Measurement Computing Data Translation DT3034 User Manual page 71

Chapter 6
This chapter describes the analog input, analog output, digital I/O, counter/timer, and
synchronous features of the DT3034 board. To frame the discussions, refer to the block
diagram shown in
Ext A/D Clock
Ext A/D TTL Trig
Ext D/A Clock
Ext D/A TTL Trig
Analog Trigger
20 MHz Clock
Ext Analog Trigger
Analog In
Ch. Sel
Gain Sel
A/D Clk
DIO Ports
Input Sel
70
Figure 20. Note that bold entries indicate signals you can access.
Trigger/Clock
Logic
A/D Trig
A/D Counter,
A/D Clk
24-bits
D/A Counter
D/A Clk
24-bit
TScan Counter
24-bit
32 Channel Mux
Gain Amp
(1, 2, 4, 8)
16-bit ADC
MUX
Tristate Buffers
Compare
1 kSample
Input FIFO
Analog Trigger
PCI Bus Interface
PCI Bus
Figure 20: Block Diagram of the DT3034 Board
A/D Trig
Buffer
A/D Clk
1 K Entry
CGL FIFO
CGL Reg.
Channel
Parameter
Reg.
4K Output
FIFO
16-bit
DAC
16-bit
DAC
D/A Clk
8-bit
Bidirectional
DAC
8-bit Latch
Bidirectional
8-bit Latch
4 User
20
Counter/
MHz Timers,
Clk 16-bit ea.
A/D Trig Out
A/D Clk Out
Ch. Sel
Gain Sel
Input Sel
Output FIFO
Counter
Analog Out 1
Analog Out 0
DIO Bank B [7:0]
DIO Bank A [7:0]
User Clk [3:0]
User Gate [3:0]
User Out [3:0]