3 connection of other devices – Metrohm 761 Compact IC User Manual

Page 62

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2 Installation

761 Compact IC

52

5 Settings in the «761 Compact IC» program

A time program must be drawn up for the selected system

which first produces an impulse at remote lead 3 to start

sample changing on the 766 IC Sample Processor and then

switches the injection valve to the "Fill" position. A further im-

pulse is then produced to start filling the sample loop within

120 s. At the end the injection valve is switched to the "Inject"

position, which also starts data acquisition.

6 Run conditions

In order that the joint operation of 761 – 766 functions properly

the following conditions must be fulfilled:

The program must be started first on the 766 IC Sample

Processor, then the "Sample Queue" on 761 Compact IC.

Remote lead 3 on the Compact IC must be set to 0 at the

start of each determination (Set

System startup values

:

Remote line 3 = 0

).


2.10.3 Connection of other devices

Any external devices can be connected to the 25-pin remote interface

24 (see Fig. 2). The 8 output lines can be used to control these external

devices.

Before an external device is connected to the remote interface 24, the

761 Compact IC must always be switched off using mains switch 19 !

The pin assignment of the remote interface, its functions and the elec-

trical requirements and the conditions are described in section 6.1.

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