![background image](http://html1.mh-extra.com/html/gantner/idl-101/idl-101_instruction-manual_3407496036.webp)
IDL 101
SIGNAL PROCESSING
34
HB_IDL101_E_V222.doc
Gantner Instruments Test & Measurement GmbH
22 k
VP
VP
Figure 5.2 Internal pull-up resistor at the digital I/Os
5.3. Internal Reference Voltage
An internal reference voltage serves to adjust the entire analog signal processing automatically.
5.4. Internal Processing
Figure 5.3 Block diagram Datalogger IDL 101
B
AI
n +
AI
n +
AI
n +
AI
n +
AI
n +
AI
n +
A
SO
URC
E
SO
URC
E
SO
URC
E
SO
URC
E
SO
URC
E
SO
URC
E
RS 4
8
5
In
te
rf
ac
e
A/D
C
onv
er
te
r
RUN-L
E
D
ERROR-L
E
D
RT
C
(B
uffe
re
d
)
RAM
(B
uffe
re
d
)
FLA
S
H
EEP
RO
M
Vo
lta
g
e
Re
gu
la
to
r
RS 2
32
In
te
rf
ac
e
An
a
lo
g
M
ul
tip
le
xe
r
D/A
Co
nv
e
rt
er
Ma
in
P
ro
c.
(µP
)
Di
gi
ta
l I/
O
+10
..30 V
AI
n -
AI
n -
AI
n -
AI
n -
AI
n -
AI
n -
AI
n -
I/O
0
7
I/O
0
6
I/O
0
5
I/O
0
4
I/O
0
3
I/O
0
2
I/O
0
1
I/O
0
8
I/O
0
9
I/O
1
0
I/O
1
1
I/O
1
2
I/O
1
3
I/O
1
4
I/O
1
5
I/O
1
6
0 V
RX
TX
CO
M
A
GN
D
A
GN
D
A
GN
D
A
GN
D
A
GN
D
A
GN
D
A
GN
D
Op
tic
In
te
rf
ac
e
RS
4
85
Di
gi
ta
l
=
=
=
A
nal
og
RS
2
3
2
FL
ASH
EPRO
M
SRAM