Level Arming

52

ARMLEVEL.C

52

Comments

52

Pre- and Post-Arm Readings

53

PREPOST.C

53

Comments

53

Specifying a Sample Rate

54

SAMPLE.C

54

Comments

54

Dual Rate Sampling

55

DUALSAMP.C

55

Comments

55

Using Multiple Digitizers

56

MULT_AD.C

57

Comments

58

Using the Packed Data Format

59

Comments

62

VME Bus Data Transfers

63

VME_REAL.C

63

Comments

66

Comments

71

VME Bus Data Transfers Using an Embedded Controller

72

SEGTST16.CPP

72

SEGTST32.CPP

74

SEGTST16.CPP and SEGTST32.CPP #include Files

77

Local Bus Data Transfers

83

LOCAL_AD.C

83

Comments

87

LBUS2PST.C

88

Comments

92

LBUSAUTO.C

93

Comments

99

Using the Digitizer Status Registers

101

STATUS.C

101

Comments

102

Chapter 3. Understanding the Digitizer

103

Chapter Contents

103

HP E1429 Digitizer Block Diagram

103

The Message and Register Interfaces

105

Digitizer Command Paths

105

The Digitizer Input Section

106

SCPI Command Control

106

Setting the Signal Range

109

Arming and Triggering

111

The ARM-TRIG State Diagram

112

Arming the Digitizer

113

Triggering the Digitizer

121

The Sample Period

122

The Digitizer Reference Clock

124

The Analog-to-Digital Converter

129

Data Flow, Storage, and Conversions

129

Digitizer Data Flow

129

2 HP E1429A/B Digitizer User’s Manual

Contents

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HP manual HP E1429A/B Digitizer User’s Manual Contents