v 20081231 1
C 40000 40000 0 0 0 title-B.sym
N 51900 46400 52300 46400 4
N 48000 49200 48000 46700 4
N 52300 46600 52100 46600 4
N 52300 45600 52100 45600 4
N 52100 45600 52100 42100 4
C 53900 42600 1 0 0 lm741-1.sym
{
T 54400 43500 5 10 1 1 0 0 1
refdes=U6
}
N 53900 42800 53900 42200 4
C 52400 41600 1 0 0 gnd-1.sym
N 53700 46100 54300 46100 4
N 47800 47000 47800 50300 4
N 41700 47000 41200 47000 4
C 48200 48000 1 0 0 vcc-1.sym
N 47500 47000 47800 47000 4
N 47500 46400 47800 46400 4
N 47800 46400 47800 42300 4
C 56500 42100 1 90 0 diode-1.sym
{
T 56700 42300 5 10 1 1 180 0 1
refdes=D5
T 55900 42500 5 10 0 0 90 0 1
device=DIODE
}
C 56200 41800 1 0 0 gnd-1.sym
C 52000 49200 1 90 0 capacitor-1.sym
{
T 51300 49400 5 10 0 0 90 0 1
device=CAPACITOR
T 51500 49700 5 10 1 1 180 0 1
refdes=C3
T 51100 49400 5 10 0 0 90 0 1
symversion=0.1
T 51700 50000 5 10 1 1 180 0 1
value=1nF
}
C 52000 42100 1 90 0 capacitor-1.sym
{
T 51300 42300 5 10 0 0 90 0 1
device=CAPACITOR
T 51500 42600 5 10 1 1 180 0 1
refdes=C4
T 51100 42300 5 10 0 0 90 0 1
symversion=0.1
T 51700 42900 5 10 1 1 180 0 1
value=1nF
}
T 45300 50600 9 10 1 0 0 0 1
Calibrate
T 56000 43200 9 10 1 0 0 0 2
Analogue
0 to 2.5V
C 40200 45400 1 0 0 switch-3p2t.sym
{
T 40610 45850 5 10 0 0 0 0 1
device=Dual_Two_Way_Switch
T 40310 47500 5 10 1 1 0 0 1
refdes=S1
T 40510 45300 5 10 0 0 0 0 1
footprint=CONNECTOR 2 3
T 40900 46700 5 10 0 0 0 0 1
symversion=1.0
}
N 42700 42600 43300 42600 4
N 43000 42300 42700 42300 4
N 42700 42000 43100 42000 4
N 40200 45600 40200 43200 4
N 43300 42400 43000 42400 4
N 42700 41700 43200 41700 4
C 41800 41200 1 180 0 vcc-1.sym
N 45900 42800 45300 42800 4
T 47800 40400 9 10 1 0 0 0 2
Switch
Position
T 40200 46800 9 10 1 0 0 0 1
Input
T 51300 41100 9 10 1 0 0 0 1
Differential Instrumentation Amplifier
T 54000 40100 9 10 1 0 0 0 1
Ken Sarkies
T 54000 40400 9 10 1 0 0 0 1
07/05/2007
T 50300 40100 9 10 1 0 0 0 1
1
T 52000 40100 9 10 1 0 0 0 1
1
T 45700 47900 9 10 1 0 0 0 1
Analogue Switch
T 48300 44700 9 10 1 0 0 0 2
Dual 4-input
Multiplexer
T 53300 46800 9 10 1 0 0 0 2
Instrumentation
Amplifier
T 54200 43800 9 10 1 0 0 0 1
Offset
T 53200 47500 9 10 1 0 0 0 13
Calibrate allows the inputs to be zeroed
for measurement of offset.

Switch select allows controller to
determine setting of switches.

Resistors to give attenuations of
10, 100, 1000

Offset adjust to allow measurements
about zero volts.

