Agilent Technologies E1420B, User Manual

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194 Agilent E5505A User’s Guide
6
Absolute Measurement Examples
Checking the beatnote
While the connect diagram is still displayed, Agilent recommends that you use
an oscilloscope (connected to the Monitor port on the test set) or a counter to
check the beatnote being created between the reference source and your DUT.
The objective of checking the beatnote is to ensure that the center frequencies
of the two sources are close enough in frequency to create a beatnote that is
within the capture range of the system.
The phase lock loop (PLL) capture range is 5% of the peak tuning range of the
VCO source you are using. (The peak tuning range for your VCO can be
estimated by multiplying the VCO tuning constant by the tune range of VCO.
Table 27 Test set signal input limits and characteristics
Limits
Frequency
•
50 kHz to 1.6 GHz (Std)
•
50 kHz to 26.5 GHz (Option 001)
•
50 kHz to 26.5 GHz (Option 201)
Maximum Signal Input Power Sum of the reference and signal input power shall not
23 dBm
At Attenuator Output, Operating Level
Range:
•
RF Phase Detectors 0 to +23 dBm (Signal Input)
+15 to +23 dBm (Reference Input)
•
Microwave Phase Detectors 0 to +5 dBm (Signal Input)
+7 to +10 dBm (Reference Input)
•
Internal AM Detector 0 to +20 dBm
Downconverters:
•
Agilent N5502A/70422A 0 to +30 dBm
•
Agilent N5507A/70427A +5 to +15 dBm
Characteristics
Input Impedance 50
Ω
Nominal
AM Noise DC coupled to 50
Ω
load
NO T E
Refer to the following system connect diagram examples in Chapter 18 , “System
Interconnections,” for more information about system interconnections.
•
Figure 307 , “E5505A system connections with standard test set,” on page 401
•
Figure 308 , “E5505A system connections with test set option 001,” on page 402
•
Figure 309 , “E5505A system connections with test set option 201,” on page 403