Jäger ADwin-Pro, System And Hardware Description

Page: 46 / 218

Pro I: Analog Input Modules
Pro-AIn-8/12 Rev. B
ADwin
42
ADwin-Pro Hardware, manual version 2.9, June 2006
5.5.2 Pro-AIn-8/12 Rev. B
To this module you find an improved successor module Pro-AIn-8/14 Rev. A
(see page 44 ).
The analog input module Pro-AIn-8/12 Rev. B has a 12 bit ADC and 8 differ-
ential inputs. A programmable amplifier (PGA) and a multiplexer (MUX) are
connected before the ADC.
The inputs are available with the following connectors:
– Pro-AIn-8/12: shielded LEMO-sockets, CAMAC European norm.
– Pro-AIn-8/12-D: DSub socket 37-pin.
The module can be combined with amplifiers, filters, Pro-TC and Pro-PT mod-
ules.
The input voltage range of the ADC can be set by DIL switches (see page 43 ).
The module Pro-AIn-8/12 Rev. B is an advanced development of the module
Pro-AIn-8/12 Rev. A with an input voltage range of ± 10V or 0...10V and a gain,
programmable 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" , page 194 ).
Fig. 58 – Pro-AIn-8/12 Rev. B : Block diagram
Input channels 8 differential via multiplexer
Resolution 12 bit
Conversion time max. 0.75µs
Sampling rate max. 1250ksps
Multiplexer settling time 3µs
Measurement ranges 0…10V, ±10V
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 8 LEMO sockets
optional: 37-pin DSub socket
Fig. 59 – Pro-AIn-8/12 Rev. B : Specification
ADwi
n
-Pro
bus
A
D
MUX
1
330k
330k
2
330k
330k
8
330k
330k
. . . . . .
Addr.
Data
Data
Register
Address
Decoder
Data
PGA
Vu= 1, 2, 4, 8
. . . . .