Contents
DAQCard-1200 User Manual viii © National Instruments Corporation
Figure 3-1. DAQCard-1200 I/O Connector Pin Assignments.................................3-2
Figure 3-2. DAQCard-1200 Instrumentation Amplifier..........................................3-5
Figure 3-3. Differential Input Connections for Grounded Signal Sources.............. 3-9
Figure 3-4. Differential Input Connections for Floating Sources............................3-10
Figure 3-5. Single-Ended Input Connections for Floating Signal Sources .............3-12
Figure 3-6. Single-Ended Input Connections for Grounded Signal Sources........... 3-13
Figure 3-7. Analog Output Signal Connections...................................................... 3-14
Figure 3-8. Digital I/O Connections........................................................................3-16
Figure 3-9. Mode 1 Timing Specifications for Input Transfers...............................3-19
Figure 3-10. Mode 1 Timing Specifications for Output Transfers............................3-20
Figure 3-11. Mode 2 Timing Specifications for Bidirectional Transfers.................. 3-21
Figure 3-12. EXTCONV* Signal Timing................................................................. 3-22
Figure 3-13. Posttrigger DAQ Timing.......................................................................3-23
Figure 3-14. Pretrigger DAQ Timing........................................................................ 3-24
Figure 3-15. Interval-Scanning Signal Timing..........................................................3-25
Figure 3-16. EXTUPDATE* Signal Timing for Updating DAC Output..................3-26
Figure 3-17. Event-Counting Application with External Switch Gating ..................3-27
Figure 3-18. Frequency Measurement Application...................................................3-29
Figure 3-19. General-Purpose Timing Signals..........................................................3-30
Figure 4-1. DAQCard-1200 Block Diagram...........................................................4-1
Figure 4-2. PC Card I/O Interface Circuitry Block Diagram.................................. 4-2
Figure 4-3. Timing Circuitry...................................................................................4-4
Figure 4-4. Analog Input Circuitry..........................................................................4-6
Figure 4-5. Analog Output Circuitry.......................................................................4-11
Figure 4-6. Digital I/O Circuitry..............................................................................4-13
Tables
Table 2-1. Analog I/O Settings...............................................................................2-3
Table 2-2. Analog Input Modes for the DAQCard-1200....................................... 2-4
Table 3-1. Bipolar and Unipolar Analog Input Signal Range Versus Gain........... 3-5
Table 3-2. Recommended Input Configurations for Ground-Referenced
and Floating Signal Sources..................................................................3-7
Table 3-3. Port C Signal Assignments...................................................................3-17
Table 4-1. Analog Input Settling Time Versus Gain..............................................4-10
Table 4-2. DAQCard-1200 Maximum Recommended Data Acquisition Rates.... 4-10
Table C-1. DAQCard-1200 Power-Management Modes .......................................C-1