46 DECADE user manual, edition 9
Hold/busy
The hold/busy is a double function.
Input: when a time file is executed in the
slave mode
, the timer can be
stopped externally by connecting ‘HOLD’ and ‘COMMON’ as described
above (Fig. 14). The timer continues after disconnection.
Output: the ‘BUSY’ output is active (low) when during operation in the
master
or
slave mode
the DECADE is put on ‘hold’ by the drift monitor. The ‘HOLD’
command from the keyboard does not affect the status of the ‘BUSY’ output!
Overload
Activated when a recorder overload occurs.
Auto zero
Enables external activation of the auto zero command. This function is active
only when the ‘I-Cell’ is displayed.
To pos A, B
Forces the electrically actuated injector to position A (load) or B (inject).
Cell on (off)
Switches on (off) the flow cell. This input command can be used for example
to switch on and stabilise the flow cell early in the morning by means of a
timer.
Programming output functions
Four output functions can be programmed at each time. The notation of the
output ‘0000’ corresponds to the four output controls at the back panel of the
controller. These are from left to right: relay 2, relay 1, AUX2, AUX1 (Fig. 16).
For example, if AUX1 has to be activated, the output is set to ‘0001’. If a
contact closure has to be made using relay 1, the output is set to ‘0100’. The
contact is made between pin 3 and 5 at the 12 pins connector of the upper I/O
connector. At the same time the contact between 4 and 5 is interrupted. The
relay position indicated on the rear panel refers to the ‘0’ setting (see Fig. 16).
In
Table VII the output commands and the corresponding external contacts are
given. Combinations of commands enable control of multiple external
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