![Spacelabs Healthcare Ultraview 90341 Скачать руководство пользователя страница 109](http://html1.mh-extra.com/html/spacelabs-healthcare/ultraview-90341/ultraview-90341_service-manual_1339025109.webp)
www.spacelabshealthcare.com
3 - 1 1
U
L T R A V I E W
D
I G I T A L
T
E L E M E T R Y
- S
E R V I C E
M
A N U A L
T
H E O R Y
Figure 3-8 91341/91343/91347 Digital Module
Transmitter RF PCBA Description (91341/91343/91347)
RF PCBA
The RF PCBA consists of a direct conversion transmitter
(transmission modulation data is directly converted to RF in the
1400 MHz bands). The design consists of several key modules.
RF transmitter module:
•
VCO
•
Synthesizer
•
TCXO – crystal oscillator
•
Antenna filter
•
RF switch
•
Buffer amplifier
SynClk
SynData
SynLE
Microcontroller
Baseband
Deviation
Control
DLE1
TXMod
TCK
TMS
10 Pin
Test Header
DLE2
SynData
SynClk
+9V
TCK
PAL
PW M Filter
PW M
PDM_RST
PDM_FMT
!PDM_RST
Analog
Multiplexer
+2.
5
V Vr
e
f
Lea
d I
Le
ad I
I
Lea
d I
II
AU
X
Lea
d I
V
Digital
Multiplexers
FD0
FD2
FD1
FD0 - FD5
Status
RA ON
RL ON
CH ON
LL ON
LA ON
Pacer Flag
Clock
Generator
8.192kHz
32.
76
8k
H
z
Record
SPO2T1 Timing
SPO2T2 Timin
3.3V
Switching
Regulator
BT1 (9V)
5.0V
5.0V
Switching
Regulator
LowBatt
Data Select
ExtMod
ModOut
2.5V
Vref
SynLE
SPO2
BT1
VCC5V5
TMS
TDI
TDIO
TD
I
TD
IO
16 line
Latch
Parallel - serial
converter
Cl
k
Low Batt
GN
D
+5V
Sp
ar
e
SynLD
Pulse
VCC3V3
VCC3V3
Dip-Switch Bus