Theory of Operation Chapter 3
SCXI-1120 User Manual 3-12 © National Instruments Corporation
Table 3-2. Calibration Potentiometers Reference Designators
Input Channel Amplifier Channel
Number Input Null Output
Null
0 R8 R24
1 R10 R25
2 R12 R26
3 R14 R27
4 R16 R28
5 R18 R29
6 R20 R30
7 R21 R31
Analog Output Circuitry
Figure 3-6 shows the SCXI-1120 analog output circuitry.
AB0
Switch
Buffer MCH0+
Output
Mux
Channel 0
Channel 7 MCH0-
MCH1+From
Channel 1
From
Channel 6
MCH1-
DTEMP
MCH6-
MCH6+
W41
MCH7-
MTEMP
Analog
Reference
SCXIbus
Rear Signal Connector
Output
Stage
Control
•
•
•
Output Stage and
Hardware Scan
Control
•
•
•
From
Channel 7 MCH7+
>>
•
•
•
Figure 3-6. Analog Output Circuitry