Welch Allyn Atlas - Page 8

A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
Serial I/O
connector
Isolation
Barrier
Isolated Supply
Serial
Communication
620017.dsn
Rick Myers
Rick Myers
Mar 5, 1999
Mar 5, 1999
3/15/99JAC5-39121 LPP
L. Phillips
Z. Psenicnik
J. Bello
3/16/99
3/16/99
3/16/99
B See ECN worksheet 5-39455 4/27/99LPP LPP
Improvements for ESD, RFI,
and Fast Transients, Correct
Respiration Diff-Amp Topology
D 6/24/995-39821 LPP
Mods to U2 clock line, Resp
gain amp, ECG supply and
NVRAM pullup
E 7/9/99LPP5-39936
LPP
620017 E
Serial Communication
C
88Wednesday, July 14, 1999
Title
Size
Document Number
Rev
Date: Sheet of
Welch Allyn Inc.
Schematic:
Release For Production
Approved
Checked
Designed
Drawn
Initial Date
REV
Description
ECN/ECO Init
Date Ckd
A Release to Production
iso802-a
R803-2
ISO801-2
ISO801-4
ISO801-1
U801-ct
R815-1
U801-1
U802-15
T801-1
T801-4
U801-5
Tx
U802-3
Rx
U802-2
T801-5
q801-e
iso803-a
q802-e
contact2
contact1
iso803-c
T801-2
R812-1
q802-b
+5V
RVcc
+5V
RVee
RS423Rx
+5V
R+5V
R+5V
RVee
R+5V RVcc
R+5V
NurseCall
RS423Tx
+Vfuse
R+5V
+5V
R
R
R
R
R
R
R
R
R
R
RR
R
R
RR
R
R
C808
.047uF
TP806
U801
MC34063AD
53
7
8
1
2
6
4
COMPTCAP
IPK
IDC
ISWC
ISWE
Vcc
GND
D803
BAV99L
1
3
2
U805
TPS5908
1
2
3
4
7
6
LED
COMP
GND
FB
C
E
TP808
R804
5.11K
C809
.047uF
U803
HCNW4503
2
3
8
6
5
Q801
MMBT3904L
3
1
2
C802
220pf
U804
HCNW4503
2
3
8
6
5
C806
.01uF
C814
680pF
TP810
TP807
R813
619
R811
6.19K
R807
6.19K
D801
BAV99L
1
3
2
K801
RELAY SPST
2
4
1
3
D802
BAV99L
1
3
2
R805
3.16K
TP809
R806
1K
+ C803
100uF
R812
215
R801
1
C813
470pf
R819 215
Q802
MMBT3904L
3
1
2
R802
5.11K
R810
619
+
C805
100uF
+ C804
100uF
TP802
R817 215
U802
TL145406
2
4
6
3
5
7
15
13
11
14
12
10
1 16
8 9
1RA
2RA
3RA
1DY
2DY
3DY
1RY
2RY
3RY
1DA
2DA
3DA
Vdd
Vcc
Vss GND
C816
.047uF
+ C801
1uF
J801
RJ-45
1
2
3
4
5
6
7
8
TP804
C812
680pF
R803
10K
C815
.047uF
C810
.047uF
TP805
TP801
R808
619
T801
IsoXfmr
5
8
1
2
3
4
TP803
R816
215
C807
470pf