Oxford Instruments ILM200, Руководство оператора

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6.5 Use with Oxford Instruments ISOBUS...................................................... 23
6.6 The GPIB Interface .................................................................................... 24
6.6.1
Sending Commands via the GPIB........................................... 25
6.6.2 Accepting Responses via the GPIB ......................................... 25
6.6.3 The Status Byte, Use of a Serial Poll ...................................... 25
6.6.4 Use of the Service Request Line ............................................. 26
6.6.5 Use of the Device Clear Function........................................... 26
6.6.6 Use of the Interface Clear (IFC) Function .............................. 26
6.6.7 Non-Implemented Features of the GPIB ............................... 26
6.6.8 Compatibility with IEEE-488.2................................................ 27
6.6.9 Use of the GPIB Interface as a GATEWAY to ISOBUS ........... 27
6.6.10 Writing a "Rugged" GPIB Control Program.......................... 27
7 Command List ......................................................................................................... 28
8 Command Syntax .................................................................................................... 29
8.1
User Commands........................................................................................ 29
8.2 Interpreting the Status Message ............................................................. 31
8.2.1
Example Sequence.................................................................. 33
9 Configuration and Test Mode................................................................................ 35
9.1
Use of Test Mode...................................................................................... 35
9.2 Entering Test Mode .................................................................................. 35
9.3 Test t.01 Testing the Display and Relays ................................................. 35
9.4 Test t.02 Testing the Keys ....................................................................... 35
9.5 Test t.03 Setting the GPIB Address ......................................................... 36
9.6 Test t.04 The Diagnostic Front Panel Display......................................... 36
9.7 Test t.05 Configuring the Channels........................................................ 36
9.8 Test t.06 Calibrating the Current Sources .............................................. 37
9.9 Test t.07 Setting Probe Active Length.................................................... 38
9.10 Test t.08 Setting Helium Probe Currents................................................ 38
9.11 Test t.09 Setting Helium Probe Pulse Widths......................................... 39
9.12 Test t.10 Setting Helium Probe Sample Rates........................................ 39
9.13 Test t.11 Setting Full, Fill and Low Thresholds....................................... 39
9.14 Test t.12 Setting Stepper Motor Operating Mode ................................ 40
9.15 Test t.13 Manual Adjustment of Needle Valve...................................... 40
9.16 Test t.14 Setting Helium Probe Wire Resistivity..................................... 40
9.17 A Final Reminder ...................................................................................... 40
10 Servicing .................................................................................................................. 41
10.1
Safety ........................................................................................................ 41
10.2 Circuit Description .................................................................................... 41
10.3 Reset Procedures....................................................................................... 42
10.3.1
Entry to Test Mode ................................................................. 42
10.3.2 Two Button Reset ................................................................... 43
10.3.3 Three Button Reset................................................................. 43