Half of Dual Analogue Module
B 53000 47400 3700 3400 3 0 0 0 -1 -1 0 -1 -1 -1 -1 -1
N 51900 46400 51900 49200 4
N 51900 49200 48000 49200 4
N 48800 47200 48800 50500 4
N 49000 47200 49000 50500 4
T 48700 50600 9 10 1 0 0 0 1
Gain
C 45200 44100 1 90 0 gnd-1.sym
C 40600 43200 1 270 0 resistor-1.sym
{
T 41000 42900 5 10 0 0 270 0 1
device=RESISTOR
T 40300 42700 5 10 1 1 0 0 1
refdes=R8
T 40200 42400 5 10 1 1 0 0 1
value=10K
}
C 40900 42300 1 180 0 vcc-1.sym
C 42500 49800 1 90 1 resistor-1.sym
{
T 42100 49500 5 10 0 0 270 2 1
device=RESISTOR
T 42200 49400 5 10 1 1 0 6 1
refdes=R2
}
C 42500 48900 1 90 1 resistor-1.sym
{
T 42100 48600 5 10 0 0 270 2 1
device=RESISTOR
T 42200 48500 5 10 1 1 0 6 1
refdes=R3
}
N 43000 50700 43000 48000 4
N 42900 47600 42900 49800 4
N 42900 49800 42400 49800 4
N 41700 47000 41700 50700 4
N 43100 44000 43100 42000 4
N 43900 44400 43000 44400 4
N 43000 44400 43000 42300 4
N 43900 44800 42900 44800 4
N 42900 44800 42900 42600 4
C 50600 48400 1 90 1 resistor-1.sym
{
T 50200 48100 5 10 0 0 270 2 1
device=RESISTOR
T 50300 48000 5 10 1 1 0 6 1
refdes=R12
}
C 50800 49000 1 180 1 resistor-1.sym
{
T 51100 48600 5 10 0 0 180 6 1
device=RESISTOR
T 50700 49100 5 10 1 1 180 6 1
refdes=R10
}
C 50800 48500 1 180 1 resistor-1.sym
{
T 51100 48100 5 10 0 0 180 6 1
device=RESISTOR
T 50700 48600 5 10 1 1 180 6 1
refdes=R11
}
C 50600 47500 1 90 1 resistor-1.sym
{
T 50200 47200 5 10 0 0 270 2 1
device=RESISTOR
T 50300 47100 5 10 1 1 0 6 1
refdes=R13
}
C 50600 46600 1 90 1 resistor-1.sym
{
T 50200 46300 5 10 0 0 270 2 1
device=RESISTOR
T 50300 46200 5 10 1 1 0 6 1
refdes=R14
}
C 50600 45700 1 90 1 resistor-1.sym
{
T 50200 45400 5 10 0 0 270 2 1
device=RESISTOR
T 50300 45300 5 10 1 1 0 6 1
refdes=R15
}
C 50600 44800 1 90 1 resistor-1.sym
{
T 50200 44500 5 10 0 0 270 2 1
device=RESISTOR
T 50300 44400 5 10 1 1 0 6 1
refdes=R16
}
C 50800 44000 1 180 1 resistor-1.sym
{
T 51100 43600 5 10 0 0 180 6 1
device=RESISTOR
T 50700 44100 5 10 1 1 180 6 1
refdes=R17
}
C 50800 43500 1 180 1 resistor-1.sym
{
T 51100 43100 5 10 0 0 180 6 1
device=RESISTOR
T 50700 43600 5 10 1 1 180 6 1
refdes=R18
}
N 49500 45400 49500 43400 4
N 49500 43400 50800 43400 4
N 51700 43400 51700 46000 4
N 51700 46000 52300 46000 4
N 51700 48900 51700 46200 4
N 51700 46200 52300 46200 4
N 50800 48900 49500 48900 4
N 49500 48900 49500 46200 4
N 49600 46400 49600 48400 4
N 49600 48400 50800 48400 4
N 49600 45600 49600 43900 4
N 49600 43900 50800 43900 4
N 49700 46600 49700 47500 4
N 49700 47500 50500 47500 4
N 49700 45800 49700 44800 4
N 49700 44800 50500 44800 4
N 49500 45400 49400 45400 4
N 49600 45600 49400 45600 4
N 49700 45800 49400 45800 4
N 49400 46200 49500 46200 4
