ADwin-Pro
Hardware, manual version 2.9, June 2006
167
Pro I: Signal Conditioning and Interface Modules
Pro-LPSH-4-FI Rev. A, Pro-LPSH-8-FI Rev. A
ADwin
5.9.4 Pro-LPSH-4-FI Rev. A, Pro-LPSH-8-FI Rev. A
The module Pro-LPSH-4-FI Rev. A has 4 low-pass filters of 4th order with
Sample & Hold and isolation amplifiers, the module Pro-LPSH-8-FI Rev. A has
8 of these low-pass filters. The filters are Butterworth filters with a fixed cut-off
frequency. The frequency has to be indicated when you place an order. The
inputs are all optically isolated from system circuitry and from each other.
A low-pass filter module has to be used in combination with an analog input
module. (Pro-AIn-8/12 or Pro-AIn-8/16). A low-pass filter module and an ana-
log input module are then forming one unity, which is 2 inches (10 HP) wide
and therefore needs two slots.
The switching from sample to hold mode has to be made by the instruction
SH_SETMODE(module,mode)
.
Fig. 295 – Pro-LPSH-8-FI Rev. A in combination with Pro-AIN-8/12 Rev. A
Input channels
4 at Pro-LPSH-4-FI Rev. A, isolated
8 bei Pro-LPSH-8-FI Rev. A, isolated
Input voltage range
±10V
Isolation voltage
1kV
Offset drift
40 ppm/°C
Non-linearity
0.016%
Input resistance
100k
Ω
Filter
Butterworth 4
th
order
Cut-off frequency
5kHz, 10kHz, 20kHz
(other frequencies on request)
Cut-off frequency error
±5%
Sample & Hold drift
1.5mV/s
Linearity
±1 LSB (12 bit)
Connector
4 / 8 LEMO sockets
(optional: 37-pin DSub socket)
Fig. 296 – Pro-LPSH-4/8-FI Rev. A: Specification
MUX
addr.
data
data
register
address
decoder
1
. . .
. .
A
D
10
0k
LPF
ISO
2
10
0k
LPF
ISO
8
10
0k
LPF
ISO
. . .
. .
. . .
. .
. . .
. .
PGA
S&H
S&H
S&H
ADwi
n
-P
ro
bu
s
. .
.
. .
