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.
For an externally-controlled FSK waveform, the carrier frequency is
output when a “low”
TTL level is applied to the FSK terminal. The hop
frequency is output when a “high”
TTL level is applied.
For FSK, the sync signal is referenced to the FSK “hop” signal (not the
carrier). A momentary
TTL “high” pulse (> 200 ns) is output on the
transition to the “hop” frequency. The signal is output from the front-
panel SYNC terminal.
Front-Panel Operation: Press the Freq key and select any valid
frequency for the selected function (the present amplitude and offset
voltage are used).
Remote Interface Operation:
FREQuency {<
frequency>|MINimum|MAXimum}
You can also use the APPLy command to select the function, frequency,
amplitude, and offset of the carrier with a single command.
Number of Arb Points
8 to 8,192 (8k)
8,193 to 12,287 (12k)
12,288 to 16,000
Minimum Frequency
10 mHz
10 mHz
10 mHz
Maximum Frequency
5 MHz
2.5 MHz
200 kHz
3
Chapter 3 Features and Functions
Frequency-Shift Keying (FSK) Modulation
91
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