N 49400 46400 49600 46400 4
N 49400 46600 49700 46600 4
N 49800 45700 50500 45700 4
N 49800 45700 49800 46000 4
N 49800 46000 49400 46000 4
N 49400 46800 49800 46800 4
N 49800 46800 49800 46600 4
N 49800 46600 50500 46600 4
N 52300 45800 51900 45800 4
N 51900 45800 51900 43000 4
N 51900 43000 48000 43000 4
N 48000 43000 48000 45600 4
C 42500 44300 1 90 0 resistor-1.sym
{
T 42100 44600 5 10 0 0 90 0 1
device=RESISTOR
T 42200 44700 5 10 1 1 180 0 1
refdes=R7
}
C 42500 45200 1 90 0 resistor-1.sym
{
T 42100 45500 5 10 0 0 90 0 1
device=RESISTOR
T 42200 45600 5 10 1 1 180 0 1
refdes=R6
}
N 43900 46000 42700 46000 4
N 42700 46000 42700 44300 4
N 42700 44300 42400 44300 4
N 42800 46400 42800 43400 4
C 42800 40500 1 0 0 gnd-1.sym
N 42900 40800 43300 40800 4
C 53200 45400 1 0 0 gnd-1.sym
T 46000 48200 9 10 1 0 0 0 1
Calibration
N 55800 43000 56600 43000 4
N 53900 42200 54900 42200 4
N 54900 42200 54900 43000 4
N 53900 44200 53900 43200 4
C 54900 42900 1 0 0 resistor-1.sym
{
T 55200 43300 5 10 0 0 0 0 1
device=RESISTOR
T 55100 43400 5 10 1 1 0 0 1
refdes=R24
T 55100 43200 5 10 1 1 0 0 1
value=10K
}
C 55900 42100 1 90 0 resistor-1.sym
{
T 55500 42400 5 10 0 0 90 0 1
device=RESISTOR
T 55600 42500 5 10 1 1 180 0 1
refdes=R25
T 55400 42100 5 10 1 1 0 0 1
value=10K
}
C 55700 41800 1 0 0 gnd-1.sym
C 54000 45100 1 90 1 resistor-1.sym
{
T 53600 44800 5 10 0 0 270 2 1
device=RESISTOR
T 53700 44700 5 10 1 1 0 6 1
refdes=R21
T 53400 44500 5 10 1 1 0 0 1
value=100K
}
N 53900 46100 53900 46500 4
N 53300 46500 53900 46500 4
C 54300 46000 1 0 0 resistor-1.sym
{
T 54600 46400 5 10 0 0 0 0 1
device=RESISTOR
T 54500 45600 5 10 1 1 0 0 1
value=20K
T 54500 45800 5 10 1 1 0 0 1
refdes=R19
}
C 55600 44200 1 90 0 resistor-1.sym
{
T 55200 44500 5 10 0 0 90 0 1
device=RESISTOR
T 55300 44600 5 10 1 1 180 0 1
refdes=R20
T 54900 44200 5 10 1 1 0 0 1
value=10K
}
C 55400 43900 1 0 0 gnd-1.sym
N 55500 45400 53900 45400 4
N 55500 46100 55200 46100 4
N 53900 45100 53900 45400 4
N 55500 45100 55500 46100 4
C 52300 44200 1 0 0 vdd-1.sym
C 52600 44200 1 90 1 resistor-1.sym
{
T 52200 43900 5 10 0 0 270 2 1
device=RESISTOR
T 53000 43800 5 10 1 1 0 6 1
refdes=R26
T 52700 43600 5 10 1 1 0 0 1
value=20K
}
N 45300 46400 45300 50500 4
C 42500 50700 1 90 1 resistor-1.sym
{
T 42100 50400 5 10 0 0 270 2 1
device=RESISTOR
T 42200 50300 5 10 1 1 0 6 1
refdes=R1
}
C 41600 49800 1 90 0 capacitor-1.sym
{
T 40900 50000 5 10 0 0 90 0 1
device=CAPACITOR
T 41100 50300 5 10 1 1 180 0 1
refdes=C1
T 40700 50000 5 10 0 0 90 0 1
symversion=0.1
T 41300 50600 5 10 1 1 180 0 1
value=0.1uF
}
N 41400 50700 43000 50700 4
N 41400 49800 41400 47400 4
N 43900 45200 42900 45200 4
