Agilent Technologies E1465A Manuale Utente Scaricare il pdf (Pagina 102)

102 Relay Life Appendix D

• Contact Resistance Maximum Value. As the relay begins to wear

out, its contact resistance increases. When the resistance

exceeds a predetermined value, the relay should be replaced.

• Contact Resistance Variance. The stability of the contact resistance

decreases with age. Using this method, the contact resistance is

measured several (5-10) times, and the variance of the

measurements is determined. An increase in the variance

indicates deteriorating performance.

• Number of Relay Operations. Relays can be replaced after a

predetermined number of contact closures. However, this method

requires knowledge of the applied load and life specifications for

the applied load.

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Agilent Technologies 1
E1465A/E1466A/E1467A 1
Relay Matrix Switch Modules 1
User’s Manual 1
Contents 3
Safety Symbols 8
WARNINGS 8
Documentation History 8
DECLARATION OF CONFORMITY 9
Getting Started 11
TERMINAL MODULEMATRIX MODULE 12
Addressing the 15
Example: Closing 16
Relays (BASIC) 16
Relays (Turbo C) 17
Chapter 2 19
Using This Chapter 19
WARNINGS and CAUTIONS 19
Configuring the Switch Module 20
Setting the Logical 21
Address Switch 21
Setting the Interrupt 21
Installing the 23
Switch Module in a 23
Mainframe 23
• Terminal Module Connectors 24
• Wiring Terminal Modules 24
Terminal Module 24
Connectors 24
Daisy Chain Rows 26
Rows (00-07) 26
Columns (00-15) 26
Columns (16-31) 26
Wiring the Terminal 27
Attaching the 29
Terminal Modules 29
Configuring Larger Matrixes 30
E1465A TERMINAL MODULES 31
Creating a 4x256 32
Creating an 8x96 33
Creating Larger 34
Matrixes with 34
Multiple Mainframes 34
Using the Matrix Modules 35
Example: Matrix 36
Identification 36
(TURBO C) 37
Switching Channels 38
Scanning Channels 39
Example: Scanning 41
Using Trig In/Out 41
Ports (BASIC) 41
Querying Matrix Modules 42
Using the Scan Complete Bit 42
Example: Using the 43
Scan Complete Bit 43
Saving and Recalling States 44
Detecting Error Conditions 45
Synchronizing Matrix Modules 46
Understanding Matrix Modules 47
Chapter 4 49
Command Types 49
SCPI Command Reference 51
Subsystem Syntax ABORt 52
ARM:COUNt 53
ARM:COUNt? 54
DISPlay:MONitor:CARD 55
DISPlay:MONitor[:STATe] 56
INITiate 57
INITiate:CONTinuous? 58
INITiate[:IMMediate] 58
OUTPut:EXTernal[:STATe] 59
OUTPut:EXTernal[:STATe]? 60
OUTPut[:STATe] 60
OUTPut[:STATe]? 61
OUTPut:TTLTrgn[:STATe] 61
OUTPut:TTLTrgn[:STATe]? 62
[ROUTe:] 63
[ROUTe:]CLOSe? 64
Parameters 65
Comments Opening Channels: 65
[ROUTe:]OPEN? 66
[ROUTe:]SCAN 66
Subsystem Syntax STATus 68
Output Queue 69
Status Byte Register 69
OPERation Status Register 69
STATus:OPERation:CONDition? 70
STATus:OPERation:ENABle 70
STATus:OPERation:ENABle? 70
STATus:OPERation[:EVENt]? 71
STATus:PRESet 71
SYSTem:CDEScription? 72
SYSTem:CPON 73
SYSTem:CTYPe? 73
SYSTem:ERRor? 74
TRIGger[:IMMediate] 75
TRIGger:SOURce 76
TRIGger:SOURce? 77
SCPI Commands Quick Reference 78
Matrix Modules Specifications 81
Register-Based Programming 83
Register Descriptions 86
Reading the 87
Status/Control Register 87
Writing to the 87
Relay Control 88
Register 88
Programming Examples 90
Example: Reading 91
(C/HP-UX) 91
Example: Making 92
Measurements 92
Channels (BASIC) 95
Channels (C/HP-UX) 96
Matrix Modules Error Messages 99
Error Messages 100
Relay Life 101
R (continued) 105

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