Rohde & Schwarz CMU 200 Service Manual

R&S CMU Instrument Design and Function Description
1100.4903.82 3.23 E-5
X61
X62
X63
X600
Et her net
Grundboard
Sandwich Module
(PADDR 0..31)
P
DATA 0..31
3
x
L
VT
245
D
PR
2K x 8
LVT
245
ISA-
Control/
Status
Register
PPC-
Control/
Status
Register
D0..7
(A16..31)
CMD
D0..7
S
D0..7
P
ower PC (PPC)
MPC860P
80 MHz
L
TX971
R
S232
B
uffer
E
thernet
Transformer
2 x RS232
E
thernet
S
DRAM
4M x 32
0
..31
A
MD
F
LASH
4M x 16
0..15
P
PC-
Config-
Register
CSM
5000
0..31
XILINX
XCV400
B
GA560
Digital I
Digital Q
SRAM
512K x 16
I
Q
CSM Out
A
D
I
A
D
Q
Level
Shifter
3V-->5V
I0..15
Q0..15
I
SA-Bus
AUC
on
Digitalboard
Digital I/Q
from
Digitalboard
0..31
0
..15
0..7
CMU-B82
Access Module
CMU-B85
Speech Codec Module
1 x Data
2 x Address
CMU-B88
1
xEV-DO Module
Non Signaling
0..31
D
ATA 0..31
LVT
1
6245
(A16..31)
HDR_SPARE
0..39
0
..11
0..11
Digi tal I/Q
CMU-B82
DS P
5
6311
Audio Codec
I/O Int erface
Figure 3-3: CDMA2000 Var12 Signalling Unit block diagram
Option CDMA2000 Signaling Unit R&S CMU-B83 Var22
The CDMA2000 Signalling Unit is a module of the R&S CMU200 providing signalling and measuring
support for the CDMA2000 cellular phone network.
With the use of analog and digital hardware and firmware, this module uses the down converter and a
signal generator in the R&S CMU200 to establish a link with a CDMA mobile station.
Design
The CDMA2000 Signalling Unit is a plug-in module with a complete
aluminum shell providing optimal electrical shielding of the module.
Cooling system
Ventilation holes on the right and left of the shell produces a large cooling
flow through the module by means of the instrument fan.
Control and supply
The MOTHERBOARD 1 provides bus lines, the voltage supply, and controls
the CDMA2000 Signalling Unit via two 96-pin connectors and one 48-pin
connector. Further interfaces for testing and debugging are provided on the
top of the module.
Function
The CDMA2000 Signalling Unit contains the hardware for signal
demodulation and signal generation of a CDMA2000 system. See Figure
3-2 for a simplified block diagram.
A high performance POWER PC Module with peripheral equipment and one
FPGA with peripheral ASIC on the board control all the processes on the
module

Rohde & Schwarz CMU 200 Specifications

General

Brand	Rohde & Schwarz
Model	CMU 200
Category	Test Equipment
Language	English