N 42900 46100 42400 46100 4
N 42800 47200 42800 48900 4
N 42800 48900 42400 48900 4
C 44900 48100 1 180 0 switch-3p4t.sym
{
T 44490 47550 5 10 0 0 180 0 1
device=Dual_Two_Way_Switch
T 44790 43900 5 10 1 1 180 0 1
refdes=S2
T 44590 48100 5 10 0 0 180 0 1
footprint=CONNECTOR 2 3
T 44200 46700 5 10 0 0 180 0 1
symversion=1.0
}
C 42500 43400 1 90 0 resistor-1.sym
{
T 42100 43700 5 10 0 0 90 0 1
device=RESISTOR
T 42200 43800 5 10 1 1 180 0 1
refdes=R8
}
N 42900 46100 42900 45200 4
N 42700 46800 42700 48000 4
N 43900 44000 43100 44000 4
N 43200 42000 43300 42000 4
C 41100 45100 1 0 0 gnd-1.sym
C 41600 43400 1 90 0 capacitor-1.sym
{
T 40900 43600 5 10 0 0 90 0 1
device=CAPACITOR
T 41100 43900 5 10 1 1 180 0 1
refdes=C2
T 40700 43600 5 10 0 0 90 0 1
symversion=0.1
T 41300 44200 5 10 1 1 180 0 1
value=0.1uF
}
N 42400 45200 42600 45200 4
N 42600 45200 42600 45600 4
N 41200 46200 41400 46200 4
N 41400 46200 41400 44300 4
N 41200 46600 41700 46600 4
N 41700 46600 41700 43400 4
N 41400 43400 42800 43400 4
N 41400 47400 41200 47400 4
N 44900 47700 47500 47700 4
N 47500 47700 47500 47200 4
N 44900 45800 47500 45800 4
N 47500 45800 47500 46200 4
N 47500 46800 47500 46600 4
N 45300 46400 45400 46400 4
N 45300 47000 45400 47000 4
C 52600 41900 1 90 0 resistor-1.sym
{
T 52200 42200 5 10 0 0 90 0 1
device=RESISTOR
T 53100 42400 5 10 1 1 180 0 1
refdes=R27
T 52700 42000 5 10 1 1 0 0 1
value=10K
}
N 52500 43200 53000 43200 4
C 42700 42700 1 90 1 resistorpack5-1.sym
{
T 41300 42600 5 10 0 0 270 2 1
device=RESISTORPACK_5
T 41700 42900 5 10 1 1 0 2 1
refdes=RP1
}
C 43300 40400 1 0 0 74148-2.sym
{
T 43600 45340 5 10 0 0 0 0 1
device=74148
T 43600 45140 5 10 0 0 0 0 1
footprint=DIP16
T 44900 43000 5 10 1 1 0 6 1
refdes=U2
}
N 43200 41700 43200 43600 4
N 43300 42200 43100 42200 4
C 45400 45100 1 0 0 AD7512-2.sym
{
T 45700 47650 5 10 0 0 0 0 1
device=4066
T 47200 47500 5 10 1 1 0 6 1
refdes=U1
T 45700 47850 5 10 0 0 0 0 1
footprint=DIP14
}
N 45300 42400 45900 42400 4
N 40200 43200 45900 43200 4
N 45900 43400 45600 43400 4
N 45600 43400 45600 40400 4
N 45900 43000 45700 43000 4
N 45700 43000 45700 40400 4
N 45900 42600 45800 42600 4
N 45800 42600 45800 40400 4
C 47000 44000 1 180 0 gnd-1.sym
C 49400 45200 1 0 1 ADG409-1.sym
{
T 48775 46150 5 8 0 0 0 6 1
device=LM741
T 49300 47200 5 10 1 1 0 6 1
refdes=U4
}
N 47300 43200 47700 43200 4
N 47700 43200 47700 40400 4
N 47300 42800 47500 42800 4
N 47500 42800 47500 40400 4
N 47300 42400 47600 42400 4
N 47600 42400 47600 40400 4
T 46000 40400 9 10 1 0 0 0 2
From other
Channel
N 46300 43800 46300 45400 4
N 46300 45400 45100 45400 4
N 45100 45400 45100 50500 4
T 43900 50600 9 10 1 0 0 0 1
Channel A/B
C 45800 44500 1 180 0 vcc-1.sym
