Analog Interface - Datron 1062 Service Handbook

Binary
coded
D-A
data
—
See Appendix
1
for
F
E.T'
patterns
''/////z'/M
V///////z^_
'Z^ZZZZ>':
:
:_v_t::
-410pS-*J-^ 270pS-
I
I
I
K280pS -1-^260
pS
—
1-^270
^iS-
I I
I
H^260^iS-
=
^u.
c
-OCD^
4_i
_
0)
O
5,
O
®
IT
O
<A
^
0) *3)
'r *-
(0
cc yj
^
cc
FIG.
3.6
GENERAL FORM
OF
ANALOG INTERFACE UPDATE
TIMING
DIAGRAM
Data Messages
from
Digital
Board
ANALOG
INTERFACE
INPUT
ATTENUATOR
ACTIVE
FILTER
GAIN
NETWORK
|
.
+BS
lnput\^
Amplif
ier>
-Output
to
A-D
Converter
±
40V
L
Inverter
BS =
DC
Bootstrap
Common
+BS = +
DC
Bootstrap
-BS
= - DC
Bootstrap
FIG. 3.7
SIMPLIFIED
DIAGRAM
OF DC ISOLATOR