Jäger ADwin-Pro, System And Hardware Description

Page: 67 / 218

ADwin-Pro Hardware, manual version 2.9, June 2006
63
Pro I: Analog Input Modules
Pro-AIn-32/16 Rev. C
ADwin
5.5.12 Pro-AIn-32/16 Rev. C
The analog input module Pro-AIn-32/16 Rev. C has a 16-bit ADC and a pro-
grammable gain amplifier (PGA). It has 32 single-ended or 16 differential
inputs (software selectable). The inputs are connected to a 37-pin DSUB
socket. The module can be combined with amplifiers, filters, Pro-TC and
Pro-PT modules.
The module Pro-AIn-32/16 Rev. C is equipped with an input voltage range of
±10V and a gain amplifier, programmable by software to 1, 2, 4 or 8. The
adjustment of gain and offset is made by software (see
chapter 6.3.1 "Calibra-
tion per Software" ).
In addition, the module has a sequential control, which by request reads the
measurement values from all input channels successively.
Fig. 108 – Pro-AIn-32/16 Rev. C : Block diagram
On Startup the module is set to 16 differential inputs.
Figures 110 and 111 show the pin assignments of the module. Please consider
the different pin assignment for differential and single-ended inputs.
.
ADwi
n
-P
ro
bus
A
D
1
330k
330k
2
330k
330k
32
330k
330k
. . . . . . . . .
Addr.
Data
Data
Registers
Data
PGA
Vu= 1, 2, 4, 8
3
4
31
. . . . . . . . .
MUX
Address
Decoder
Sequence
Control
Control
Input channels:
32single-ended oder 16 differential;
via multiplexer
Resolution: 16 bit
Conversion time: max. 5µs
Sampling rate: max. 200ksps
Multiplexer settling time: 6µs
Measurement ranges: ±10V
Gain: 1, 2, 4, 8 software selectable
Accuracy INL max. ±2 LSB
DNL max. +1 LSB
Input resistance: 330k
Ω
, ±2%
Input over-voltage: ±35V
Offset error: adjustable
Offset drift: ±30 ppm/ºC
Connector: 37-pin DSub socket
Fig. 109 – Pro-AIn-32/16 Rev. C : Specification