Keithley 775A Manuals

Manuals and User Guides for Keithley 775A. We have 2 Keithley 775A manuals available for free PDF download: Instruction Manual

Keithley 775A Instruction Manual

Keithley 775A Instruction Manual (134 pages)

Programmable Counter / Timer

Brand: Keithley | Category: Cash Counter | Size: 5.74 MB

Table of Contents
6
SECTION L-GENERAL INFORMATION
14
Model775 Features
14
- Warranty Information
  14
Introduction
14
Manual Addenda
14
- Safety Symbols and Terms
  14
- Inspection
  15
Using the Model 775 Manual
15
Accessories
15
Section Z-Basic Counter/Timer Operation
16
Introduction
16
Controls
19
Terminals
20
- Display and Indicators
  21
Tiltbail
21
Rear Panelfamiliarization
21
- Connectors and Terminals
  21
- Line Voltage Selector Switch
  21
- IEEE-488 Address Switches
  21
- Line Fuse
  21
- Power-Up Procedure
  21
Displaymessages
22
- No Option Message
  22
- Control Selection
  23
- Function
  23
  - Selecting Gatetime
    23
  - User Gate Function
    24
  - Using Delay
    24
  - User Delay Function
    25
  - Selecting Measurement Rate
    25
  - Selecting the Number of Displayed Digits
    25
- Input Condition Controls Setting
  26
  - Setting Trigger Levels
    26
- Arming
  28
- Continuous Arming
  28
  - Front Panel Arming
    28
  - Alarm Conditions
    28
- Applications
  28
Alarm Condition
28
Using Delay to Measure Contact Dwell Time
30
- Section 3-Ieee-488 Operation
  32
- Introduction
  32
- Bus Description
  32
Ieee-488 Bus Lines
33
- Bus Management Lines
  33
Handshakelines
33
- Data Lines
  34
Bus Commands
34
- Commands
  36
- Addressed Commands
  36
- Unaddressed Commands
  36
- Device-Dependent Commands
  36
Command Codes
36
- Command Sequence
  37
  - Addressed Command Sequence
    37
- Hardware Considerations
  37
- Hexadecimal and Decimal Command Codes
  37
Command Codes
38
Busconnections
39
IEEE-488 Connections
40
Rear Panel of Model 775 Showing IEEE Connector
40
Contact Assignments
40
Primary Address Programming
41
Software Considerations
41
BASIC Statements
42
Interface Function Codes
43
- Model 775 Interface Commandr
  44
General Bus Command Programming
44
Ren=Remote Enable
44
- General Bus Commands
  44
IFC (Interface Clear)
45
- GTL (Go to Local)
  45
- Dcl(Device Clear)
  46
Default Conditions (Status Upon Power up or after SDC or DCL)
46
SDC (Selective Device Clear)
46
GET (Group Execute Trigger)
46
Serial Polling (SPE, SPD)
47
Device-Dependent Command Programming
47
Device-Dependent Command Summary
48
Execute (X)
50
Function(F)
50
Channels A, D Coupling (AC, BC)
50
Channels A, B Attenuator (AA, BA)
51
Channels A, B Filter (AF, BF)
51
Channels A, B Slope (AS, BS)
51
Channels A, B Trigger Level (AL, BL)
51
Rate Commands
52
Rate(S)
52
Gate Time(G)
53
Delay Time(W)
53
Delay(I)
54
Displayed Digits(N)
54
Triggering (T)
54
Eoi(K)
55
SRQ Mode (M) and Serial Poll Status Byte Format
55
- SRQ Mask Legal Commands
  56
- Status Byte Interpretation
  57
Self-Test (J)
58
Reading from the Model 775
58
Data String Format
59
Data Control Commands (B)
59
Status Word (U)
60
Terminator (Y)
61
- Status Word Format
  61
Prefix(P)
62
- Dump Mode (53 Rate Mode)
  62
- Iddcerror
  65
- IDDCO Error
  65
IEEE-488 Display Error Messages
66
Section G-Performance Verification
68
- Introduction
  68
- Environmental Conditions
  68
Recommended Test Eouifment
68
Initial Conditions
68
Verification Procedures
68
- Channels A, B and C Inputs Sensitivity
  69
Period Measurement Accuracy Check
69
Section 5-Theory of Operation
72
Introduction
72
Overall Functional Description
72
- Input Circuits a and B
  74
- Input C~Cuitc
  74
- 1Omhz Standard Reference Oscillator
  74
- 1Omhz ICXO Reference Oscillator
  74
- 100Mhzmultiplier
  74
- Measurement Section
  75
Frequency a Measurement Block Diagram
77
Frequency C Measurement Block Diagram
79
Period a Measurement Block Diagram
80
Time Interval A-B Measurement Block Diagram
81
Digital Circuitry
84
- Microcomputer Block Diagram
  84
- Memory Mapping
  84
- Address Decoding
  84
Keyboard/Display Interface
85
- IEEE Interface
  85
Section 6-Maintenance
86
Introduction
86
Line Voliage Selection
86
- Fuse Replacement
  86
Using an External Timebase
87
Model 7751 Installation
88
Model 7751 Channel C Option Installation
88
Model 7752 Installation
89
- Calibration
  90
  - Environmental Conditions
    90
  - Warm-Up Period
    90
  - Recommended Test Equipment
    90
- Recommended Test Equipment for Calibration
  90
Model 775 Calibration Adjustments
91
- Multiplier Adjustment
  92
Trigger Level Adjustment
92
- Channels a and B Sensitivity Adjustment
  92
Inputs a and B Attenuator Compensation
92
Time Base Adjustment (Optional 1 PPM Tie Base)
92
Special Handling of Seatic Sensitive Devices
93
Disassembly Instruci'ions
93
- Static Sensitive Device
  93
Model 775 Exploded View
94
- Recommended Test Equipment
  95
Power-Up Self Diagnostics
95
- Power Supply Checks
  95
- Specifications
  95
- Reference Oscillator and Clock Checks
  96
Digital Circuitry and Display Checks
96
Trigger Level Checks
96
- Measurement Section Checks
  96
- Signal Conditioning Checks
  96
Multiplier Circuit Checks
96
Measuring Section Circuit Checks
99
Section 7-Replaceable Parts
100
- Introduction
  100
Parts List
100
Ordering Information
100
Factory Service
100
Schematic Diagram and Component Location Drawings
100
Model 7751, Component Location Drawing
120
Model 7752, Component Location Drawing
122
- Model 775 Mechanical Parts List
  126
- Appendix..
  130
- Index
  130

