Fsk "Hop" Frequency - HP 33120A User Manual

Chapter 3 Features and Functions
Frequency-Shift Keying (FSK) Modulation

FSK "Hop" Frequency

• Hop frequency: 10 mHz to 15 MHz (100 kHz for triangle and ramp).
The default is 100 Hz. You can use sine, square, ramp, triangle, or
arbitrary waveforms for the hop frequency waveshape.
• For arbitrary waveforms, the maximum hop 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: After enabling
directly to the
FSK FREQ
8: FSK FREQ (MOD MENU)
• Remote Interface Operation:
FSKey:FREQuency {<
92
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
, press Recall Menu to go
FSK
command in the menu.
frequency >|MINimum|MAXimum}
5 MHz
2.5 MHz
200 kHz
"hop" signal (not the