Rf Analyzer Section - Agilent Technologies E8285A Manual

RF Analyzer Section

Frequency Conversion
NOTE Test Sets with firmware revision A.04.5X and above operate only at RF
frequencies from 800 to 1000 MHz and 1700 to 2000 MHz. A text only error
message "Input value out of range" , will be displayed if invalid
frequencies are set.
The Downconverter, see
114.3, 385.7 or 614.3 MHz. The LO is provided by the Receiver
Synthesizer, see
are as follows in
Table 8-2 Downconverter Signal Paths
Tune
Frequency RF Filter
(MHz)
.4 to <150 150 MHz LPF
150 to 150-386 MHz
<380.7 BPF
380.7 to 350-650 MHz
<650 TBPF
650 to <800 600-1000 MHz
TBPF
800 to 1000 600-1000 MHz
TBPF
1400 to 1400-2200 MHz
<1614.3 TBPF
1614.3 to 1400-2200 MHz
2000 TBPF
>2000 to 1400-2200 MHz
2200 TBPF
a. This LO input is doubled to 1785.7-2000 MHz prior to mixing.
b. This LO input is doubled to 1228.6-1614.3 MHz prior to mixing.
c. This LO input is doubled to 1614.3-1814.3 MHz prior to mixing.
Figure 8-3 on page
Figure 8-4 on page
Table 8-2.
IF
Conversion
Frequency
Module
(MHz)
614.3 high-side LO
614.3 high-side LO
114.3 high-side LO
114.3 high-side LO
114.3 low-side LO
385.7 high-side LO
385.7 low-side LO
385.7 low-side LO
RF Analyzer Section
257, produces an IF of
258. The IF frequencies developed
LO Filter
(LO freq
range)
NA
NA
NA
NA
NA
PDC/Unlic_PCS
(1600-2000
MHz)
PCS
(1200-1620
MHz)
PDC/Unlic_PCS
(1600-2000
MHz)
Block Diagrams
RSYN_500_
1000M Range
(MHz)
614.7-764.3
764.3-995.0
945.0-764.3
764.3-914.3
685.7-885.7
a
892.85-1000.0
b
614.3-807.15
c
807.15-907.15
255