Example 4: Offset Causes Invalid Source Setting - Agilent Technologies PSA Series User Manual

Hints and Tips
FAQs and Helpful Hints and Tips
• Sweep Points = 101
• Offset = OFF
• Harmonic = OFF
This will cause the "Frequency band crossing not supported" error.
Reason:
The PSA band 0 stops at 3.05 GHz, and band 1 starts at 2.85 GHz. So
you must change your measurement to be completely in one of these
two bands. You can change:
• PSA start frequency > 2.85 GHz
or
• PSA stop frequency <3.05 GHz
Table 5-1 Frequency Bands in the PSA Series analyzers
Band
Number
0
1
2
3
4
5
6

Example 4: Offset Causes Invalid Source Setting

Using any PSA and any source:
PSA settings:
• Start Freq = 2.5 GHz
• Stop Freq = 3.0 GHz
• Sweep Points = 101
• Offset = − 2.8 GHz, On
• Harmonic = OFF
This will cause the "Freq range of ext src exceeded" error.
Reason:
The signal source cannot sweep from a negative frequency, but by
specifying a Start Frequency of 2.5 GHz and Offset of − 2.8 GHz, you are
70
Frequency Range
3.0 Hz - 3.05 GHz
2.85 GHz - 6.6 GHz
6.2 GHz - 13.2 GHz
12.8 GHz - 19.2 GHz
18.7 GHz - 26.8 GHz
26.4 GHz - 31.15 GHz
31.0 GHz - 50.0 GHz
Overlap
with Next
Band
200 MHz
400 MHz
400 MHz
500 MHz
400 MHz
150 MHz
N/A
Chapter 5