Jäger ADwin-Pro, System And Hardware Description

Page: 53 / 218

ADwin-Pro Hardware, manual version 2.9, June 2006
49
Pro I: Analog Input Modules
Pro-AIn-32/12 Rev. B
ADwin
5.5.5 Pro-AIn-32/12 Rev. B
To this module you find an improved successor module Pro-AIn-32/14 Rev. A
(see page 53 ).
The analog input module Pro-AIn-32/12 Rev. B has a 12 bit ADC and a pro-
grammable gain (PGA). It is equipped with 32 single-ended inputs and 16 dif-
ferential inputs (software-selectable). The inputs are connected on a 37-pin
DSub socket. The module can be combined with Pro-TC and Pro-PT modules.
The input voltage range of the ADC can be set by jumpers (see
page 50 ).
The module Pro-AIn-32/12 Rev. B is an advanced development of the module
Pro-AIn-32/12 with an input voltage range of ± 10V or 0-10V and a gain, pro-
grammable by software of 1, 2, 4 or 8. The adjustment of gain and offset is
made by software (see
chapter 6.3.1 "Calibration per Software" ).
Fig. 74 – Pro-AIn-32/12 Rev. B : Block diagram
After power-up the module is set to 16 differential inputs.
Figures 76 and 77 show the pin assignment of the module. Please consider the
different pin assignment for differential and single-ended inputs.
ADwi
n
-Pro
bus
A
D
1
330k
330k
2
330k
330k
32
330k
330k
. . . . . . . . .
Addr.
Data
Data
Register
Address
Decoder
Data
PGA
Vu= 1, 2, 4, 8
3
4
31
.
. . . . . . . .
MUX
Input channels 32 single-ended oder 16 differential
Resolution 12 bit
Conversion time max. 0.75µs
Sampling rate max. 1250ksps
Multiplexer settling time 3µs
Measurement ranges
0…10V, ±10V
optional 0…20mA / 16 channels
Gain 1, 2, 4, 8 software selectable
Accuracy
INL typ. ±0.3 LSB, max. ±1 LSB
DNL typ. ±0.3 LSB, max. ±1 LSB
Input resistance 330k
Ω
, ±2%
Input over-voltage ±17V
Offset error adjustable
Offset drift ±30 ppm/ºC
Connector 37-pin DSub socket
Fig. 75 – Pro-AIn-32/12 Rev. B : Specification