Signal Output

Instrument network (INET)

INET operation

In using the INET function, chromatographic parameters are entered normally through the HP 5890 keyboard. Integration parameters are entered at the controller. Parameters for other devices on the INET loop may be entered at the controller, or at their own keyboards. Collectively, the separate sets of parameters constitute a single set of parameters for an analysis.

The intent here is to discuss INET operation only from the point of view of the HP 5890. For specific information regarding INET loop control (configuration, workfile storage and recall, etc), consult the appropriate operation manuals for the INET controller device. Also consult appropriate manual(s) for other devices (sampler/event control module, etc) configured in the loop.

Typical displays occurring when the HP 5890 is under INET control are shown in Figure 5•7.

Figure 5-7

INET Displays

 

 

 

 

 

 

 

ACTUAL

SETPOINT

 

 

 

 

 

UNDER

REMOTE

CONTROL

 

 

 

ACTUAL

SETPOINT

 

 

 

 

 

 

SYSTEM

NOT

READY

 

 

 

 

ACTUAL

SETPOINT

 

 

 

 

 

SETPOINT

FILE

LOADED

Typical INET Loop Displays

CKeyboard setpoint entry is not allowed at the HP 5890 while a workfile or method is stored or listed at the controller: UNDER REMOTE CONTROL is displayed if an entry is attempted.

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