9/29/09 Using ID Setting Files 7-13
to +5 volt logic signal (input load impedance is 100K ohms).
The resulting logical state (high or low) will determine what
occurs inside the instrument as a function of this Logic
Input setting. Accordingly, the setting provides the
following five options:
None - The state of the logic input pin has no
effect.
Pause - Whenever the logic input is connected to
+5V (e.g. when a push-button switch makes con-
tact), the instrument pauses when in the run mode.
Toggle - Each time the logic input is connected to
+5V, (e.g. switch makes contact) the instrument
runs or stops. The effect is the same as pressing
the
s Run/Stop key.
Caution: The Level setting overrides
the RUN/STOP key and I/O Run/Stop
function commands.
Level - When the logic input is connected to +5V,
(e.g. switch makes contact) the instrument runs.
When the logic input is disconnected from +5V
(e.g. switch breaks contact), the instrument stops.
Alarm - When the logic input is connected to +5V
(e.g. switch makes contact), the instrument initi-
ates a dial-out sequence. This option is intended
for use only with advanced remote monitoring
applications where the instrument is paired with a
modem.
Logic Output Setting - (SSA,
LOG, ISM)
The Logic Output (2 outputs are available) selects the
functionality of the logic output pin on the control
connector (pin 2 referenced to ground, which is on pin 1)
and the heater output (pin 8, pulled to ground). You can use
these Logic Outputs to actuate external devices during
certain events or combinations of events that occur in the
instrument. The option you select determines which types of
events will trigger a logic output line.
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