frequency. The signal is output from the front-
panel SYNC terminal.
• Front-Panel Operation: Press the
frequency for the selected function (the present amplitude and offset
voltage are used).
• Remote Interface Operation:
FREQuency {<
frequency
You can also use the APPLy command to select the function, frequency,
amplitude, and offset of the carrier with a single command.
Minimum Frequency
Maximum Frequency
10 mHz
10 mHz
10 mHz
waveform, the carrier frequency is
FSK
level is applied to the FSK terminal. The hop
level is applied.
TTL
FSK
"high" pulse (> 200 ns) is output on the
TTL
key and select any valid
Freq
>|MINimum|MAXimum}
5 MHz
2.5 MHz
200 kHz
"hop" signal (not the
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