Service manual

5-12 8510XF Network Analyzer Systems
System Maintenance
Theory of Operation
Table 5-2 and Table 5-3 below show how the ranges are subdivided for
110 GHz systems versus 85 GHz systems. Under “Harmonic of RF”, a “2” is
listed where the RF source frequency is doubled; a “3” is listed where it is
tripled. Various harmonics of the LO source frequency are used in different
portions of the system’s frequency range.
Table 5-2 8510XF Frequency Bands (Systems to 110 GHz)
Test Frequency (GHz) Harmonic of RF Harmonic of LO Mixers Used
.045 to <2
(Option 005)
1 1 <2 GHz mixers, in the millimeter-wave
controller
2 to 18 1 1 2 to 50 GHz mixers, in the microwave
subassembly of the test head
>18 to 50 1 3 2 to 50 GHz mixers, in the microwave
subassembly of the test head
>50 to 64.2 2 12 V-band mixers, in the millimeter-wave
subassembly of the test head
>64.2 to 75 2 14 V-band mixers, in the millimeter-wave
subassembly of the test head
>75 to 85.5 3 14 W-band mixers, in the millimeter-wave
subassembly of the test head
>85.5 to 97.7 3 16 W-band mixers, in the millimeter-wave
subassembly of the test head
>97.7 to 110 3 18 W-band mixers, in the millimeter-wave
subassembly of the test head
Table 5-3 8510XF Frequency Bands (Systems to 85 GHz)
Test Frequency (GHz) Harmonic of RF Harmonic of LO Mixers Used
.045 to < 2
(Option 005)
1 1 <2 GHz mixers, in millimeter-wave
controller
2 to 18 1 1 2 to 50 GHz mixers, in the microwave
subassembly of the test head
>18 to 50 1 3 2 to 50 GHz mixers, in the microwave
subassembly of the test head
>50 to 64.2 2 12 V-band mixers, in the millimeter-wave
subassembly of the test head
>64.2 to 85 2 14 V-band mixers, in the millimeter-wave
subassembly of the test head