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MAIN
BIAS
Modulator
Control
Switch
Control
>+17 dBm
500 MHz
Down Converter Assy.
D27330
8.4-20 GHz
2-8.4 GHz
>+4dBm
0.01 - 40 GHz
110 dB
Step
Attenuator
(Option)
Directional
Coupler
Control
3.3 GHz LPF
5.5 GHz LPF
8.4 GHz LPF
13.5 GHz LPF
Level
Control
6.51 - 8.5 GHz
J5
J2
J3
LPF
6.5 GHz
J3
J1
Sampler
(-20 dBm
to
-27dBm)
J6
J2
Level
Control
RF Output
J1
2-20 GHz
YIG Oscillator
Switch
Control
Bias
20 - 40 GHz
>+8.5 dBm
Switched Filter Assy. - D25015 (Standard)
- D26350 (Option 15B)
0.01 - 2 GHz
>+16 dBm
8.5 GHz LPF
J2
RF Path for 20 GHz Models
20 - 25 GHz BPF
25 - 32 GHz BPF
32 - 40 GHz BPF
x2
>+15 dBm (Std.)
20 GHz LPF
>+20 dBm (Opt. 15B)
Switched Doubler Module - D28535
(40 GHz Models)
J1
Switch
Control
Bias
20 - 26.5 GHz
>+8.5 dBm
J2
20 - 26.5 GHz BPF
x2
Switched Doubler Module - ND40843
(26.5 GHz Models)
J1
Modulator
Pulse
J7
NOTES
1. Down Converter Assy not installed in Models
68237B/68337B, 68253B/68353B, and 68263B/68363B.
2. Switched Doubler Module not installed in Models
68237B/68337B and 68247B/68347B.
FUNCTIONAL RF DECK
DESCRIPTION ASSEMBLIES
682XXB/683XXB MM 2-21
Figure 2-4. Block Diagram of the RF Deck Assembly for all
£40 GHz Models (except 682X5B/683X5B Models)