Keithley 775A Instruction Manual (132 pages)

Programmable Counter/Timer

Brand: Keithley | Category: Timer | Size: 6.95 MB

1-Generai Information Section M

5
- External Gate
  3
  - Table of Contents
    5
- Operation
  5
- Address
  5
- Device-Dependent
  6
- Sensitive Devices
  8
- Manual Addenda
  13
- Safety Symbols and Terms
  13
  - Symbols and
    13
- Inspection
  14
- Accessories
  14
- FRONT PANEL Famillarlzatios\I
  18
  - Controls
    18
- 2.3 Display and Indicators
  18
- Rear Panel Familiarization
  20
- 3 1 Connectors and Terminals
  20
- Power-Up Procedure
  20
- Display Messages
  21
- Control Selection
  22
- 6.2 Selecting Gate Time
  22
  - User Gate Function
    23
  - User Delay Function
    24
  - Digits
    24
- Arming
  24
  - Continuous Arming
    27
  - Front Panel Arming
    27
  - External Arming
    27
  - Alarm Conditions
    27
- Applications
  27
- Introduction
  31
- Bus Description
  31
  - Bus Lines
    32
  - Serial Polling
    46
  - On/Off
    50
    
    Srq
    55
    
    Byte
    55
  - Self Test
    55
  - Spd
    55
  - Period Average
    63
  - Power Power
    74
  - Period
    93
  - Group
    129
Line Voltage

130
- Line Voltage
  131

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Keithley 775A Manuals

Keithley 775A Instruction Manual (134 pages)

Table of Contents

Keithley 775A Instruction Manual (132 pages)

Table of Contents

1-Generai Information Section M

Line Voltage

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