Agilent Technologies 8590 Series Service Manual page 366

Assembly Descriptions and Block Diagrams
RF and LO Section for 8592L, 8593E, 8594E, 8594L, 8594Q, 8595E, and 8596E Analyzers
Band
9 kHz to 2.9 GHz
0
2.75 to 6.5 GHz
1
6.0 to 12.8 GHz
2
12.4 to 19.4 GHz
3
19.1 to 22
4
(except Option 026 and 027)
19.1 to 26.5
5
Band 0 (low band) uses triple conversion to produce the final 21.4 MHz
IF. The A3A6 dual band mixer up-converts the RF input to a
3.9214 GHz first IF. The A3A4 second converter down-converts the
3.9214 GHz first IF to a 321.4 MHz second IF. The A9 third converter
down-converts the second IF to the final 21.4 MHz IF.
Bands 1 through 4 (high bands) use double conversion. The A3A6
dual-band mixer down-converts the RF input to a 321.4 MHz first IF.
Although this first IF passes through the A3A4 second converter, it
bypasses the second mixer. The second and final conversion occurs in
the A9 third converter where the first IF is down-converted to produce
the final 21.4 MHz IF.
LO Section for the 8593E, 8594E, 8594L, 8594Q,
8595E, and 8596E Analyzers
The LO Section includes the following assemblies:
• A3A7 YTO (YIG-Tuned Oscillator)
• A3A10 directional coupler
• A3A13 isolator
• A7 analog interface
• A9 third converter
• A22 precision frequency reference
• A25 counterlock (not available for the 8592L)
• AT1 10 dB pad
Refer to Figure 9-5 at the end of this chapter for details about the
operation of the LO section.
366
Frequency
Range
8592L, 93E, 94E, 94L, 94Q,
95E, 96E
8592L, 93E, 95E, 96E
8592L, 93E, 96E
8592L, 93E
8592L, 93E
8592L, 93E
(Option 026 and 027)
Analyzer
Model
Chapter 9