Keysight 81150A - FSK Hop Frequency

Features and Functions
81150A and 81160A User’s Guide 211
3.10.4 FSK “Hop” Frequency
Introduction
The maximum alternate (or “hop”) frequency depends on the function
selected as shown below. The default is 100 Hz for all functions.
Function
Minimum Frequency
Maximum Frequency
Sine
1 Hz
81150A: 240 MHz
81160A: 500 MHz
Square
1 Hz
81150A: 120 MHz
81160A: 330 MHz
Ramp
1 Hz
81150A: 5 MHz
81160A: 20 MHz
Arbs
1 Hz
81150A: 120 MHz
81160A: 330 MHz
FSK “Hop”
Frequency
Characteristics
 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.
Front-Panel
Operation
To set the “hop” frequency, do the following:
 Press and then press the Modulation Type softkey to select
FSK.
 Press the Hop Frequency softkey. Then use the knob or numeric
keypad to enter the desired frequency.