C 45300 49500 1 0 0 resistor-1.sym
{
T 45600 49900 5 10 0 0 0 0 1
device=RESISTOR
T 45500 49200 5 10 1 1 0 0 1
refdes=R28
T 45500 49000 5 10 1 1 0 0 1
value=10K
}
C 46200 49800 1 270 0 vcc-1.sym
C 45500 45400 1 270 0 resistor-1.sym
{
T 45900 45100 5 10 0 0 270 0 1
device=RESISTOR
T 45800 44900 5 10 1 1 0 0 1
refdes=R9
T 45800 44700 5 10 1 1 0 0 1
value=10K
}
N 43000 48000 43900 48000 4
N 43200 43600 43900 43600 4
N 42800 47200 43900 47200 4
N 42700 46800 43900 46800 4
N 42900 47600 43900 47600 4
N 42800 46400 43900 46400 4
N 42600 45600 43900 45600 4
N 42400 48000 42700 48000 4
N 45300 42800 45300 42600 4
N 44900 47400 44900 47700 4
C 50100 41700 1 0 0 lm741-1.sym
{
T 50600 42600 5 10 1 1 0 0 1
refdes=U7
}
C 50000 49700 1 0 0 lm741-1.sym
{
T 50500 50600 5 10 1 1 0 0 1
refdes=U8
}
N 51000 50100 52100 50100 4
N 52100 46600 52100 50100 4
N 51100 42100 52100 42100 4
N 50100 42300 47800 42300 4
N 50000 50300 47800 50300 4
N 50000 49900 50000 49600 4
N 50000 49600 51000 49600 4
N 51000 49600 51000 50100 4
N 50100 41900 50100 41500 4
N 50100 41500 51100 41500 4
N 51100 41500 51100 42100 4
C 42500 46600 1 90 0 resistor-1.sym
{
T 42100 46900 5 10 0 0 90 0 1
device=RESISTOR
T 42200 47100 5 10 1 1 180 0 1
refdes=R5
}
N 42400 48000 42400 47500 4
N 42400 46600 42400 46100 4
C 46900 49000 1 0 0 resistor-1.sym
{
T 47200 49400 5 10 0 0 0 0 1
device=RESISTOR
T 47100 48700 5 10 1 1 0 0 1
refdes=R29
T 47100 48500 5 10 1 1 0 0 1
value=10M
}
C 46900 44900 1 0 0 resistor-1.sym
{
T 47200 45300 5 10 0 0 0 0 1
device=RESISTOR
T 47100 44600 5 10 1 1 0 0 1
refdes=R30
T 47100 44400 5 10 1 1 0 0 1
value=10M
}
C 46600 49200 1 270 0 gnd-1.sym
C 46600 45100 1 270 0 gnd-1.sym
C 52300 45400 1 0 0 AD625-1.sym
{
T 52925 46350 5 8 0 0 0 0 1
device=LM741
T 52700 46900 5 10 1 1 0 0 1
refdes=U5
}
C 53000 43100 1 0 0 resistor-1.sym
{
T 53300 43500 5 10 0 0 0 0 1
device=RESISTOR
T 53400 42800 5 10 1 1 0 0 1
refdes=R22
T 53400 42600 5 10 1 1 0 0 1
value=100K
}
N 52500 42800 52500 43300 4
C 48300 48000 1 270 0 resistor-1.sym
{
T 48700 47700 5 10 0 0 270 0 1
device=RESISTOR
T 48200 48800 5 10 1 1 0 0 1
refdes=R31
T 48200 48600 5 10 1 1 0 0 1
value=10K
}
C 45900 41800 1 0 0 74157-2.sym
{
T 46525 42750 5 8 0 0 0 0 1
device=74LS157
T 46000 43800 5 10 1 1 0 0 1
refdes=U3
}
N 43300 41800 43300 41200 4
N 43300 41200 42900 41200 4
C 42000 41100 1 0 0 resistor-1.sym
{
T 42300 41500 5 10 0 0 0 0 1
device=RESISTOR
T 42200 40800 5 10 1 1 0 0 1
refdes=R32
T 42200 40600 5 10 1 1 0 0 1
value=10K
}
N 42000 41200 41600 41200 4
T 44700 50000 9 10 1 0 0 0 2
13
PD2
T 49100 49800 9 10 1 0 0 0 2
19
PD5
T 48400 49800 9 10 1 0 0 0 2
17
PD4
T 45500 50000 9 10 1 0 0 0 2
9
PB4