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Rohde & Schwarz 890 Series - Control Unit (R&S EK 896), Block Diagram

Rohde & Schwarz 890 Series
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V L F > H F R E C E I V E R S
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R & S E K 8 9 5 / R & S E K 8 9 6
User Manual
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Control Unit
WW
IRQF
Key Matrix
Tuning Knob
LCD
Driver
LCD
Driver
LCD
Driver
LCD
Driver
LCD
4 MHz
Key Decoder
Buffer
(A)
BFO, PBT, FRQ, CH
+5 V
SHIFT
*)
8>out>of>3 Converter
Data Bus
15 V / AF
0 V / AF
AF
HF
AF OUT
S1
S2
Buffer
(B)
+5 V
RX1
MGC RX2
RX3
RX1
3.0 V RX2
RX3
RX1
3.75 V RX2
RX3
AF1
AF2
AF3
VV
X11
X12
*) not fitted
RX1
*)
RX2
*)
RX3
*)
Fig. 1.7 Control Unit (R&S EK 896), Block Diagram
6164.0717.02_01
> 1.13 >

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