IBM Car Amplifier 7220 Instrukcja Użytkownika Pobierz pdf (Strona 61)

5-21

Chapter 5, FRONT PANEL OPERATION

Figure 5-15, Sensitivity Control - Voltage Input Mode

When set to current input mode, the instrument’s full-scale current sensitivity may be

set to any value between 20 fA and 1 µA (wide bandwidth mode) or 20 fA and 10 nA

(low-noise mode), in a 1-2-5 sequence.

Figure 5-16, Sensitivity Control - Wide Band Current Input Mode

Figure 5-17, Sensitivity Control - Low-noise Current Input Mode

1 2 ... 56 57 58 59 60 61 62 63 64 65 66 ... 154 155

Model 7220 1
FCC Notice 2
Declaration of Conformity 2
Table of Contents 3
TABLE OF CONTENTS 4
Appendix A, Specifications 6
Introduction 9
Chapter 1, INTRODUCTION 10
Installation & 13
Initial Checks 13
2.2 Initial Checks 15
Technical Description 17
3.2.02 Signal-Channel Inputs 18
3.2.04 AC Gain 20
3.2.05 Anti-Aliasing Filter 20
3.2.07 Reference Channel DSP 22
3.2.08 Internal Oscillator 23
3.2.09 Demodulator DSP 23
3.3 Accuracy 24
3.5 Dynamic Reserve 25
3.8 Output Channel Filters 27
3.10 Noise Measurements 30
3.11 Power-up Defaults 30
3.12 Auto Functions 30
3.12.02 Auto-Sensitivity 31
3.12.03 Auto-Phase 31
3.12.04 Auto-Offset 31
3.12.05 Auto-Measure 32
3.12.06 Default Setting 32
Front and Rear Panels 33
4.1.03 REF IN Connector 34
4.1.05 MENU Key 36
4.1.06 90º Key 37
4.1.07 SET Key 37
4.2 Rear Panel 38
4.2.11 CH1, CH2 Connectors 40
4.2.12 TRIG Connector 40
4.2.13 ADC1, ADC2 Connectors 40
4.2.14 DAC1, DAC2 Connectors 40
Front Panel Operation 41
5.2.01 Input Setup Menu 42
5.2.02 Reference Setup Menu 44
5.2.03 Output Setup Menu 45
5.2.04 Control Options Menu 48
AUTOMATIC 49
EXTERNAL 50
Contrast 50
5.2.06 RS232 Setup 1 Menu 51
5.2.07 RS232 Setup 2 Menu 52
5.2.08 RS232 Setup 3 Menu 53
5.2.09 GPIB Setup 1 Menu 54
5.2.10 GPIB Setup 2 Menu 55
5.2.12 Control Setup Menu 57
5.3 Auto Functions Menu 58
AUTO OFFSET 59
AUTO MEASURE 59
Figure 5-18, AC Gain Control 62
Figure 5-37, Ratio Output 72
Figure 5-38, Log Ratio Output 72
ADC1 Volts 73
ADC2 Volts 73
Computer Operation 77
6.3 RS232 and GPIB Operation 78
6.3.03 Choice of Baud Rate 79
6.3.08 Handshaking and Echoes 81
6.3.09 Terminators 82
6.3.10 Command Format 82
6.3.11 Delimiters 83
6.3.12 Compound Commands 83
6.3.14 Service Requests 85
6.4 Command Descriptions 86
6.4.02 Reference Channel 89
6.4.05 Instrument Outputs 92
6.4.06 Internal Oscillator 95
6.4.07 Auxiliary Outputs 96
6.4.08 Auxiliary Inputs 97
Chapter 6, COMPUTER OPERATION 100
6.5 Programming Examples 106
6.5.05 Transient Recorder 108
Storage and Frequency Sweep 109
Specifications 111
Reference Channel 112
Oscillator 113
Auxiliary Inputs 114
Data Storage 115
Interfaces 115
Power Requirements 115
Appendix A, SPECIFICATIONS 116
B.1 RS232 Connector Pinout 117
Appendix B, PINOUTS 118
Demonstration 119
Programs 119
Cable Diagrams 123
Appendix D, CABLE DIAGRAMS 124
Alphabetical Listing of 125
Commands 125
16,000,000 126
((25 × n) + 157) 126
((25 × n) + 1031) 126
The value of n 144
1 Enables offset facility 144
Default Settings 147
Appendix F, DEFAULT SETTINGS 148
Operating environment 2-1 151
X[.] command 6-16, E-20 153
Y[.] command 6-16, E-20 153
WARRANTY 155

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