DS1045

3 of 6

DELAY VS. PROGRAMMED VALUE Table 2

PART NUMBER

OUTPUT DELAY VALUE

DS1045-3

9

12

15

18

21

24

27

30

33

36

39

42

45

48

51

54

DS1045-4

9

13

17

21

25

29

33

37

41

45

49

53

57

61

65

69

DS1045-5

9

14

19

24

29

34

39

44

49

54

59

64

69

74

79

84

PROGRAM VALUES FOR EACH DELAY VALUE

A0 OR B0

0

1

0

1

0

1

0

1

0

1

0

10101

A1 OR B1

0

0

1

1

0

0

1

1

0

0

1

10011

A2 OR B2

0

0

0

0

1

1

1

1

0

0

0

01111

A3 OR B3

0

0

0

0

0

0

0

0

1

1

1

11111

DS1045 TEST CIRCUIT Figure 2

TEST SETUP DESCRIPTION

Figure 2 illustrates the hardware configuration used for measuring the timing parameters of the DS1045.

The input waveform is produced by a precision pulse generator under software control. Time delays are

measured by a time interval counter (20 ps resolution) connected to the output. The DS1045 parallel

inputs are controlled by an interface to a central computer. All measurements are fully automated with

each instrument controlled by the computer over an IEEE 488 bus.