Sensoray 618 - Manual (Page 2)

Sensoray Model 618/619 Smart A/D Table of Contents
Table of Contents
Basics.........................................1
Introduction ...............................2
Configuration.............................3
3.1 Signal Conditioning Circuit (SCC). . . 3
3.1.1 Side Effects
3.1.2 Recommended Settings
3.2 Shunt Mapping . . . . . . . . . . . . . . . . . . . 3
3.4 Reset State. . . . . . . . . . . . . . . . . . . . . . . 4
3.5 Fault Indicator . . . . . . . . . . . . . . . . . . . 4
Sensor Connections ...................5
4.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . 5
4.1.1 Termination Boards
4.1.2 Sensor Hot Insertion
4.2 Connector Pinouts . . . . . . . . . . . . . . . . 5
4.2.1 Reference Junction Sensor
4.3 Sensor Channels . . . . . . . . . . . . . . . . . . 5
4.3.1 Sense Terminals
4.3.2 Excitation Terminals
4.3.3 Shield Terminal
4.4 RTDs, Resistors and Thermistors. . . . 6
4.4.1 Two-wire Circuit
4.4.2 Three-wire Circuit
4.4.3 Four-wire circuit
4.4.4 Recommended Practice
4.5 DC Voltage Sources . . . . . . . . . . . . . . . 7
4.5.1 Recommended Practice
4.6 Thermocouples . . . . . . . . . . . . . . . . . . . 7
4.6.1 Recommended Practice
4.7 Strain and Pressure Gages . . . . . . . . . 7
4.7.1 Recommended Practice
4.8 4-to-20 mA Current Loops . . . . . . . . . 8
Programming.............................9
5.1 Standardized Interface . . . . . . . . . . . . 9
5.1.1 Distribution Diskette
5.1.2 API Functions
5.1.3 Channel Numbering Convention
5.2 Board Configuration Functions . . . . . 9
5.2.1 ResetBoard
5.2.2 GetFaultFlags
5.2.3 GetFWVersion
5.2.4 SetHiSpeedMode
5.2.5 SetReject50Hz
5.3 Channel Configuration Functions . . . 10
5.3.1 SetSensorType
5.3.2 SetFilter
5.3.3 SetFailMode
5.4 Sensor Acquisition Functions . . . . . . . 11
5.4.1 GetAmbientTemp
5.4.2 GetSensorData
5.4.3 GetAllSensors
5.5 Alarm Functions. . . . . . . . . . . . . . . . . . 12
5.5.1 Alarm States
5.5.2 SetAlarmLimits
5.5.3 SetAlarmEnable
5.5.4 GetAlarms
5.6 Strain/Pressure Gage Functions . . . . . 13
5.6.1 SetGageZero
5.6.2 SetGageSpan
5.6.3 SetGageTare
5.6.4 GetGageCal
5.6.5 SetGageCal
Calibration ................................ 15
6.0.1 User-supplied References
6.0.2 Calibrate
6.1 Calibration Procedure . . . . . . . . . . . . . 15
6.1.1 Order of Calibration
6.1.2 Calibration Process
Theory of Operation.................. 16
7.1 Firmware. . . . . . . . . . . . . . . . . . . . . . . . 16
7.1.1 Digitizer
7.1.2 Cruncher
7.1.3 Command Processor
7.2 Analog Circuits. . . . . . . . . . . . . . . . . . . 16
7.2.1 Measurement Section
7.2.2 Excitation Section
Timing ....................................... 17
8.1 Slot Time . . . . . . . . . . . . . . . . . . . . . . . . 17
8.2 Update Rate . . . . . . . . . . . . . . . . . . . . . 17
8.2.1 Primary Influences
8.2.2 Secondary Influences
8.3 Data Age . . . . . . . . . . . . . . . . . . . . . . . . 18
8.3.1 Example
8.4 Communication Latency . . . . . . . . . . . 18
Specifications ............................ 19
9.1 General Specifications . . . . . . . . . . . . . 19
9.2 Sensor Specifications . . . . . . . . . . . . . . 20