External Connectors - Agilent Technologies 8453 Operator's Manual

Table 9
Theory of Operation

External Connectors

External Connectors
GPIB Connector
The GPIB core design is used as talker/listener and a controller which is
usually the computer with Agilent ChemStation software loaded. It supports
all GPIB functionality except passing control between different devices. The
connector needs to be activated and configured by the 8-bit configuration
switch next to the GPIB connector. For switch settings, refer to the
Installing Your UV-Visible Spectroscopy System handbook.
APG Remote Connector
Remote control allows easy connection between single instruments or
systems to ensure coordinated analysis with simple coupling requirements.
A subminiature D connector is used. The module provides one remote
connector which is inputs/outputs (wired-or technique).
To provide maximum safety within a distributed analysis system, one line is
dedicated to SHUT DOWN the system's critical parts in case any module
detects a serious problem. To detect whether all participating modules are
switched on or properly powered, one line is defined to summarize the
POWER ON state of all connected modules. Control of analysis is maintained
by signal readiness READY for next analysis, followed by START of run and
optional STOP of run triggered on the respective lines. In addition PREPARE
and START REQUEST may be issued.
APG Remote Signal Distribution
Pin Signal
1 DGND
2 PREPARE
3 START
56
Function
Digital ground
(L) Request to prepare for analysis (e.g. calibration,
detector lamp on). Receiver is any module performing
preanalysis activities.
(L) Request to start run / timetable. Receiver is any module
performing runtime controlled activities.