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3.10.4
Introduction
FSK "Hop"
Frequency
Characteristics
Front-Panel
Operation
81150A and 81160A User's Guide
FSK "Hop" Frequency
The maximum alternate (or "hop") frequency depends on the function
selected as shown below. The default is 100 Hz for all functions.
Function
Sine
Square
Ramp
Arbs
The internal modulating waveform is a square wave with a 50% duty
cycle.
When the External source is selected, the output frequency is
determined by the signal level on the Modulation In connector. When
a logic low level is present, the carrier frequency is output. When a
logic high level is present, the hop frequency is output.
When "other" channel is selected as a modulation source, then a
DAC value below 0 will output the carrier frequency, a DAC value 0
will output the hop frequency.
To set the "hop" frequency, do the following:
Press
FSK.
Press the Hop Frequency softkey. Then use the knob or numeric
keypad to enter the desired frequency.
Minimum Frequency
1
Hz
1
Hz
1
Hz
1
Hz
and then press the Modulation Type softkey to select
Features and Functions
Maximum Frequency
81150A: 240 MHz
81160A: 500 MHz
81150A: 120 MHz
81160A: 330 MHz
81150A: 5 MHz
81160A: 20 MHz
81150A: 120 MHz
81160A: 330 MHz
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