Controls and connectors on instruments’ rear panel 1-15
Analog Inputs
Four analog input channels are available for acquiring simultaneous data,
such as a flame ionization detector output. The input differential voltage must
not exceed one volt.
See also: Figure titled “Analog Inputs, Contact Closure Inputs, and Contact
Closure Event Out outputs:” on page 1-14 and Acquiring analog data on
page 4-10.
Contact Closure Inputs
The In1 and In2 inputs allow an external device to start sample acquisition
once the device performed its function (typically sample injection).
Normally, the GC is connected to contact closure input In1. When the GC
makes an injection it sends a signal via this connection to start the GCT
Premier acquiring data.
See also: Figure titled “Analog Inputs, Contact Closure Inputs, and Contact
Closure Event Out outputs:” on page 1-14.
Contact Closure Event Out
Four Event Out connections, Out1 to Out4, allow various peripherals to be
connected to the system.
The Event Out selector switches the outputs, Out1 to Out4, between voltage
out and the contact closure. The voltage output of Out1 and Out2 is 5 V, the
voltage output of Out3 and Out4 is 24 V.
Warning: To avoid electric shock and damage to the instrument, do not
apply more than 16 V to any of the analog input connections.
Warning: To avoid electric shock and damage to the instrument, do not
apply more than 5 V to any of the contact closures inputs.
Warning: To avoid electric shock and damage to the instrument, do not
apply more than 24 V to any of the Event Out connections.
When the connections are configured as voltage outputs, do not apply
any load greater that 250 mA.
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