National Instruments PCI-4452 - Manual (Page 19)

Chapter 3 Hardware Overview
PCI-4451/4452 User Manual 3-2 © National Instruments Corporation
Figure 3-2. Analog Function Block Diagram
A
C/DC
Coupling
MUX0
INPUT/CAL
MUX0
0 dB/20 dB
A TTEN MUX0
A
C/DC
Coupling
MUX1
INPUT/CAL
MUX1
0 dB/20 dB
A TTEN MUX1
ENABLE1
Analog Bus
Analog Mezzanine Bus (to Digital Section)
Ser
ial Data Manager
DIFF Gain AMP
ADC0
DIFF Gain AMP
ADC1
DIFF Gain AMP
ADC2
†
A
C/DC
Coupling
MUX2
INPUT/CAL
MUX2
0 dB/20 dB
A TTEN MUX2
DIFF Gain AMP
ADC3
†
A
C/DC
Coupling
MUX3
INPUT/CAL
MUX3
0 dB/20 dB
A TTEN MUX3
Analog Ov
err
ange
Detect
Gain/Offset Calibr
ation
A
C/DC MUX Control
INPUT/CAL
MUX Control
A TTEN MUX Control
Gain Control
ADC Control ADC Cloc
k
Manager
D
A
C Control
Atten
uation
Control
Output Enab
le
DIFF A
TTEN
AMP
D
A
C0
††
ENABLE0
Analog Bus
DIFF A
TTEN
AMP
D
A
C1
††
Gain/Offset Calibr
ation
Gener
al Control
Digital
Ov
err
ange
Detect
D
A
C Cloc
k
Manager
EEPR
OM
†
PCI-4452 only
††
PCI-4451 only
LP Filter LP Filter LP Filter LP Filter
T rigger Control
User.book Page 2 Tuesday, April 14, 1998 10:20 AM