Fig. 1.8 Control Unit R&S Gb4000C, Block Diagram - Rohde & Schwarz M3SR Series 4100 Service Manual

R&S M3SR Series 4100 HF Transceivers
The R&S GB 4000C Comfort Control Unit also includes a connector for connection of a Key Distribution
Device (KDD). The controller board contains a KDD transceiver for distribution of management data to
the radio.
Model 03 of R&S GB 4000C Comfort Control Unit contains a separate power supply module for 28 VDC
supply. The power supply module comprises all functional groups for generating the supply voltages
+3.3 VDC, +8.7 VDC, +5 VDC and -12 VDC. In addition, audio, RS485/RS422/RS232, Ethernet and
2
I C bus signals from/to the control board pass through this module.
Power Supply
(only Mod. 03)
X43 DC Power
X44 LAN
X100
Main
X45
RS485
X46
Audio
X8
6124.9007.82.01
Fig. 1.8 Control Unit R&S GB4000C, Block Diagram
LAN
Transceiver
Interface
AFU
RS232, RS422,
RS485
32 768 Hz
X400
Main
Real-time
Clock
EEPROM
Goldcap-
buffered
System
Hardware 40 MHz
Monitor
Comfort Control Unit (Option) - Function
Test Connector
IrDA
Microcontroller
SRAM
µC Bus
Goldcap-
buffered
FLASH
PROM
PC
Clock
4 MHz
FPGA
KDD
Trans-
ceiver
Controller Board
ICN-S4100-A-E11100-R-D0894-00206-A-01-1
1.22
W420
X2
5" TFT 320 x 234
W430
X3
IR
Encoder/
Decoder
Panel Illumination
W410
X1
X1
LCD
RGB
Contoller
Rotary Knob
SRAM
KDD Connector X4
Front Panel Board
Display
ON
Keyboard
CU
G
GO
IrDA
Optics