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Table 57 Operating characteristics for 8643A modes 1, 2, and 3
Characteristic
RF Frequency Switching Time
FM Deviation at 1 GHz
Phase Noise (20 kHz offset at 1 GHz)
How to access special functions
Press the Special key and enter the special function number of your choice.
Access the special function key by pressing the Enter key. Press the [ON]
(ENTER) key to terminate data entries that do not require specific units (kHz,
mV, rad, for example)
Example:
[Special], [1], [2], [0], [ON] (Enter).
e5505a_8643A
rev1 24 jun 04
Figure 299 8643A special function keys
Description of special functions 120 and 125
120: FM synthesis
This special function allows you to have the instrument synthesize the FM
signal in a digitized or linear manner. Digitized FM is best for signal-tone
modulation and provides very accurate center frequency at low deviation
rates. Linear FM is best for multi-tone modulation and provides a more
constant group delay than the Digitized FM.
Agilent E5505A User's Guide
Reference Graphs and Tables
Synthesis Mode
Mode 1
Mode 2
90 ms
200 ms
10 MHz
1 MHz
–120 dBc
–130 dBc
16
373
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