Signal Output

Instrument network (INET)

Instrument network (INET)

The Instrument Network (INET) is a path for various devices to communicate with each other (data and/or commands). INET permits a group of devices (consisting of a controller, and some number of data Producers and data Consumers) to function as a single, unified system.

INET permits:

CManagement of active workspace (described below) among instruments, a controller, and storage and print media.

CSharing of run and readiness conditions among INET instruments.

CSharing of setpoint and parameter information among INET instruments.

CAutomation of data collection, sample tracking, and report generation.

Note: In default operation the HP 5890 supplies only Signal 1 data to the INET loop. That is, HP 5890 data supplied to the INET loop is defined according to the assignment made via SIG 1 . To use Signal 2 data instead, signal reassignment is done at the HP 5890.

The controller

INET is a series•connectedloop of devices, with the output of each device connected to the input of the next. A message sent from a particular device travels around the loop, returning to the same instrument as confirmation of transmission. Thus, the loop must be continuous, and all devices must be on for the loop to function.

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